#include <linux/spinlock.h>
#include <linux/types.h>
#include <linux/idr.h>
#include <linux/fb.h>

Data Structures
struct	drm_crtc_helper_funcs

struct	drm_encoder_helper_funcs

struct	drm_connector_helper_funcs

Enumerations
enum	mode_set_atomic { LEAVE_ATOMIC_MODE_SET, ENTER_ATOMIC_MODE_SET }

Functions
int	drm_helper_probe_single_connector_modes (struct drm_connector *connector, uint32_t maxX, uint32_t maxY)

void	drm_helper_disable_unused_functions (struct drm_device *dev)

int	drm_crtc_helper_set_config (struct drm_mode_set *set)

bool	drm_crtc_helper_set_mode (struct drm_crtc crtc, struct drm_display_mode mode, int x, int y, struct drm_framebuffer *old_fb)

bool	drm_helper_crtc_in_use (struct drm_crtc *crtc)

bool	drm_helper_encoder_in_use (struct drm_encoder *encoder)

void	drm_helper_connector_dpms (struct drm_connector *connector, int mode)

int	drm_helper_mode_fill_fb_struct (struct drm_framebuffer fb, struct drm_mode_fb_cmd2 mode_cmd)

int	drm_helper_resume_force_mode (struct drm_device *dev)

void	drm_kms_helper_poll_init (struct drm_device *dev)

void	drm_kms_helper_poll_fini (struct drm_device *dev)

void	drm_helper_hpd_irq_event (struct drm_device *dev)

void	drm_kms_helper_poll_disable (struct drm_device *dev)

void	drm_kms_helper_poll_enable (struct drm_device *dev)

Enumeration Type Documentation

enum mode_set_atomic

Enumerator:

LEAVE_ATOMIC_MODE_SET
ENTER_ATOMIC_MODE_SET

Definition at line 42 of file drm_crtc_helper.h.

Function Documentation

int drm_crtc_helper_set_config ( struct drm_mode_set * set )

drm_crtc_helper_set_config - set a new config from userspace : CRTC to setup : user provided configuration : new mode to set : set of connectors for the new config : new framebuffer

LOCKING: Caller must hold mode config lock.

Setup a new configuration, provided by the user in , and enable it.

RETURNS: Zero. (FIXME)

Definition at line 509 of file drm_crtc_helper.c.

bool drm_crtc_helper_set_mode	(	struct drm_crtc *	crtc,
		struct drm_display_mode *	mode,
		int	x,
		int	y,
		struct drm_framebuffer *	old_fb
	)

drm_crtc_set_mode - set a mode : CRTC to program : mode to use : width of mode : height of mode

LOCKING: Caller must hold mode config lock.

Try to set on . Give and its associated connectors a chance to fixup or reject the mode prior to trying to set it.

RETURNS: True if the mode was set successfully, or false otherwise.

Definition at line 343 of file drm_crtc_helper.c.

void drm_helper_connector_dpms	(	struct drm_connector *	connector,
		int	mode
	)

drm_helper_connector_dpms affected connector DPMS mode

Calls the low-level connector DPMS function, then calls appropriate encoder and crtc DPMS functions as well

Definition at line 810 of file drm_crtc_helper.c.

bool drm_helper_crtc_in_use ( struct drm_crtc * crtc )

drm_helper_crtc_in_use - check if a given CRTC is in a mode_config : CRTC to check

LOCKING: Caller must hold mode config lock.

Walk 's DRM device's mode_config and see if it's in use.

RETURNS: True if is part of the mode_config, false otherwise.

Definition at line 207 of file drm_crtc_helper.c.

void drm_helper_disable_unused_functions ( struct drm_device * dev )

drm_helper_disable_unused_functions - disable unused objects : DRM device

LOCKING: Caller must hold mode config lock.

If an connector or CRTC isn't part of 's mode_config, it can be disabled by calling its dpms function, which should power it off.

Definition at line 240 of file drm_crtc_helper.c.

bool drm_helper_encoder_in_use ( struct drm_encoder * encoder )

drm_helper_encoder_in_use - check if a given encoder is in use : encoder to check

LOCKING: Caller must hold mode config lock.

Walk 's DRM device's mode_config and see if it's in use.

RETURNS: True if is part of the mode_config, false otherwise.

Definition at line 184 of file drm_crtc_helper.c.

void drm_helper_hpd_irq_event ( struct drm_device * dev )

Definition at line 1015 of file drm_crtc_helper.c.

int drm_helper_mode_fill_fb_struct	(	struct drm_framebuffer *	fb,
		struct drm_mode_fb_cmd2 *	mode_cmd
	)

Definition at line 858 of file drm_crtc_helper.c.

int drm_helper_probe_single_connector_modes	(	struct drm_connector *	connector,
		uint32_t	maxX,
		uint32_t	maxY
	)

drm_helper_probe_single_connector_modes - get complete set of display modes : DRM device : max width for modes : max height for modes

LOCKING: Caller must hold mode config lock.

Based on 's mode_config layout, scan all the connectors and try to detect modes on them. Modes will first be added to the connector's probed_modes list, then culled (based on validity and the , parameters) and put into the normal modes list.

Intended to be used either at bootup time or when major configuration changes have occurred.

FIXME: take into account monitor limits

RETURNS: Number of modes found on .

Definition at line 87 of file drm_crtc_helper.c.

int drm_helper_resume_force_mode ( struct drm_device * dev )

Definition at line 877 of file drm_crtc_helper.c.

void drm_kms_helper_poll_disable ( struct drm_device * dev )

Definition at line 974 of file drm_crtc_helper.c.

void drm_kms_helper_poll_enable ( struct drm_device * dev )

Definition at line 982 of file drm_crtc_helper.c.

void drm_kms_helper_poll_fini ( struct drm_device * dev )

Definition at line 1009 of file drm_crtc_helper.c.

void drm_kms_helper_poll_init ( struct drm_device * dev )

Definition at line 1000 of file drm_crtc_helper.c.

Data Structures

Enumerations

Functions

Enumeration Type Documentation

Function Documentation