#include <drm_encoder.h>

Collaboration diagram for drm_encoder:

[legend]

Public Attributes
struct drm_device *	dev

struct list_head	head

struct drm_mode_object	base

char *	name

int	encoder_type

unsigned	index

uint32_t	possible_crtcs

uint32_t	possible_clones

struct drm_crtc *	crtc

struct list_head	bridge_chain

struct mutex	bridge_chain_mutex

const struct drm_encoder_funcs *	funcs

const struct drm_encoder_helper_funcs *	helper_private

struct dentry *	debugfs_entry

Member Data Documentation

◆ base

struct drm_mode_object drm_encoder::base

◆ bridge_chain

struct list_head drm_encoder::bridge_chain

@bridge_chain: Bridges attached to this encoder. Drivers shall not access this field directly.

◆ bridge_chain_mutex

struct mutex drm_encoder::bridge_chain_mutex

@bridge_chain_mutex: protect bridge_chain from changes while iterating

◆ crtc

struct drm_crtc* drm_encoder::crtc

@crtc: Currently bound CRTC, only really meaningful for non-atomic drivers. Atomic drivers should instead check &drm_connector_state.crtc.

◆ debugfs_entry

struct dentry* drm_encoder::debugfs_entry

@debugfs_entry:

Debugfs directory for this CRTC.

◆ dev

struct drm_device* drm_encoder::dev

◆ encoder_type

int drm_encoder::encoder_type

@encoder_type:

One of the DRM_MODE_ENCODER_<foo> types in drm_mode.h. The following encoder types are defined thus far:

DRM_MODE_ENCODER_DAC for VGA and analog on DVI-I/DVI-A.
DRM_MODE_ENCODER_TMDS for DVI, HDMI and (embedded) DisplayPort.
DRM_MODE_ENCODER_LVDS for display panels, or in general any panel with a proprietary parallel connector.
DRM_MODE_ENCODER_TVDAC for TV output (Composite, S-Video, Component, SCART).
DRM_MODE_ENCODER_VIRTUAL for virtual machine displays
DRM_MODE_ENCODER_DSI for panels connected using the DSI serial bus.
DRM_MODE_ENCODER_DPI for panels connected using the DPI parallel bus.
DRM_MODE_ENCODER_DPMST for special fake encoders used to allow mutliple DP MST streams to share one physical encoder.

◆ funcs

const struct drm_encoder_funcs* drm_encoder::funcs

◆ head

struct list_head drm_encoder::head

◆ helper_private

const struct drm_encoder_helper_funcs* drm_encoder::helper_private

◆ index

unsigned drm_encoder::index

@index: Position inside the mode_config.list, can be used as an array index. It is invariant over the lifetime of the encoder.

◆ name

char* drm_encoder::name

◆ possible_clones

uint32_t drm_encoder::possible_clones

@possible_clones: Bitmask of potential sibling encoders for cloning, using drm_encoder_index() as the index into the bitfield. The driver must set the bits for all &drm_encoder objects which can clone a &drm_crtc together with this encoder before calling drm_dev_register(). Drivers should set the bit representing the encoder itself, too. Cloning bits should be set such that when two encoders can be used in a cloned configuration, they both should have each another bits set.

As an exception to the above rule if the driver doesn't implement any cloning it can leave @possible_clones set to 0. The core will automagically fix this up by setting the bit for the encoder itself.

You will get a WARN if you get this wrong in the driver.

Note that since encoder objects can't be hotplugged the assigned indices are stable and hence known before registering all objects.

◆ possible_crtcs

uint32_t drm_encoder::possible_crtcs

@possible_crtcs: Bitmask of potential CRTC bindings, using drm_crtc_index() as the index into the bitfield. The driver must set the bits for all &drm_crtc objects this encoder can be connected to before calling drm_dev_register().