Quellcode-Bibliothek drm_connector.h
Sprache: C
/*
* Copyright ( c ) 2016 Intel Corporation
*
* Permission to use , copy , modify , distribute , and sell this software and its
* documentation for any purpose is hereby granted without fee , provided that
* the above copyright notice appear in all copies and that both that copyright
* notice and this permission notice appear in supporting documentation , and
* that the name of the copyright holders not be used in advertising or
* publicity pertaining to distribution of the software without specific ,
* written prior permission . The copyright holders make no representations
* about the suitability of this software for any purpose . It is provided " as
* is " without express or implied warranty .
*
* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE ,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS , IN NO
* EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL , INDIRECT OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE ,
* DATA OR PROFITS , WHETHER IN AN ACTION OF CONTRACT , NEGLIGENCE OR OTHER
* TORTIOUS ACTION , ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
* OF THIS SOFTWARE .
*/
#ifndef __DRM_CONNECTOR_H__
#define __DRM_CONNECTOR_H__
#include <linux/list.h>
#include <linux/llist.h>
#include <linux/ctype.h>
#include <linux/hdmi.h>
#include <linux/notifier.h>
#include <drm/drm_mode_object.h>
#include <drm/drm_util.h>
#include <drm/drm_property.h>
#include <uapi/drm/drm_mode.h>
struct drm_connector_helper_funcs;
struct drm_modeset_acquire_ctx;
struct drm_device;
struct drm_crtc;
struct drm_display_mode;
struct drm_encoder;
struct drm_panel;
struct drm_property;
struct drm_property_blob;
struct drm_printer;
struct drm_privacy_screen;
struct drm_edid;
struct edid;
struct hdmi_codec_daifmt;
struct hdmi_codec_params;
struct i2c_adapter;
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 */
};
/**
* enum drm_connector_status - status for a & drm_connector
*
* This enum is used to track the connector status . There are no separate
* # defines for the uapi !
*/
enum drm_connector_status {
/**
* @ connector_status_connected : The connector is definitely connected to
* a sink device , and can be enabled .
*/
connector_status_connected = 1 ,
/**
* @ connector_status_disconnected : The connector isn ' t connected to a
* sink device which can be autodetect . For digital outputs like DP or
* HDMI ( which can be realiable probed ) this means there ' s really
* nothing there . It is driver - dependent whether a connector with this
* status can be lit up or not .
*/
connector_status_disconnected = 2 ,
/**
* @ connector_status_unknown : The connector ' s status could not be
* reliably detected . This happens when probing would either cause
* flicker ( like load - detection when the connector is in use ) , or when a
* hardware resource isn ' t available ( like when load - detection needs a
* free CRTC ) . It should be possible to light up the connector with one
* of the listed fallback modes . For default configuration userspace
* should only try to light up connectors with unknown status when
* there ' s not connector with @ connector_status_connected .
*/
connector_status_unknown = 3 ,
};
/**
* enum drm_connector_registration_state - userspace registration status for
* a & drm_connector
*
* This enum is used to track the status of initializing a connector and
* registering it with userspace , so that DRM can prevent bogus modesets on
* connectors that no longer exist .
*/
enum drm_connector_registration_state {
/**
* @ DRM_CONNECTOR_INITIALIZING : The connector has just been created ,
* but has yet to be exposed to userspace . There should be no
* additional restrictions to how the state of this connector may be
* modified .
*/
DRM_CONNECTOR_INITIALIZING = 0 ,
/**
* @ DRM_CONNECTOR_REGISTERED : The connector has been fully initialized
* and registered with sysfs , as such it has been exposed to
* userspace . There should be no additional restrictions to how the
* state of this connector may be modified .
*/
DRM_CONNECTOR_REGISTERED = 1 ,
/**
* @ DRM_CONNECTOR_UNREGISTERED : The connector has either been exposed
* to userspace and has since been unregistered and removed from
* userspace , or the connector was unregistered before it had a chance
* to be exposed to userspace ( e . g . still in the
* @ DRM_CONNECTOR_INITIALIZING state ) . When a connector is
* unregistered , there are additional restrictions to how its state
* may be modified :
*
* - An unregistered connector may only have its DPMS changed from
* On - > Off . Once DPMS is changed to Off , it may not be switched back
* to On .
* - Modesets are not allowed on unregistered connectors , unless they
* would result in disabling its assigned CRTCs . This means
* disabling a CRTC on an unregistered connector is OK , but enabling
* one is not .
* - Removing a CRTC from an unregistered connector is OK , but new
* CRTCs may never be assigned to an unregistered connector .
*/
DRM_CONNECTOR_UNREGISTERED = 2 ,
};
enum subpixel_order {
SubPixelUnknown = 0 ,
SubPixelHorizontalRGB,
SubPixelHorizontalBGR,
SubPixelVerticalRGB,
SubPixelVerticalBGR,
SubPixelNone,
};
/**
* enum drm_connector_tv_mode - Analog TV output mode
*
* This enum is used to indicate the TV output mode used on an analog TV
* connector .
*
* WARNING : The values of this enum is uABI since they ' re exposed in the
* " TV mode " connector property .
*/
enum drm_connector_tv_mode {
/**
* @ DRM_MODE_TV_MODE_NTSC : CCIR System M ( aka 525 - lines )
* together with the NTSC Color Encoding .
*/
DRM_MODE_TV_MODE_NTSC,
/**
* @ DRM_MODE_TV_MODE_NTSC_443 : Variant of
* @ DRM_MODE_TV_MODE_NTSC . Uses a color subcarrier frequency
* of 4 . 43 MHz .
*/
DRM_MODE_TV_MODE_NTSC_443,
/**
* @ DRM_MODE_TV_MODE_NTSC_J : Variant of @ DRM_MODE_TV_MODE_NTSC
* used in Japan . Uses a black level equals to the blanking
* level .
*/
DRM_MODE_TV_MODE_NTSC_J,
/**
* @ DRM_MODE_TV_MODE_PAL : CCIR System B together with the PAL
* color system .
*/
DRM_MODE_TV_MODE_PAL,
/**
* @ DRM_MODE_TV_MODE_PAL_M : CCIR System M ( aka 525 - lines )
* together with the PAL color encoding
*/
DRM_MODE_TV_MODE_PAL_M,
/**
* @ DRM_MODE_TV_MODE_PAL_N : CCIR System N together with the PAL
* color encoding . It uses 625 lines , but has a color subcarrier
* frequency of 3 . 58 MHz , the SECAM color space , and narrower
* channels compared to most of the other PAL variants .
*/
DRM_MODE_TV_MODE_PAL_N,
/**
* @ DRM_MODE_TV_MODE_SECAM : CCIR System B together with the
* SECAM color system .
*/
DRM_MODE_TV_MODE_SECAM,
/**
* @ DRM_MODE_TV_MODE_MONOCHROME : Use timings appropriate to
* the DRM mode , including equalizing pulses for a 525 - line
* or 625 - line mode , with no pedestal or color encoding .
*/
DRM_MODE_TV_MODE_MONOCHROME,
/**
* @ DRM_MODE_TV_MODE_MAX : Number of analog TV output modes .
*
* Internal implementation detail ; this is not uABI .
*/
DRM_MODE_TV_MODE_MAX,
};
/**
* struct drm_scrambling : sink ' s scrambling support .
*/
struct drm_scrambling {
/**
* @ supported : scrambling supported for rates > 340 Mhz .
*/
bool supported;
/**
* @ low_rates : scrambling supported for rates < = 340 Mhz .
*/
bool low_rates;
};
/*
* struct drm_scdc - Information about scdc capabilities of a HDMI 2 . 0 sink
*
* Provides SCDC register support and capabilities related information on a
* HDMI 2 . 0 sink . In case of a HDMI 1 . 4 sink , all parameter must be 0 .
*/
struct drm_scdc {
/**
* @ supported : status control & data channel present .
*/
bool supported;
/**
* @ read_request : sink is capable of generating scdc read request .
*/
bool read_request;
/**
* @ scrambling : sink ' s scrambling capabilities
*/
struct drm_scrambling scrambling;
};
/**
* struct drm_hdmi_dsc_cap - DSC capabilities of HDMI sink
*
* Describes the DSC support provided by HDMI 2 . 1 sink .
* The information is fetched fom additional HFVSDB blocks defined
* for HDMI 2 . 1 .
*/
struct drm_hdmi_dsc_cap {
/** @v_1p2: flag for dsc1.2 version support by sink */
bool v_1p2;
/** @native_420: Does sink support DSC with 4:2:0 compression */
bool native_420;
/**
* @ all_bpp : Does sink support all bpp with 4 : 4 : 4 : or 4 : 2 : 2
* compressed formats
*/
bool all_bpp;
/**
* @ bpc_supported : compressed bpc supported by sink : 10 , 12 or 16 bpc
*/
u8 bpc_supported;
/** @max_slices: maximum number of Horizontal slices supported by */
u8 max_slices;
/** @clk_per_slice : max pixel clock in MHz supported per slice */
int clk_per_slice;
/** @max_lanes : dsc max lanes supported for Fixed rate Link training */
u8 max_lanes;
/** @max_frl_rate_per_lane : maximum frl rate with DSC per lane */
u8 max_frl_rate_per_lane;
/** @total_chunk_kbytes: max size of chunks in KBs supported per line*/
u8 total_chunk_kbytes;
};
/**
* struct drm_hdmi_info - runtime information about the connected HDMI sink
*
* Describes if a given display supports advanced HDMI 2 . 0 features .
* This information is available in CEA - 861 - F extension blocks ( like HF - VSDB ) .
*/
struct drm_hdmi_info {
/** @scdc: sink's scdc support and capabilities */
struct drm_scdc scdc;
/**
* @ y420_vdb_modes : bitmap of modes which can support ycbcr420
* output only ( not normal RGB / YCBCR444 / 422 outputs ) . The max VIC
* defined by the CEA - 861 - G spec is 219 , so the size is 256 bits to map
* up to 256 VICs .
*/
unsigned long y420_vdb_modes[BITS_TO_LONGS(256 )];
/**
* @ y420_cmdb_modes : bitmap of modes which can support ycbcr420
* output also , along with normal HDMI outputs . The max VIC defined by
* the CEA - 861 - G spec is 219 , so the size is 256 bits to map up to 256
* VICs .
*/
unsigned long y420_cmdb_modes[BITS_TO_LONGS(256 )];
/** @y420_dc_modes: bitmap of deep color support index */
u8 y420_dc_modes;
/** @max_frl_rate_per_lane: support fixed rate link */
u8 max_frl_rate_per_lane;
/** @max_lanes: supported by sink */
u8 max_lanes;
/** @dsc_cap: DSC capabilities of the sink */
struct drm_hdmi_dsc_cap dsc_cap;
};
/**
* enum drm_link_status - connector ' s link_status property value
*
* This enum is used as the connector ' s link status property value .
* It is set to the values defined in uapi .
*
* @ DRM_LINK_STATUS_GOOD : DP Link is Good as a result of successful
* link training
* @ DRM_LINK_STATUS_BAD : DP Link is BAD as a result of link training
* failure
*/
enum drm_link_status {
DRM_LINK_STATUS_GOOD = DRM_MODE_LINK_STATUS_GOOD,
DRM_LINK_STATUS_BAD = DRM_MODE_LINK_STATUS_BAD,
};
/**
* enum drm_panel_orientation - panel_orientation info for & drm_display_info
*
* This enum is used to track the ( LCD ) panel orientation . There are no
* separate # defines for the uapi !
*
* @ DRM_MODE_PANEL_ORIENTATION_UNKNOWN : The drm driver has not provided any
* panel orientation information ( normal
* for non panels ) in this case the " panel
* orientation " connector prop will not be
* attached .
* @ DRM_MODE_PANEL_ORIENTATION_NORMAL : The top side of the panel matches the
* top side of the device ' s casing .
* @ DRM_MODE_PANEL_ORIENTATION_BOTTOM_UP : The top side of the panel matches the
* bottom side of the device ' s casing , iow
* the panel is mounted upside - down .
* @ DRM_MODE_PANEL_ORIENTATION_LEFT_UP : The left side of the panel matches the
* top side of the device ' s casing .
* @ DRM_MODE_PANEL_ORIENTATION_RIGHT_UP : The right side of the panel matches the
* top side of the device ' s casing .
*/
enum drm_panel_orientation {
DRM_MODE_PANEL_ORIENTATION_UNKNOWN = -1 ,
DRM_MODE_PANEL_ORIENTATION_NORMAL = 0 ,
DRM_MODE_PANEL_ORIENTATION_BOTTOM_UP,
DRM_MODE_PANEL_ORIENTATION_LEFT_UP,
DRM_MODE_PANEL_ORIENTATION_RIGHT_UP,
};
/**
* enum drm_hdmi_broadcast_rgb - Broadcast RGB Selection for an HDMI @ drm_connector
*/
enum drm_hdmi_broadcast_rgb {
/**
* @ DRM_HDMI_BROADCAST_RGB_AUTO : The RGB range is selected
* automatically based on the mode .
*/
DRM_HDMI_BROADCAST_RGB_AUTO,
/**
* @ DRM_HDMI_BROADCAST_RGB_FULL : Full range RGB is forced .
*/
DRM_HDMI_BROADCAST_RGB_FULL,
/**
* @ DRM_HDMI_BROADCAST_RGB_LIMITED : Limited range RGB is forced .
*/
DRM_HDMI_BROADCAST_RGB_LIMITED,
};
const char *
drm_hdmi_connector_get_broadcast_rgb_name(enum drm_hdmi_broadcast_rgb broadcast_rgb);
const char *
drm_hdmi_connector_get_output_format_name(enum hdmi_colorspace fmt);
/**
* struct drm_monitor_range_info - Panel ' s Monitor range in EDID for
* & drm_display_info
*
* This struct is used to store a frequency range supported by panel
* as parsed from EDID ' s detailed monitor range descriptor block .
*
* @ min_vfreq : This is the min supported refresh rate in Hz from
* EDID ' s detailed monitor range .
* @ max_vfreq : This is the max supported refresh rate in Hz from
* EDID ' s detailed monitor range
*/
struct drm_monitor_range_info {
u16 min_vfreq;
u16 max_vfreq;
};
/**
* struct drm_luminance_range_info - Panel ' s luminance range for
* & drm_display_info . Calculated using data in EDID
*
* This struct is used to store a luminance range supported by panel
* as calculated using data from EDID ' s static hdr metadata .
*
* @ min_luminance : This is the min supported luminance value
*
* @ max_luminance : This is the max supported luminance value
*/
struct drm_luminance_range_info {
u32 min_luminance;
u32 max_luminance;
};
/**
* enum drm_privacy_screen_status - privacy screen status
*
* This enum is used to track and control the state of the integrated privacy
* screen present on some display panels , via the " privacy - screen sw - state "
* and " privacy - screen hw - state " properties . Note the _ LOCKED enum values
* are only valid for the " privacy - screen hw - state " property .
*
* @ PRIVACY_SCREEN_DISABLED :
* The privacy - screen on the panel is disabled
* @ PRIVACY_SCREEN_ENABLED :
* The privacy - screen on the panel is enabled
* @ PRIVACY_SCREEN_DISABLED_LOCKED :
* The privacy - screen on the panel is disabled and locked ( cannot be changed )
* @ PRIVACY_SCREEN_ENABLED_LOCKED :
* The privacy - screen on the panel is enabled and locked ( cannot be changed )
*/
enum drm_privacy_screen_status {
PRIVACY_SCREEN_DISABLED = 0 ,
PRIVACY_SCREEN_ENABLED,
PRIVACY_SCREEN_DISABLED_LOCKED,
PRIVACY_SCREEN_ENABLED_LOCKED,
};
/**
* enum drm_colorspace - color space
*
* This enum is a consolidated colorimetry list supported by HDMI and
* DP protocol standard . The respective connectors will register
* a property with the subset of this list ( supported by that
* respective protocol ) . Userspace will set the colorspace through
* a colorspace property which will be created and exposed to
* userspace .
*
* DP definitions come from the DP v2 . 0 spec
* HDMI definitions come from the CTA - 861 - H spec
*
* @ DRM_MODE_COLORIMETRY_DEFAULT :
* Driver specific behavior .
* @ DRM_MODE_COLORIMETRY_NO_DATA :
* Driver specific behavior .
* @ DRM_MODE_COLORIMETRY_SMPTE_170M_YCC :
* ( HDMI )
* SMPTE ST 170 M colorimetry format
* @ DRM_MODE_COLORIMETRY_BT709_YCC :
* ( HDMI , DP )
* ITU - R BT . 709 colorimetry format
* @ DRM_MODE_COLORIMETRY_XVYCC_601 :
* ( HDMI , DP )
* xvYCC601 colorimetry format
* @ DRM_MODE_COLORIMETRY_XVYCC_709 :
* ( HDMI , DP )
* xvYCC709 colorimetry format
* @ DRM_MODE_COLORIMETRY_SYCC_601 :
* ( HDMI , DP )
* sYCC601 colorimetry format
* @ DRM_MODE_COLORIMETRY_OPYCC_601 :
* ( HDMI , DP )
* opYCC601 colorimetry format
* @ DRM_MODE_COLORIMETRY_OPRGB :
* ( HDMI , DP )
* opRGB colorimetry format
* @ DRM_MODE_COLORIMETRY_BT2020_CYCC :
* ( HDMI , DP )
* ITU - R BT . 2020 Y ' c C ' bc C ' rc ( constant luminance ) colorimetry format
* @ DRM_MODE_COLORIMETRY_BT2020_RGB :
* ( HDMI , DP )
* ITU - R BT . 2020 R ' G ' B ' colorimetry format
* @ DRM_MODE_COLORIMETRY_BT2020_YCC :
* ( HDMI , DP )
* ITU - R BT . 2020 Y ' C ' b C ' r colorimetry format
* @ DRM_MODE_COLORIMETRY_DCI_P3_RGB_D65 :
* ( HDMI )
* SMPTE ST 2113 P3D65 colorimetry format
* @ DRM_MODE_COLORIMETRY_DCI_P3_RGB_THEATER :
* ( HDMI )
* SMPTE ST 2113 P3DCI colorimetry format
* @ DRM_MODE_COLORIMETRY_RGB_WIDE_FIXED :
* ( DP )
* RGB wide gamut fixed point colorimetry format
* @ DRM_MODE_COLORIMETRY_RGB_WIDE_FLOAT :
* ( DP )
* RGB wide gamut floating point
* ( scRGB ( IEC 61966 - 2 - 2 ) ) colorimetry format
* @ DRM_MODE_COLORIMETRY_BT601_YCC :
* ( DP )
* ITU - R BT . 601 colorimetry format
* The DP spec does not say whether this is the 525 or the 625
* line version .
* @ DRM_MODE_COLORIMETRY_COUNT :
* Not a valid value ; merely used four counting
*/
enum drm_colorspace {
/* For Default case, driver will set the colorspace */
DRM_MODE_COLORIMETRY_DEFAULT = 0 ,
/* CEA 861 Normal Colorimetry options */
DRM_MODE_COLORIMETRY_NO_DATA = 0 ,
DRM_MODE_COLORIMETRY_SMPTE_170M_YCC = 1 ,
DRM_MODE_COLORIMETRY_BT709_YCC = 2 ,
/* CEA 861 Extended Colorimetry Options */
DRM_MODE_COLORIMETRY_XVYCC_601 = 3 ,
DRM_MODE_COLORIMETRY_XVYCC_709 = 4 ,
DRM_MODE_COLORIMETRY_SYCC_601 = 5 ,
DRM_MODE_COLORIMETRY_OPYCC_601 = 6 ,
DRM_MODE_COLORIMETRY_OPRGB = 7 ,
DRM_MODE_COLORIMETRY_BT2020_CYCC = 8 ,
DRM_MODE_COLORIMETRY_BT2020_RGB = 9 ,
DRM_MODE_COLORIMETRY_BT2020_YCC = 10 ,
/* Additional Colorimetry extension added as part of CTA 861.G */
DRM_MODE_COLORIMETRY_DCI_P3_RGB_D65 = 11 ,
DRM_MODE_COLORIMETRY_DCI_P3_RGB_THEATER = 12 ,
/* Additional Colorimetry Options added for DP 1.4a VSC Colorimetry Format */
DRM_MODE_COLORIMETRY_RGB_WIDE_FIXED = 13 ,
DRM_MODE_COLORIMETRY_RGB_WIDE_FLOAT = 14 ,
DRM_MODE_COLORIMETRY_BT601_YCC = 15 ,
DRM_MODE_COLORIMETRY_COUNT
};
/**
* enum drm_bus_flags - bus_flags info for & drm_display_info
*
* This enum defines signal polarities and clock edge information for signals on
* a bus as bitmask flags .
*
* The clock edge information is conveyed by two sets of symbols ,
* DRM_BUS_FLAGS_ * _ DRIVE_ \ * and DRM_BUS_FLAGS_ * _ SAMPLE_ \ * . When this enum is
* used to describe a bus from the point of view of the transmitter , the
* \ * _ DRIVE_ \ * flags should be used . When used from the point of view of the
* receiver , the \ * _ SAMPLE_ \ * flags should be used . The \ * _ DRIVE_ \ * and
* \ * _ SAMPLE_ \ * flags alias each other , with the \ * _ SAMPLE_POSEDGE and
* \ * _ SAMPLE_NEGEDGE flags being equal to \ * _ DRIVE_NEGEDGE and \ * _ DRIVE_POSEDGE
* respectively . This simplifies code as signals are usually sampled on the
* opposite edge of the driving edge . Transmitters and receivers may however
* need to take other signal timings into account to convert between driving
* and sample edges .
*/
enum drm_bus_flags {
/**
* @ DRM_BUS_FLAG_DE_LOW :
*
* The Data Enable signal is active low
*/
DRM_BUS_FLAG_DE_LOW = BIT(0 ),
/**
* @ DRM_BUS_FLAG_DE_HIGH :
*
* The Data Enable signal is active high
*/
DRM_BUS_FLAG_DE_HIGH = BIT(1 ),
/**
* @ DRM_BUS_FLAG_PIXDATA_DRIVE_POSEDGE :
*
* Data is driven on the rising edge of the pixel clock
*/
DRM_BUS_FLAG_PIXDATA_DRIVE_POSEDGE = BIT(2 ),
/**
* @ DRM_BUS_FLAG_PIXDATA_DRIVE_NEGEDGE :
*
* Data is driven on the falling edge of the pixel clock
*/
DRM_BUS_FLAG_PIXDATA_DRIVE_NEGEDGE = BIT(3 ),
/**
* @ DRM_BUS_FLAG_PIXDATA_SAMPLE_POSEDGE :
*
* Data is sampled on the rising edge of the pixel clock
*/
DRM_BUS_FLAG_PIXDATA_SAMPLE_POSEDGE = DRM_BUS_FLAG_PIXDATA_DRIVE_NEGEDGE,
/**
* @ DRM_BUS_FLAG_PIXDATA_SAMPLE_NEGEDGE :
*
* Data is sampled on the falling edge of the pixel clock
*/
DRM_BUS_FLAG_PIXDATA_SAMPLE_NEGEDGE = DRM_BUS_FLAG_PIXDATA_DRIVE_POSEDGE,
/**
* @ DRM_BUS_FLAG_DATA_MSB_TO_LSB :
*
* Data is transmitted MSB to LSB on the bus
*/
DRM_BUS_FLAG_DATA_MSB_TO_LSB = BIT(4 ),
/**
* @ DRM_BUS_FLAG_DATA_LSB_TO_MSB :
*
* Data is transmitted LSB to MSB on the bus
*/
DRM_BUS_FLAG_DATA_LSB_TO_MSB = BIT(5 ),
/**
* @ DRM_BUS_FLAG_SYNC_DRIVE_POSEDGE :
*
* Sync signals are driven on the rising edge of the pixel clock
*/
DRM_BUS_FLAG_SYNC_DRIVE_POSEDGE = BIT(6 ),
/**
* @ DRM_BUS_FLAG_SYNC_DRIVE_NEGEDGE :
*
* Sync signals are driven on the falling edge of the pixel clock
*/
DRM_BUS_FLAG_SYNC_DRIVE_NEGEDGE = BIT(7 ),
/**
* @ DRM_BUS_FLAG_SYNC_SAMPLE_POSEDGE :
*
* Sync signals are sampled on the rising edge of the pixel clock
*/
DRM_BUS_FLAG_SYNC_SAMPLE_POSEDGE = DRM_BUS_FLAG_SYNC_DRIVE_NEGEDGE,
/**
* @ DRM_BUS_FLAG_SYNC_SAMPLE_NEGEDGE :
*
* Sync signals are sampled on the falling edge of the pixel clock
*/
DRM_BUS_FLAG_SYNC_SAMPLE_NEGEDGE = DRM_BUS_FLAG_SYNC_DRIVE_POSEDGE,
/**
* @ DRM_BUS_FLAG_SHARP_SIGNALS :
*
* Set if the Sharp - specific signals ( SPL , CLS , PS , REV ) must be used
*/
DRM_BUS_FLAG_SHARP_SIGNALS = BIT(8 ),
};
/**
* struct drm_display_info - runtime data about the connected sink
*
* Describes a given display ( e . g . CRT or flat panel ) and its limitations . For
* fixed display sinks like built - in panels there ' s not much difference between
* this and & struct drm_connector . But for sinks with a real cable this
* structure is meant to describe all the things at the other end of the cable .
*
* For sinks which provide an EDID this can be filled out by calling
* drm_add_edid_modes ( ) .
*/
struct drm_display_info {
/**
* @ width_mm : Physical width in mm .
*/
unsigned int width_mm;
/**
* @ height_mm : Physical height in mm .
*/
unsigned int height_mm;
/**
* @ bpc : Maximum bits per color channel . Used by HDMI and DP outputs .
*/
unsigned int bpc;
/**
* @ subpixel_order : Subpixel order of LCD panels .
*/
enum subpixel_order subpixel_order;
#define DRM_COLOR_FORMAT_RGB444 (1 <<0 )
#define DRM_COLOR_FORMAT_YCBCR444 (1 <<1 )
#define DRM_COLOR_FORMAT_YCBCR422 (1 <<2 )
#define DRM_COLOR_FORMAT_YCBCR420 (1 <<3 )
/**
* @ panel_orientation : Read only connector property for built - in panels ,
* indicating the orientation of the panel vs the device ' s casing .
* drm_connector_init ( ) sets this to DRM_MODE_PANEL_ORIENTATION_UNKNOWN .
* When not UNKNOWN this gets used by the drm_fb_helpers to rotate the
* fb to compensate and gets exported as prop to userspace .
*/
int panel_orientation;
/**
* @ color_formats : HDMI Color formats , selects between RGB and YCrCb
* modes . Used DRM_COLOR_FORMAT \ _ defines , which are _ not_ the same ones
* as used to describe the pixel format in framebuffers , and also don ' t
* match the formats in @ bus_formats which are shared with v4l .
*/
u32 color_formats;
/**
* @ bus_formats : Pixel data format on the wire , somewhat redundant with
* @ color_formats . Array of size @ num_bus_formats encoded using
* MEDIA_BUS_FMT \ _ defines shared with v4l and media drivers .
*/
const u32 *bus_formats;
/**
* @ num_bus_formats : Size of @ bus_formats array .
*/
unsigned int num_bus_formats;
/**
* @ bus_flags : Additional information ( like pixel signal polarity ) for
* the pixel data on the bus , using & enum drm_bus_flags values
* DRM_BUS_FLAGS \ _ .
*/
u32 bus_flags;
/**
* @ max_tmds_clock : Maximum TMDS clock rate supported by the
* sink in kHz . 0 means undefined .
*/
int max_tmds_clock;
/**
* @ dvi_dual : Dual - link DVI sink ?
*/
bool dvi_dual;
/**
* @ is_hdmi : True if the sink is an HDMI device .
*
* This field shall be used instead of calling
* drm_detect_hdmi_monitor ( ) when possible .
*/
bool is_hdmi;
/**
* @ has_audio : True if the sink supports audio .
*
* This field shall be used instead of calling
* drm_detect_monitor_audio ( ) when possible .
*/
bool has_audio;
/**
* @ has_hdmi_infoframe : Does the sink support the HDMI infoframe ?
*/
bool has_hdmi_infoframe;
/**
* @ rgb_quant_range_selectable : Does the sink support selecting
* the RGB quantization range ?
*/
bool rgb_quant_range_selectable;
/**
* @ edid_hdmi_rgb444_dc_modes : Mask of supported hdmi deep color modes
* in RGB 4 : 4 : 4 . Even more stuff redundant with @ bus_formats .
*/
u8 edid_hdmi_rgb444_dc_modes;
/**
* @ edid_hdmi_ycbcr444_dc_modes : Mask of supported hdmi deep color
* modes in YCbCr 4 : 4 : 4 . Even more stuff redundant with @ bus_formats .
*/
u8 edid_hdmi_ycbcr444_dc_modes;
/**
* @ cea_rev : CEA revision of the HDMI sink .
*/
u8 cea_rev;
/**
* @ hdmi : advance features of a HDMI sink .
*/
struct drm_hdmi_info hdmi;
/**
* @ hdr_sink_metadata : HDR Metadata Information read from sink
*/
struct hdr_sink_metadata hdr_sink_metadata;
/**
* @ non_desktop : Non desktop display ( HMD ) .
*/
bool non_desktop;
/**
* @ monitor_range : Frequency range supported by monitor range descriptor
*/
struct drm_monitor_range_info monitor_range;
/**
* @ luminance_range : Luminance range supported by panel
*/
struct drm_luminance_range_info luminance_range;
/**
* @ mso_stream_count : eDP Multi - SST Operation ( MSO ) stream count from
* the DisplayID VESA vendor block . 0 for conventional Single - Stream
* Transport ( SST ) , or 2 or 4 MSO streams .
*/
u8 mso_stream_count;
/**
* @ mso_pixel_overlap : eDP MSO segment pixel overlap , 0 - 8 pixels .
*/
u8 mso_pixel_overlap;
/**
* @ max_dsc_bpp : Maximum DSC target bitrate , if it is set to 0 the
* monitor ' s default value is used instead .
*/
u32 max_dsc_bpp;
/**
* @ vics : Array of vics_len VICs . Internal to EDID parsing .
*/
u8 *vics;
/**
* @ vics_len : Number of elements in vics . Internal to EDID parsing .
*/
int vics_len;
/**
* @ quirks : EDID based quirks . DRM core and drivers can query the
* @ drm_edid_quirk quirks using drm_edid_has_quirk ( ) , the rest of
* the quirks also tracked here are internal to EDID parsing .
*/
u32 quirks;
/**
* @ source_physical_address : Source Physical Address from HDMI
* Vendor - Specific Data Block , for CEC usage .
*
* Defaults to CEC_PHYS_ADDR_INVALID ( 0 xffff ) .
*/
u16 source_physical_address;
};
int drm_display_info_set_bus_formats(struct drm_display_info *info,
const u32 *formats,
unsigned int num_formats);
/**
* struct drm_connector_tv_margins - TV connector related margins
*
* Describes the margins in pixels to put around the image on TV
* connectors to deal with overscan .
*/
struct drm_connector_tv_margins {
/**
* @ bottom : Bottom margin in pixels .
*/
unsigned int bottom;
/**
* @ left : Left margin in pixels .
*/
unsigned int left;
/**
* @ right : Right margin in pixels .
*/
unsigned int right;
/**
* @ top : Top margin in pixels .
*/
unsigned int top;
};
/**
* struct drm_tv_connector_state - TV connector related states
* @ select_subconnector : selected subconnector
* @ subconnector : detected subconnector
* @ margins : TV margins
* @ legacy_mode : Legacy TV mode , driver specific value
* @ mode : TV mode
* @ brightness : brightness in percent
* @ contrast : contrast in percent
* @ flicker_reduction : flicker reduction in percent
* @ overscan : overscan in percent
* @ saturation : saturation in percent
* @ hue : hue in percent
*/
struct drm_tv_connector_state {
enum drm_mode_subconnector select_subconnector;
enum drm_mode_subconnector subconnector;
struct drm_connector_tv_margins margins;
unsigned int legacy_mode;
unsigned int mode;
unsigned int brightness;
unsigned int contrast;
unsigned int flicker_reduction;
unsigned int overscan;
unsigned int saturation;
unsigned int hue;
};
/**
* struct drm_connector_hdmi_infoframe - HDMI Infoframe container
*/
struct drm_connector_hdmi_infoframe {
/**
* @ data : HDMI Infoframe structure
*/
union hdmi_infoframe data;
/**
* @ set : Is the content of @ data valid ?
*/
bool set;
};
/*
* struct drm_connector_hdmi_state - HDMI state container
*/
struct drm_connector_hdmi_state {
/**
* @ broadcast_rgb : Connector property to pass the
* Broadcast RGB selection value .
*/
enum drm_hdmi_broadcast_rgb broadcast_rgb;
/**
* @ infoframes : HDMI Infoframes matching that state
*/
struct {
/**
* @ avi : AVI Infoframes structure matching our
* state .
*/
struct drm_connector_hdmi_infoframe avi;
/**
* @ hdr_drm : DRM ( Dynamic Range and Mastering )
* Infoframes structure matching our state .
*/
struct drm_connector_hdmi_infoframe hdr_drm;
/**
* @ spd : SPD Infoframes structure matching our
* state .
*/
struct drm_connector_hdmi_infoframe spd;
/**
* @ vendor : HDMI Vendor Infoframes structure
* matching our state .
*/
struct drm_connector_hdmi_infoframe hdmi;
} infoframes;
/**
* @ is_limited_range : Is the output supposed to use a limited
* RGB Quantization Range or not ?
*/
bool is_limited_range;
/**
* @ output_bpc : Bits per color channel to output .
*/
unsigned int output_bpc;
/**
* @ output_format : Pixel format to output in .
*/
enum hdmi_colorspace output_format;
/**
* @ tmds_char_rate : TMDS Character Rate , in Hz .
*/
unsigned long long tmds_char_rate;
};
/**
* struct drm_connector_state - mutable connector state
*/
struct drm_connector_state {
/** @connector: backpointer to the connector */
struct drm_connector *connector;
/**
* @ crtc : CRTC to connect connector to , NULL if disabled .
*
* Do not change this directly , use drm_atomic_set_crtc_for_connector ( )
* instead .
*/
struct drm_crtc *crtc;
/**
* @ best_encoder :
*
* Used by the atomic helpers to select the encoder , through the
* & drm_connector_helper_funcs . atomic_best_encoder or
* & drm_connector_helper_funcs . best_encoder callbacks .
*
* This is also used in the atomic helpers to map encoders to their
* current and previous connectors , see
* drm_atomic_get_old_connector_for_encoder ( ) and
* drm_atomic_get_new_connector_for_encoder ( ) .
*
* NOTE : Atomic drivers must fill this out ( either themselves or through
* helpers ) , for otherwise the GETCONNECTOR and GETENCODER IOCTLs will
* not return correct data to userspace .
*/
struct drm_encoder *best_encoder;
/**
* @ link_status : Connector link_status to keep track of whether link is
* GOOD or BAD to notify userspace if retraining is necessary .
*/
enum drm_link_status link_status;
/** @state: backpointer to global drm_atomic_state */
struct drm_atomic_state *state;
/**
* @ commit : Tracks the pending commit to prevent use - after - free conditions .
*
* Is only set when @ crtc is NULL .
*/
struct drm_crtc_commit *commit;
/** @tv: TV connector state */
struct drm_tv_connector_state tv;
/**
* @ self_refresh_aware :
*
* This tracks whether a connector is aware of the self refresh state .
* It should be set to true for those connector implementations which
* understand the self refresh state . This is needed since the crtc
* registers the self refresh helpers and it doesn ' t know if the
* connectors downstream have implemented self refresh entry / exit .
*
* Drivers should set this to true in atomic_check if they know how to
* handle self_refresh requests .
*/
bool self_refresh_aware;
/**
* @ picture_aspect_ratio : Connector property to control the
* HDMI infoframe aspect ratio setting .
*
* The % DRM_MODE_PICTURE_ASPECT_ \ * values much match the
* values for & enum hdmi_picture_aspect
*/
enum hdmi_picture_aspect picture_aspect_ratio;
/**
* @ content_type : Connector property to control the
* HDMI infoframe content type setting .
* The % DRM_MODE_CONTENT_TYPE_ \ * values much
* match the values .
*/
unsigned int content_type;
/**
* @ hdcp_content_type : Connector property to pass the type of
* protected content . This is most commonly used for HDCP .
*/
unsigned int hdcp_content_type;
/**
* @ scaling_mode : Connector property to control the
* upscaling , mostly used for built - in panels .
*/
unsigned int scaling_mode;
/**
* @ content_protection : Connector property to request content
* protection . This is most commonly used for HDCP .
*/
unsigned int content_protection;
/**
* @ colorspace : State variable for Connector property to request
* colorspace change on Sink . This is most commonly used to switch
* to wider color gamuts like BT2020 .
*/
enum drm_colorspace colorspace;
/**
* @ writeback_job : Writeback job for writeback connectors
*
* Holds the framebuffer and out - fence for a writeback connector . As
* the writeback completion may be asynchronous to the normal commit
* cycle , the writeback job lifetime is managed separately from the
* normal atomic state by this object .
*
* See also : drm_writeback_queue_job ( ) and
* drm_writeback_signal_completion ( )
*/
struct drm_writeback_job *writeback_job;
/**
* @ max_requested_bpc : Connector property to limit the maximum bit
* depth of the pixels .
*/
u8 max_requested_bpc;
/**
* @ max_bpc : Connector max_bpc based on the requested max_bpc property
* and the connector bpc limitations obtained from edid .
*/
u8 max_bpc;
/**
* @ privacy_screen_sw_state : See : ref : ` Standard Connector
* Properties < standard_connector_properties > `
*/
enum drm_privacy_screen_status privacy_screen_sw_state;
/**
* @ hdr_output_metadata :
* DRM blob property for HDR output metadata
*/
struct drm_property_blob *hdr_output_metadata;
/**
* @ hdmi : HDMI - related variable and properties . Filled by
* @ drm_atomic_helper_connector_hdmi_check ( ) .
*/
struct drm_connector_hdmi_state hdmi;
};
struct drm_connector_hdmi_audio_funcs {
/**
* @ startup :
*
* Called when ASoC starts an audio stream setup . The
* @ startup ( ) is optional .
*
* Returns :
* 0 on success , a negative error code otherwise
*/
int (*startup)(struct drm_connector *connector);
/**
* @ prepare :
* Configures HDMI - encoder for audio stream . Can be called
* multiple times for each setup . Mandatory .
*
* Returns :
* 0 on success , a negative error code otherwise
*/
int (*prepare)(struct drm_connector *connector,
struct hdmi_codec_daifmt *fmt,
struct hdmi_codec_params *hparms);
/**
* @ shutdown :
*
* Shut down the audio stream . Mandatory .
*
* Returns :
* 0 on success , a negative error code otherwise
*/
void (*shutdown)(struct drm_connector *connector);
/**
* @ mute_stream :
*
* Mute / unmute HDMI audio stream . The @ mute_stream callback is
* optional .
*
* Returns :
* 0 on success , a negative error code otherwise
*/
int (*mute_stream)(struct drm_connector *connector,
bool enable, int direction);
};
void drm_connector_cec_phys_addr_invalidate(struct drm_connector *connector);
void drm_connector_cec_phys_addr_set(struct drm_connector *connector);
/**
* struct drm_connector_cec_funcs - drm_hdmi_connector control functions
*/
struct drm_connector_cec_funcs {
/**
* @ phys_addr_invalidate : mark CEC physical address as invalid
*
* The callback to mark CEC physical address as invalid , abstracting
* the operation .
*/
void (*phys_addr_invalidate)(struct drm_connector *connector);
/**
* @ phys_addr_set : set CEC physical address
*
* The callback to set CEC physical address , abstracting the operation .
*/
void (*phys_addr_set)(struct drm_connector *connector, u16 addr);
};
/**
* struct drm_connector_hdmi_funcs - drm_hdmi_connector control functions
*/
struct drm_connector_hdmi_funcs {
/**
* @ tmds_char_rate_valid :
*
* This callback is invoked at atomic_check time to figure out
* whether a particular TMDS character rate is supported by the
* driver .
*
* The @ tmds_char_rate_valid callback is optional .
*
* Returns :
*
* Either & drm_mode_status . MODE_OK or one of the failure reasons
* in & enum drm_mode_status .
*/
enum drm_mode_status
(*tmds_char_rate_valid)(const struct drm_connector *connector,
const struct drm_display_mode *mode,
unsigned long long tmds_rate);
/**
* @ clear_infoframe :
*
* This callback is invoked through
* @ drm_atomic_helper_connector_hdmi_update_infoframes during a
* commit to clear the infoframes into the hardware . It will be
* called multiple times , once for every disabled infoframe
* type .
*
* The @ clear_infoframe callback is optional .
*
* Returns :
* 0 on success , a negative error code otherwise
*/
int (*clear_infoframe)(struct drm_connector *connector,
enum hdmi_infoframe_type type);
/**
* @ write_infoframe :
*
* This callback is invoked through
* @ drm_atomic_helper_connector_hdmi_update_infoframes during a
* commit to program the infoframes into the hardware . It will
* be called multiple times , once for every updated infoframe
* type .
*
* The @ write_infoframe callback is mandatory .
*
* Returns :
* 0 on success , a negative error code otherwise
*/
int (*write_infoframe)(struct drm_connector *connector,
enum hdmi_infoframe_type type,
const u8 *buffer, size_t len);
/**
* @ read_edid :
*
* This callback is used by the framework as a replacement for reading
* the EDID from connector - > ddc . It is still recommended to provide
* connector - > ddc instead of implementing this callback . Returned EDID
* should be freed via the drm_edid_free ( ) .
*
* The @ read_edid callback is optional .
*
* Returns :
* Valid EDID on success , NULL in case of failure .
*/
const struct drm_edid *(*read_edid)(struct drm_connector *connector);
};
/**
* struct drm_connector_funcs - control connectors on a given device
*
* 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 {
/**
* @ dpms :
*
* Legacy entry point to set the per - connector DPMS state . Legacy DPMS
* is exposed as a standard property on the connector , but diverted to
* this callback in the drm core . Note that atomic drivers don ' t
* implement the 4 level DPMS support on the connector any more , but
* instead only have an on / off " ACTIVE " property on the CRTC object .
*
* This hook is not used by atomic drivers , remapping of the legacy DPMS
* property is entirely handled in the DRM core .
*
* RETURNS :
*
* 0 on success or a negative error code on failure .
*/
int (*dpms)(struct drm_connector *connector, int mode);
/**
* @ reset :
*
* Reset connector hardware and software state to off . This function isn ' t
* called by the core directly , only through drm_mode_config_reset ( ) .
* It ' s not a helper hook only for historical reasons .
*
* Atomic drivers can use drm_atomic_helper_connector_reset ( ) to reset
* atomic state using this hook .
*/
void (*reset)(struct drm_connector *connector);
/**
* @ detect :
*
* Check to see if anything is attached to the connector . The parameter
* force is set to false whilst polling , true when checking the
* connector due to a user request . force can be used by the driver to
* avoid expensive , destructive operations during automated probing .
*
* This callback is optional , if not implemented the connector will be
* considered as always being attached .
*
* FIXME :
*
* Note that this hook is only called by the probe helper . It ' s not in
* the helper library vtable purely for historical reasons . The only DRM
* core entry point to probe connector state is @ fill_modes .
*
* Note that the helper library will already hold
* & drm_mode_config . connection_mutex . Drivers which need to grab additional
* locks to avoid races with concurrent modeset changes need to use
* & drm_connector_helper_funcs . detect_ctx instead .
*
* Also note that this callback can be called no matter the
* state the connector is in . Drivers that need the underlying
* device to be powered to perform the detection will first need
* to make sure it ' s been properly enabled .
*
* RETURNS :
*
* drm_connector_status indicating the connector ' s status .
*/
enum drm_connector_status (*detect)(struct drm_connector *connector,
bool force);
/**
* @ force :
*
* This function is called to update internal encoder state when the
* connector is forced to a certain state by userspace , either through
* the sysfs interfaces or on the kernel cmdline . In that case the
* @ detect callback isn ' t called .
*
* FIXME :
*
* Note that this hook is only called by the probe helper . It ' s not in
* the helper library vtable purely for historical reasons . The only DRM
* core entry point to probe connector state is @ fill_modes .
*/
void (*force)(struct drm_connector *connector);
/**
* @ fill_modes :
*
* Entry point for output detection and basic mode validation . The
* driver should reprobe the output if needed ( e . g . when hotplug
* handling is unreliable ) , add all detected modes to & drm_connector . modes
* and filter out any the device can ' t support in any configuration . It
* also needs to filter out any modes wider or higher than the
* parameters max_width and max_height indicate .
*
* The drivers must also prune any modes no longer valid from
* & drm_connector . modes . Furthermore it must update
* & drm_connector . status and & drm_connector . edid . If no EDID has been
* received for this output connector - > edid must be NULL .
*
* Drivers using the probe helpers should use
* drm_helper_probe_single_connector_modes ( ) to implement this
* function .
*
* RETURNS :
*
* The number of modes detected and filled into & drm_connector . modes .
*/
int (*fill_modes)(struct drm_connector *connector, uint32_t max_width, uint32_t max_height);
/**
* @ set_property :
*
* This is the legacy entry point to update a property attached to the
* connector .
*
* This callback is optional if the driver does not support any legacy
* driver - private properties . For atomic drivers it is not used because
* property handling is done entirely in the DRM core .
*
* RETURNS :
*
* 0 on success or a negative error code on failure .
*/
int (*set_property)(struct drm_connector *connector, struct drm_property *property,
uint64_t val);
/**
* @ late_register :
*
* This optional hook can be used to register additional userspace
* interfaces attached to the connector , light backlight control , i2c ,
* DP aux or similar interfaces . It is called late in the driver load
* sequence from drm_connector_register ( ) when registering all the
* core drm connector interfaces . Everything added from this callback
* should be unregistered in the early_unregister callback .
*
* This is called while holding & drm_connector . mutex .
*
* Returns :
*
* 0 on success , or a negative error code on failure .
*/
int (*late_register)(struct drm_connector *connector);
/**
* @ early_unregister :
*
* This optional hook should be used to unregister the additional
* userspace interfaces attached to the connector from
* late_register ( ) . It is called from drm_connector_unregister ( ) ,
* early in the driver unload sequence to disable userspace access
* before data structures are torndown .
*
* This is called while holding & drm_connector . mutex .
*/
void (*early_unregister)(struct drm_connector *connector);
/**
* @ destroy :
*
* Clean up connector resources . This is called at driver unload time
* through drm_mode_config_cleanup ( ) . It can also be called at runtime
* when a connector is being hot - unplugged for drivers that support
* connector hotplugging ( e . g . DisplayPort MST ) .
*/
void (*destroy)(struct drm_connector *connector);
/**
* @ atomic_duplicate_state :
*
* Duplicate the current atomic state for this connector and return it .
* The core and helpers guarantee that any atomic state duplicated with
* this hook and still owned by the caller ( i . e . not transferred to the
* driver by calling & drm_mode_config_funcs . atomic_commit ) will be
* cleaned up by calling the @ atomic_destroy_state hook in this
* structure .
*
* This callback is mandatory for atomic drivers .
*
* Atomic drivers which don ' t subclass & struct drm_connector_state should use
* drm_atomic_helper_connector_duplicate_state ( ) . Drivers that subclass the
* state structure to extend it with driver - private state should use
* _ _ drm_atomic_helper_connector_duplicate_state ( ) to make sure shared state is
* duplicated in a consistent fashion across drivers .
*
* It is an error to call this hook before & drm_connector . state has been
* initialized correctly .
*
* NOTE :
*
* If the duplicate state references refcounted resources this hook must
* acquire a reference for each of them . The driver must release these
* references again in @ atomic_destroy_state .
*
* RETURNS :
*
* Duplicated atomic state or NULL when the allocation failed .
*/
struct drm_connector_state *(*atomic_duplicate_state)(struct drm_connector *connector);
/**
* @ atomic_destroy_state :
*
* Destroy a state duplicated with @ atomic_duplicate_state and release
* or unreference all resources it references
*
* This callback is mandatory for atomic drivers .
*/
void (*atomic_destroy_state)(struct drm_connector *connector,
struct drm_connector_state *state);
/**
* @ atomic_set_property :
*
* Decode a driver - private property value and store the decoded value
* into the passed - in state structure . Since the atomic core decodes all
* standardized properties ( even for extensions beyond the core set of
* properties which might not be implemented by all drivers ) this
* requires drivers to subclass the state structure .
*
* Such driver - private properties should really only be implemented for
* truly hardware / vendor specific state . Instead it is preferred to
* standardize atomic extension and decode the properties used to expose
* such an extension in the core .
*
* Do not call this function directly , use
* drm_atomic_connector_set_property ( ) instead .
*
* This callback is optional if the driver does not support any
* driver - private atomic properties .
*
* NOTE :
*
* This function is called in the state assembly phase of atomic
* modesets , which can be aborted for any reason ( including on
* userspace ' s request to just check whether a configuration would be
* possible ) . Drivers MUST NOT touch any persistent state ( hardware or
* software ) or data structures except the passed in @ state parameter .
*
* Also since userspace controls in which order properties are set this
* function must not do any input validation ( since the state update is
* incomplete and hence likely inconsistent ) . Instead any such input
* validation must be done in the various atomic_check callbacks .
*
* RETURNS :
*
* 0 if the property has been found , - EINVAL if the property isn ' t
* implemented by the driver ( which shouldn ' t ever happen , the core only
* asks for properties attached to this connector ) . No other validation
* is allowed by the driver . The core already checks that the property
* value is within the range ( integer , valid enum value , . . . ) the driver
* set when registering the property .
*/
int (*atomic_set_property)(struct drm_connector *connector,
struct drm_connector_state *state,
struct drm_property *property,
uint64_t val);
/**
* @ atomic_get_property :
*
* Reads out the decoded driver - private property . This is used to
* implement the GETCONNECTOR IOCTL .
*
* Do not call this function directly , use
* drm_atomic_connector_get_property ( ) instead .
*
* This callback is optional if the driver does not support any
* driver - private atomic properties .
*
* RETURNS :
*
* 0 on success , - EINVAL if the property isn ' t implemented by the
* driver ( which shouldn ' t ever happen , the core only asks for
* properties attached to this connector ) .
*/
int (*atomic_get_property)(struct drm_connector *connector,
const struct drm_connector_state *state,
struct drm_property *property,
uint64_t *val);
/**
* @ atomic_print_state :
*
* If driver subclasses & struct drm_connector_state , it should implement
* this optional hook for printing additional driver specific state .
*
* Do not call this directly , use drm_atomic_connector_print_state ( )
* instead .
*/
void (*atomic_print_state)(struct drm_printer *p,
const struct drm_connector_state *state);
/**
* @ oob_hotplug_event :
*
* This will get called when a hotplug - event for a drm - connector
* has been received from a source outside the display driver / device .
*/
void (*oob_hotplug_event)(struct drm_connector *connector,
enum drm_connector_status status);
/**
* @ debugfs_init :
*
* Allows connectors to create connector - specific debugfs files .
*/
void (*debugfs_init)(struct drm_connector *connector, struct dentry *root);
};
/**
* struct drm_cmdline_mode - DRM Mode passed through the kernel command - line
*
* Each connector can have an initial mode with additional options
* passed through the kernel command line . This structure allows to
* express those parameters and will be filled by the command - line
* parser .
*/
struct drm_cmdline_mode {
/**
* @ name :
*
* Name of the mode .
*/
char name[DRM_DISPLAY_MODE_LEN];
/**
* @ specified :
*
* Has a mode been read from the command - line ?
*/
bool specified;
/**
* @ refresh_specified :
*
* Did the mode have a preferred refresh rate ?
*/
bool refresh_specified;
/**
* @ bpp_specified :
*
* Did the mode have a preferred BPP ?
*/
bool bpp_specified;
/**
* @ pixel_clock :
*
* Pixel Clock in kHz . Optional .
*/
unsigned int pixel_clock;
/**
* @ xres :
*
* Active resolution on the X axis , in pixels .
*/
int xres;
/**
* @ yres :
*
* Active resolution on the Y axis , in pixels .
*/
int yres;
/**
* @ bpp :
*
* Bits per pixels for the mode .
*/
int bpp;
/**
* @ refresh :
*
* Refresh rate , in Hertz .
*/
int refresh;
/**
* @ rb :
*
* Do we need to use reduced blanking ?
*/
bool rb;
/**
* @ interlace :
*
* The mode is interlaced .
*/
bool interlace;
/**
* @ cvt :
*
* The timings will be calculated using the VESA Coordinated
* Video Timings instead of looking up the mode from a table .
*/
bool cvt;
/**
* @ margins :
*
* Add margins to the mode calculation ( 1 . 8 % of xres rounded
* down to 8 pixels and 1 . 8 % of yres ) .
*/
bool margins;
/**
* @ force :
*
* Ignore the hotplug state of the connector , and force its
* state to one of the DRM_FORCE_ * values .
*/
enum drm_connector_force force;
/**
* @ rotation_reflection :
*
* Initial rotation and reflection of the mode setup from the
* command line . See DRM_MODE_ROTATE_ * and
* DRM_MODE_REFLECT_ * . The only rotations supported are
* DRM_MODE_ROTATE_0 and DRM_MODE_ROTATE_180 .
*/
unsigned int rotation_reflection;
/**
* @ panel_orientation :
*
* drm - connector " panel orientation " property override value ,
* DRM_MODE_PANEL_ORIENTATION_UNKNOWN if not set .
*/
enum drm_panel_orientation panel_orientation;
/**
* @ tv_margins : TV margins to apply to the mode .
*/
struct drm_connector_tv_margins tv_margins;
/**
* @ tv_mode : TV mode standard . See DRM_MODE_TV_MODE_ * .
*/
enum drm_connector_tv_mode tv_mode;
/**
* @ tv_mode_specified :
*
* Did the mode have a preferred TV mode ?
*/
bool tv_mode_specified;
};
/**
* struct drm_connector_hdmi_audio - DRM gemeric HDMI Codec - related structure
*
* HDMI drivers usually incorporate a HDMI Codec . This structure expresses the
* generic HDMI Codec as used by the DRM HDMI Codec framework .
*/
struct drm_connector_hdmi_audio {
/**
* @ funcs :
*
* Implementation of the HDMI codec functionality to be used by the DRM
* HDMI Codec framework .
*/
const struct drm_connector_hdmi_audio_funcs *funcs;
/**
* @ codec_pdev :
*
* Platform device created to hold the HDMI Codec . It will be
* automatically unregistered during drm_connector_cleanup ( ) .
*/
struct platform_device *codec_pdev;
/**
* @ lock :
*
* Mutex to protect @ last_state , @ plugged_cb and @ plugged_cb_dev .
*/
struct mutex lock;
/**
* @ plugged_cb :
*
* Callback to be called when the HDMI sink get plugged to or unplugged
* from this connector . This is assigned by the framework when
* requested by the ASoC code .
*/
void (*plugged_cb)(struct device *dev, bool plugged);
/**
* @ plugged_cb_dev :
*
* The data for @ plugged_cb ( ) . It is being provided by the ASoC .
*/
struct device *plugged_cb_dev;
/**
* @ last_state :
*
* Last plugged state recored by the framework . It is used to correctly
* report the state to @ plugged_cb ( ) .
*/
bool last_state;
/**
* @ dai_port :
*
* The port in DT that is used for the Codec DAI .
*/
int dai_port;
};
/*
* struct drm_connector_hdmi - DRM Connector HDMI - related structure
*/
struct drm_connector_hdmi {
#define DRM_CONNECTOR_HDMI_VENDOR_LEN 8
/**
* @ vendor : HDMI Controller Vendor Name
*/
unsigned char vendor[DRM_CONNECTOR_HDMI_VENDOR_LEN] __nonstring;
#define DRM_CONNECTOR_HDMI_PRODUCT_LEN 16
/**
* @ product : HDMI Controller Product Name
*/
unsigned char product[DRM_CONNECTOR_HDMI_PRODUCT_LEN] __nonstring;
/**
* @ supported_formats : Bitmask of @ hdmi_colorspace
* supported by the controller .
*/
unsigned long supported_formats;
/**
* @ funcs : HDMI connector Control Functions
*/
const struct drm_connector_hdmi_funcs *funcs;
/**
* @ infoframes : Current Infoframes output by the connector
*/
struct {
/**
* @ lock : Mutex protecting against concurrent access to
* the infoframes , most notably between KMS and ALSA .
*/
struct mutex lock;
/**
* @ audio : Current Audio Infoframes structure . Protected
* by @ lock .
*/
struct drm_connector_hdmi_infoframe audio;
} infoframes;
};
/**
* struct drm_connector_cec - DRM Connector CEC - related structure
*/
struct drm_connector_cec {
/**
* @ mutex : protects all fields in this structure .
*/
struct mutex mutex;
/**
* @ funcs : CEC Control Functions
*/
const struct drm_connector_cec_funcs *funcs;
/**
* @ data : CEC implementation - specific data
*/
void *data;
};
/**
* struct drm_connector - central DRM connector control structure
*
* 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 {
/** @dev: parent DRM device */
struct drm_device *dev;
/** @kdev: kernel device for sysfs attributes */
struct device *kdev;
/** @attr: sysfs attributes */
struct device_attribute *attr;
/**
* @ fwnode : associated fwnode supplied by platform firmware
*
* Drivers can set this to associate a fwnode with a connector , drivers
* are expected to get a reference on the fwnode when setting this .
* drm_connector_cleanup ( ) will call fwnode_handle_put ( ) on this .
*/
struct fwnode_handle *fwnode;
/**
* @ head :
*
* List of all connectors on a @ dev , linked from
* & drm_mode_config . connector_list . Protected by
* & drm_mode_config . connector_list_lock , but please only use
* & drm_connector_list_iter to walk this list .
*/
struct list_head head;
/**
* @ global_connector_list_entry :
*
* Connector entry in the global connector - list , used by
* drm_connector_find_by_fwnode ( ) .
*/
struct list_head global_connector_list_entry;
/** @base: base KMS object */
struct drm_mode_object base;
/** @name: human readable name, can be overwritten by the driver */
char *name;
/**
* @ mutex : Lock for general connector state , but currently only protects
* @ registered . Most of the connector state is still protected by
* & drm_mode_config . mutex .
*/
struct mutex mutex;
/**
* @ index : Compacted connector index , which matches the position inside
* the mode_config . list for drivers not supporting hot - add / removing . Can
* be used as an array index . It is invariant over the lifetime of the
* connector .
*/
unsigned index;
/**
* @ connector_type :
* one of the DRM_MODE_CONNECTOR_ < foo > types from drm_mode . h
*/
int connector_type;
/** @connector_type_id: index into connector type enum */
int connector_type_id;
/**
* @ interlace_allowed :
* Can this connector handle interlaced modes ? Only used by
* drm_helper_probe_single_connector_modes ( ) for mode filtering .
*/
bool interlace_allowed;
/**
* @ doublescan_allowed :
* Can this connector handle doublescan ? Only used by
* drm_helper_probe_single_connector_modes ( ) for mode filtering .
*/
bool doublescan_allowed;
/**
* @ stereo_allowed :
* Can this connector handle stereo modes ? Only used by
* drm_helper_probe_single_connector_modes ( ) for mode filtering .
*/
bool stereo_allowed;
/**
* @ ycbcr_420_allowed : This bool indicates if this connector is
* capable of handling YCBCR 420 output . While parsing the EDID
* blocks it ' s very helpful to know if the source is capable of
* handling YCBCR 420 outputs .
*/
bool ycbcr_420_allowed;
/**
* @ registration_state : Is this connector initializing , exposed
* ( registered ) with userspace , or unregistered ?
*
* Protected by @ mutex .
*/
enum drm_connector_registration_state registration_state;
/**
* @ modes :
* Modes available on this connector ( from fill_modes ( ) + user ) .
* Protected by & drm_mode_config . mutex .
*/
struct list_head modes;
/**
* @ status :
* One of the drm_connector_status enums ( connected , not , or unknown ) .
* Protected by & drm_mode_config . mutex .
*/
enum drm_connector_status status;
/**
* @ probed_modes :
* These are modes added by probing with DDC or the BIOS , before
* filtering is applied . Used by the probe helpers . Protected by
* & drm_mode_config . mutex .
*/
struct list_head probed_modes;
/**
* @ display_info : Display information is filled from EDID information
* when a display is detected . For non hot - pluggable displays such as
* flat panels in embedded systems , the driver should initialize the
* & drm_display_info . width_mm and & drm_display_info . height_mm fields
* with the physical size of the display .
*
* Protected by & drm_mode_config . mutex .
*/
struct drm_display_info display_info;
/** @funcs: connector control functions */
const struct drm_connector_funcs *funcs;
/**
* @ edid_blob_ptr : DRM property containing EDID if present . Protected by
* & drm_mode_config . mutex .
*
* This must be updated only by calling drm_edid_connector_update ( ) or
* drm_connector_update_edid_property ( ) .
*
* This must not be used by drivers directly .
*/
struct drm_property_blob *edid_blob_ptr;
/** @properties: property tracking for this connector */
struct drm_object_properties properties;
/**
* @ scaling_mode_property : Optional atomic property to control the
* upscaling . See drm_connector_attach_content_protection_property ( ) .
*/
struct drm_property *scaling_mode_property;
/**
* @ vrr_capable_property : Optional property to help userspace
* query hardware support for variable refresh rate on a connector .
* connector . Drivers can add the property to a connector by
* calling drm_connector_attach_vrr_capable_property ( ) .
*
* This should be updated only by calling
* drm_connector_set_vrr_capable_property ( ) .
*/
struct drm_property *vrr_capable_property;
/**
* @ colorspace_property : Connector property to set the suitable
* colorspace supported by the sink .
*/
struct drm_property *colorspace_property;
/**
* @ path_blob_ptr :
*
* DRM blob property data for the DP MST path property . This should only
* be updated by calling drm_connector_set_path_property ( ) .
*/
struct drm_property_blob *path_blob_ptr;
/**
* @ max_bpc : Maximum bits per color channel the connector supports .
*/
unsigned int max_bpc;
/**
* @ max_bpc_property : Default connector property for the max bpc to be
* driven out of the connector .
*/
struct drm_property *max_bpc_property;
/** @privacy_screen: drm_privacy_screen for this connector, or NULL. */
struct drm_privacy_screen *privacy_screen;
/** @privacy_screen_notifier: privacy-screen notifier_block */
struct notifier_block privacy_screen_notifier;
/**
* @ privacy_screen_sw_state_property : Optional atomic property for the
* connector to control the integrated privacy screen .
*/
struct drm_property *privacy_screen_sw_state_property;
/**
* @ privacy_screen_hw_state_property : Optional atomic property for the
* connector to report the actual integrated privacy screen state .
*/
struct drm_property *privacy_screen_hw_state_property;
/**
* @ broadcast_rgb_property : Connector property to set the
* Broadcast RGB selection to output with .
*/
struct drm_property *broadcast_rgb_property;
#define DRM_CONNECTOR_POLL_HPD (1 << 0 )
#define DRM_CONNECTOR_POLL_CONNECT (1 << 1 )
#define DRM_CONNECTOR_POLL_DISCONNECT (1 << 2 )
/**
* @ polled :
*
* Connector polling mode , a combination of
*
* DRM_CONNECTOR_POLL_HPD
* The connector generates hotplug events and doesn ' t need to be
* periodically polled . The CONNECT and DISCONNECT flags must not
* be set together with the HPD flag .
*
* DRM_CONNECTOR_POLL_CONNECT
* Periodically poll the connector for connection .
*
* DRM_CONNECTOR_POLL_DISCONNECT
* Periodically poll the connector for disconnection , without
* causing flickering even when the connector is in use . DACs should
* rarely do this without a lot of testing .
*
* Set to 0 for connectors that don ' t support connection status
* discovery .
*/
uint8_t polled;
/**
* @ dpms : Current dpms state . For legacy drivers the
* & drm_connector_funcs . dpms callback must update this . For atomic
* drivers , this is handled by the core atomic code , and drivers must
* only take & drm_crtc_state . active into account .
*/
int dpms;
/** @helper_private: mid-layer private data */
const struct drm_connector_helper_funcs *helper_private;
/** @cmdline_mode: mode line parsed from the kernel cmdline for this connector */
struct drm_cmdline_mode cmdline_mode;
/** @force: a DRM_FORCE_<foo> state for forced mode sets */
enum drm_connector_force force;
/**
* @ edid_override : Override EDID set via debugfs .
*
* Do not modify or access outside of the drm_edid_override_ * family of
* functions .
*/
const struct drm_edid *edid_override;
/**
* @ edid_override_mutex : Protect access to edid_override .
*/
struct mutex edid_override_mutex;
/** @epoch_counter: used to detect any other changes in connector, besides status */
u64 epoch_counter;
/**
* @ possible_encoders : Bit mask of encoders that can drive this
* connector , drm_encoder_index ( ) determines the index into the bitfield
* and the bits are set with drm_connector_attach_encoder ( ) .
*/
u32 possible_encoders;
/**
* @ encoder : Currently bound encoder driving this connector , if any .
* Only really meaningful for non - atomic drivers . Atomic drivers should
* instead look at & drm_connector_state . best_encoder , and in case they
* need the CRTC driving this output , & drm_connector_state . crtc .
*/
struct drm_encoder *encoder;
#define MAX_ELD_BYTES 128
/** @eld: EDID-like data, if present, protected by @eld_mutex */
uint8_t eld[MAX_ELD_BYTES];
/** @eld_mutex: protection for concurrenct access to @eld */
struct mutex eld_mutex;
/** @latency_present: AV delay info from ELD, if found */
bool latency_present[2 ];
/**
* @ video_latency : Video latency info from ELD , if found .
* [ 0 ] : progressive , [ 1 ] : interlaced
*/
int video_latency[2 ];
/**
* @ audio_latency : audio latency info from ELD , if found
* [ 0 ] : progressive , [ 1 ] : interlaced
*/
int audio_latency[2 ];
/**
* @ ddc : associated ddc adapter .
* A connector usually has its associated ddc adapter . If a driver uses
* this field , then an appropriate symbolic link is created in connector
* sysfs directory to make it easy for the user to tell which i2c
* adapter is for a particular display .
*
* The field should be set by calling drm_connector_init_with_ddc ( ) .
*/
struct i2c_adapter *ddc;
/**
* @ null_edid_counter : track sinks that give us all zeros for the EDID .
* Needed to workaround some HW bugs where we get all 0 s
*/
int null_edid_counter;
/** @bad_edid_counter: track sinks that give us an EDID with invalid checksum */
unsigned bad_edid_counter;
/**
* @ edid_corrupt : Indicates whether the last read EDID was corrupt . Used
* in Displayport compliance testing - Displayport Link CTS Core 1 . 2
* rev1 . 1 4 . 2 . 2 . 6
*/
bool edid_corrupt;
/**
* @ real_edid_checksum : real edid checksum for corrupted edid block .
* Required in Displayport 1 . 4 compliance testing
* rev1 . 1 4 . 2 . 2 . 6
*/
u8 real_edid_checksum;
/** @debugfs_entry: debugfs directory for this connector */
struct dentry *debugfs_entry;
/**
* @ state :
*
* Current atomic state for this connector .
*
* This is protected by & drm_mode_config . connection_mutex . Note that
* nonblocking atomic commits access the current connector state without
* taking locks . Either by going through the & struct drm_atomic_state
* pointers , see for_each_oldnew_connector_in_state ( ) ,
* for_each_old_connector_in_state ( ) and
* for_each_new_connector_in_state ( ) . Or through careful ordering of
* atomic commit operations as implemented in the atomic helpers , see
* & struct drm_crtc_commit .
*/
struct drm_connector_state *state;
/* DisplayID bits. FIXME: Extract into a substruct? */
/**
* @ tile_blob_ptr :
*
* DRM blob property data for the tile property ( used mostly by DP MST ) .
* This is meant for screens which are driven through separate display
* pipelines represented by & drm_crtc , which might not be running with
* genlocked clocks . For tiled panels which are genlocked , like
* dual - link LVDS or dual - link DSI , the driver should try to not expose
* the tiling and virtualize both & drm_crtc and & drm_plane if needed .
*
* This should only be updated by calling
* drm_connector_set_tile_property ( ) .
*/
struct drm_property_blob *tile_blob_ptr;
/** @has_tile: is this connector connected to a tiled monitor */
bool has_tile;
/** @tile_group: tile group for the connected monitor */
struct drm_tile_group *tile_group;
/** @tile_is_single_monitor: whether the tile is one monitor housing */
bool tile_is_single_monitor;
/** @num_h_tile: number of horizontal tiles in the tile group */
/** @num_v_tile: number of vertical tiles in the tile group */
uint8_t num_h_tile, num_v_tile;
/** @tile_h_loc: horizontal location of this tile */
/** @tile_v_loc: vertical location of this tile */
uint8_t tile_h_loc, tile_v_loc;
/** @tile_h_size: horizontal size of this tile. */
/** @tile_v_size: vertical size of this tile. */
uint16_t tile_h_size, tile_v_size;
/**
* @ free_node :
*
* List used only by & drm_connector_list_iter to be able to clean up a
* connector from any context , in conjunction with
* & drm_mode_config . connector_free_work .
*/
struct llist_node free_node;
/**
* @ hdmi : HDMI - related variable and properties .
*/
struct drm_connector_hdmi hdmi;
/**
* @ hdmi_audio : HDMI codec properties and non - DRM state .
*/
struct drm_connector_hdmi_audio hdmi_audio;
/**
* @ cec : CEC - related data .
*/
struct drm_connector_cec cec;
};
#define obj_to_connector(x) container_of(x, struct drm_connector, base)
int drm_connector_init(struct drm_device *dev,
struct drm_connector *connector,
const struct drm_connector_funcs *funcs,
int connector_type);
int drm_connector_dynamic_init(struct drm_device *dev,
struct drm_connector *connector,
const struct drm_connector_funcs *funcs,
int connector_type,
struct i2c_adapter *ddc);
int drm_connector_init_with_ddc(struct drm_device *dev,
struct drm_connector *connector,
const struct drm_connector_funcs *funcs,
int connector_type,
struct i2c_adapter *ddc);
int drmm_connector_init(struct drm_device *dev,
struct drm_connector *connector,
const struct drm_connector_funcs *funcs,
int connector_type,
struct i2c_adapter *ddc);
int drmm_connector_hdmi_init(struct drm_device *dev,
struct drm_connector *connector,
const char *vendor, const char *product,
const struct drm_connector_funcs *funcs,
const struct drm_connector_hdmi_funcs *hdmi_funcs,
int connector_type,
struct i2c_adapter *ddc,
unsigned long supported_formats,
unsigned int max_bpc);
void drm_connector_attach_edid_property(struct drm_connector *connector);
int drm_connector_register(struct drm_connector *connector);
int drm_connector_dynamic_register(struct drm_connector *connector);
void drm_connector_unregister(struct drm_connector *connector);
int drm_connector_attach_encoder(struct drm_connector *connector,
struct drm_encoder *encoder);
void drm_connector_cleanup(struct drm_connector *connector);
static inline unsigned int drm_connector_index(const struct drm_connector *connector)
{
return connector->index;
}
static inline u32 drm_connector_mask(const struct drm_connector *connector)
{
return 1 << connector->index;
}
/**
* drm_connector_lookup - lookup connector object
* @ dev : DRM device
* @ file_priv : drm file to check for lease against .
* @ id : connector object id
*
* This function looks up the connector object specified by id
* add takes a reference to it .
*/
static inline struct drm_connector *drm_connector_lookup(struct drm_device *dev,
struct drm_file *file_priv,
uint32_t id)
{
struct drm_mode_object *mo;
mo = drm_mode_object_find(dev, file_priv, id, DRM_MODE_OBJECT_CONNECTOR);
return mo ? obj_to_connector(mo) : NULL;
}
/**
* drm_connector_get - acquire a connector reference
* @ connector : DRM connector
*
* This function increments the connector ' s refcount .
*/
static inline void drm_connector_get(struct drm_connector *connector)
{
drm_mode_object_get(&connector->base);
}
/**
* drm_connector_put - release a connector reference
* @ connector : DRM connector
*
* This function decrements the connector ' s reference count and frees the
* object if the reference count drops to zero .
*/
static inline void drm_connector_put(struct drm_connector *connector)
{
drm_mode_object_put(&connector->base);
}
/**
* drm_connector_is_unregistered - has the connector been unregistered from
* userspace ?
* @ connector : DRM connector
*
* Checks whether or not @ connector has been unregistered from userspace .
*
* Returns :
* True if the connector was unregistered , false if the connector is
* registered or has not yet been registered with userspace .
*/
static inline bool
drm_connector_is_unregistered(struct drm_connector *connector)
{
return READ_ONCE(connector->registration_state) ==
DRM_CONNECTOR_UNREGISTERED;
}
void drm_connector_oob_hotplug_event(struct fwnode_handle *connector_fwnode,
enum drm_connector_status status);
const char *drm_get_connector_type_name(unsigned int connector_type);
const char *drm_get_connector_status_name(enum drm_connector_status status);
const char *drm_get_subpixel_order_name(enum subpixel_order order);
const char *drm_get_dpms_name(int val);
const char *drm_get_dvi_i_subconnector_name(int val);
const char *drm_get_dvi_i_select_name(int val);
const char *drm_get_tv_mode_name(int val);
const char *drm_get_tv_subconnector_name(int val);
const char *drm_get_tv_select_name(int val);
const char *drm_get_dp_subconnector_name(int val);
const char *drm_get_content_protection_name(int val);
const char *drm_get_hdcp_content_type_name(int val);
int drm_get_tv_mode_from_name(const char *name, size_t len);
int drm_mode_create_dvi_i_properties(struct drm_device *dev);
void drm_connector_attach_dp_subconnector_property(struct drm_connector *connector);
int drm_mode_create_tv_margin_properties(struct drm_device *dev);
int drm_mode_create_tv_properties_legacy(struct drm_device *dev,
unsigned int num_modes,
const char * const modes[]);
int drm_mode_create_tv_properties(struct drm_device *dev,
unsigned int supported_tv_modes);
void drm_connector_attach_tv_margin_properties(struct drm_connector *conn);
int drm_mode_create_scaling_mode_property(struct drm_device *dev);
int drm_connector_attach_content_type_property(struct drm_connector *dev);
int drm_connector_attach_scaling_mode_property(struct drm_connector *connector,
u32 scaling_mode_mask);
int drm_connector_attach_vrr_capable_property(
struct drm_connector *connector);
int drm_connector_attach_broadcast_rgb_property(struct drm_connector *connector);
int drm_connector_attach_colorspace_property(struct drm_connector *connector);
int drm_connector_attach_hdr_output_metadata_property(struct drm_connector *connector);
bool drm_connector_atomic_hdr_metadata_equal(struct drm_connector_state *old_state,
struct drm_connector_state *new_state);
int drm_mode_create_aspect_ratio_property(struct drm_device *dev);
int drm_mode_create_hdmi_colorspace_property(struct drm_connector *connector,
u32 supported_colorspaces);
int drm_mode_create_dp_colorspace_property(struct drm_connector *connector,
u32 supported_colorspaces);
int drm_mode_create_content_type_property(struct drm_device *dev);
int drm_mode_create_suggested_offset_properties(struct drm_device *dev);
int drm_connector_set_path_property(struct drm_connector *connector,
const char *path);
int drm_connector_set_tile_property(struct drm_connector *connector);
int drm_connector_update_edid_property(struct drm_connector *connector,
const struct edid *edid);
void drm_connector_set_link_status_property(struct drm_connector *connector,
uint64_t link_status);
void drm_connector_set_vrr_capable_property(
struct drm_connector *connector, bool capable);
int drm_connector_set_panel_orientation(
struct drm_connector *connector,
enum drm_panel_orientation panel_orientation);
int drm_connector_set_panel_orientation_with_quirk(
struct drm_connector *connector,
enum drm_panel_orientation panel_orientation,
int width, int height);
int drm_connector_set_orientation_from_panel(
struct drm_connector *connector,
struct drm_panel *panel);
int drm_connector_attach_max_bpc_property(struct drm_connector *connector,
int min, int max);
void drm_connector_create_privacy_screen_properties(struct drm_connector *conn);
void drm_connector_attach_privacy_screen_properties(struct drm_connector *conn);
void drm_connector_attach_privacy_screen_provider(
struct drm_connector *connector, struct drm_privacy_screen *priv);
void drm_connector_update_privacy_screen(const struct drm_connector_state *connector_state);
/**
* struct drm_tile_group - Tile group metadata
* @ refcount : reference count
* @ dev : DRM device
* @ id : tile group id exposed to userspace
* @ group_data : Sink - private data identifying this group
*
* @ group_data corresponds to displayid vend / prod / serial for external screens
* with an EDID .
*/
struct drm_tile_group {
struct kref refcount;
struct drm_device *dev;
int id;
u8 group_data[8 ];
};
struct drm_tile_group *drm_mode_create_tile_group(struct drm_device *dev,
const char topology[8 ]);
struct drm_tile_group *drm_mode_get_tile_group(struct drm_device *dev,
const char topology[8 ]);
void drm_mode_put_tile_group(struct drm_device *dev,
struct drm_tile_group *tg);
/**
* struct drm_connector_list_iter - connector_list iterator
*
* This iterator tracks state needed to be able to walk the connector_list
* within struct drm_mode_config . Only use together with
* drm_connector_list_iter_begin ( ) , drm_connector_list_iter_end ( ) and
* drm_connector_list_iter_next ( ) respectively the convenience macro
* drm_for_each_connector_iter ( ) .
*
* Note that the return value of drm_connector_list_iter_next ( ) is only valid
* up to the next drm_connector_list_iter_next ( ) or
* drm_connector_list_iter_end ( ) call . If you want to use the connector later ,
* then you need to grab your own reference first using drm_connector_get ( ) .
*/
struct drm_connector_list_iter {
/* private: */
struct drm_device *dev;
struct drm_connector *conn;
};
void drm_connector_list_iter_begin(struct drm_device *dev,
struct drm_connector_list_iter *iter);
struct drm_connector *
drm_connector_list_iter_next(struct drm_connector_list_iter *iter);
void drm_connector_list_iter_end(struct drm_connector_list_iter *iter);
bool drm_connector_has_possible_encoder(struct drm_connector *connector,
struct drm_encoder *encoder);
const char *drm_get_colorspace_name(enum drm_colorspace colorspace);
/**
* drm_for_each_connector_iter - connector_list iterator macro
* @ connector : & struct drm_connector pointer used as cursor
* @ iter : & struct drm_connector_list_iter
*
* Note that @ connector is only valid within the list body , if you want to use
* @ connector after calling drm_connector_list_iter_end ( ) then you need to grab
* your own reference first using drm_connector_get ( ) .
*/
#define drm_for_each_connector_iter(connector, iter) \
while ((connector = drm_connector_list_iter_next(iter)))
/**
* drm_connector_for_each_possible_encoder - iterate connector ' s possible encoders
* @ connector : & struct drm_connector pointer
* @ encoder : & struct drm_encoder pointer used as cursor
*/
#define drm_connector_for_each_possible_encoder(connector, encoder) \
drm_for_each_encoder_mask(encoder, (connector)->dev, \
(connector)->possible_encoders)
#endif
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