drm_fb_helper_fill_var(9) [centos man page]

DRM_FB_HELPER_FILL_V(9) 					   DRM Internals					   DRM_FB_HELPER_FILL_V(9)

NAME

       drm_fb_helper_fill_var - initalizes variable fbdev information

SYNOPSIS

       void drm_fb_helper_fill_var(struct fb_info * info, struct drm_fb_helper * fb_helper, uint32_t fb_width, uint32_t fb_height);

ARGUMENTS

       info
	   fbdev instance to set up

       fb_helper
	   fb helper instance to use as template

       fb_width
	   desired fb width

       fb_height
	   desired fb height

DESCRIPTION

       Sets up the variable fbdev metainformation from the given fb helper instance and the drm framebuffer allocated in fb_helper->fb.

       Drivers should call this (or their equivalent setup code) from their ->fb_probe callback after having allocated the fbdev backing storage
       framebuffer.

AUTHORS

       Jesse Barnes <jesse.barnes@intel.com>
       Intel Corporation,
	   Initial version

       Laurent Pinchart <laurent.pinchart@ideasonboard.com>
       Ideas on board SPRL,
	   Driver internals

COPYRIGHT

Kernel Hackers Manual 3.10					     June 2014						   DRM_FB_HELPER_FILL_V(9)

FBDEV(4)						     Kernel Interfaces Manual							  FBDEV(4)

NAME

       fbdev - video driver for framebuffer device

SYNOPSIS

       Section "Device"
	 Identifier "devname"
	 Driver "fbdev"
	 BusID	"pci:bus:dev:func"
	 ...
       EndSection

DESCRIPTION

       fbdev  is an Xorg driver for framebuffer devices.  This is a non-accelerated driver, the following framebuffer depths are supported: 8, 15,
       16, 24.	All visual types are supported for depth 8, and TrueColor visual is supported for the other depths.  Multi-head configurations are
       supported.

SUPPORTED HARDWARE

       The fbdev driver supports all hardware where a framebuffer driver is available.	fbdev uses the os-specific submodule fbdevhw(4) to talk to
       the kernel device driver.  Currently a fbdevhw module is available for linux.

CONFIGURATION DETAILS

       Please refer to xorg.conf(5) for general configuration details.	This section only covers configuration details specific to this driver.

       For this driver it is not required to specify modes in the screen section of the config file.  The fbdev driver can pick up  the  currently
       used video mode from the framebuffer driver and will use it if there are no video modes configured.

       For  PCI  boards you might have to add a BusID line to the Device section.  See above for a sample line.  You can use " -scanpci" to figure
       out the correct values.

       The following driver Options are supported:

       Option "fbdev" "string"
	      The framebuffer device to use. Default: /dev/fb0.

       Option "ShadowFB" "boolean"
	      Enable or disable use of the shadow framebuffer layer.  Default: on.

       Option "Rotate" "string"
	      Enable rotation of the display. The supported values are "CW" (clockwise, 90 degrees), "UD" (upside down,  180  degrees)	and  "CCW"
	      (counter clockwise, 270 degrees). Implies use of the shadow framebuffer layer.   Default: off.

SEE ALSO

       Xorg(1), xorg.conf(5), Xserver(1), X(7), fbdevhw(4)

AUTHORS

       Authors include: Gerd Knorr, Michel Danzer, Geert Uytterhoeven

X Version 11						      xf86-video-fbdev 0.4.1							  FBDEV(4)