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DRMMODEGETRESOURCES(3)	   Direct Rendering Manager	DRMMODEGETRESOURCES(3)

NAME
       drmModeGetResources - retrieve current display configuration
       information

SYNOPSIS
       #include	<xf86drm.h>

       #include	<xf86drmMode.h>

       drmModeResPtr drmModeGetResources(int fd);

DESCRIPTION
       drmModeGetResources allocates, populates, and returns a drmModeRes
       structure containing information	about the current display
       configuration. The structure contains the following fields:

	   typedef struct _drmModeRes {
	       int count_fbs;
	       uint32_t	*fbs;

	       int count_crtcs;
	       uint32_t	*crtcs;

	       int count_connectors;
	       uint32_t	*connectors;

	       int count_encoders;
	       uint32_t	*encoders;

	       uint32_t	min_width, max_width;
	       uint32_t	min_height, max_height;
	   } drmModeRes, *drmModeResPtr;

       The count_fbs and fbs fields indicate the number	of currently allocated
       framebuffer objects (i.e., objects that can be attached to a given CRTC
       or sprite for display).

       The count_crtcs and crtcs fields	list the available CRTCs in the
       configuration. A	CRTC is	simply an object that can scan out a
       framebuffer to a	display	sink, and contains mode	timing and relative
       position	information. CRTCs drive encoders, which are responsible for
       converting the pixel stream into	a specific display protocol (e.g.,
       MIPI or HDMI).

       The count_connectors and	connectors fields list the available physical
       connectors on the system. Note that some	of these may not be exposed
       from the	chassis	(e.g., LVDS or eDP). Connectors	are attached to
       encoders	and contain information	about the attached display sink	(e.g.,
       width and height	in mm, subpixel	ordering, and various other
       properties).

       The count_encoders and encoders fields list the available encoders on
       the device. Each	encoder	may be associated with a CRTC, and may be used
       to drive	a particular encoder.

       The min*	and max* fields	indicate the maximum size of a framebuffer for
       this device (i.e., the scanout size limit).

RETURN VALUE
       drmModeGetResources returns a drmModeRes	structure pointer on success,
       NULL on failure.	The returned structure must be freed with
       drmModeFreeResources(3).

REPORTING BUGS
       Bugs in this function should be reported	to
       https://bugs.freedesktop.org/enter_bug.cgi?product=DRI&component=libdrm
       under the "DRI" product,	component "libdrm"

SEE ALSO
       drm(7), drm-kms(7), drmModeGetFB(3), drmModeAddFB(3), drmModeAddFB2(3),
       drmModeRmFB(3), drmModeDirtyFB(3), drmModeGetCrtc(3),
       drmModeSetCrtc(3), drmModeGetEncoder(3),	drmModeGetConnector(3)

libdrm				September 2012		DRMMODEGETRESOURCES(3)

NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | REPORTING BUGS | SEE ALSO

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