other versions
- jessie 3.16.56-1+deb8u1
DRM_CVT_MODE(9) | DRM Core | DRM_CVT_MODE(9) |
NAME¶
drm_cvt_mode - create a modeline based on the CVT algorithmSYNOPSIS¶
struct drm_display_mode *
drm_cvt_mode(struct drm_device * dev,
int hdisplay, int vdisplay,
int vrefresh, bool reduced,
bool interlaced,
bool margins);
ARGUMENTS¶
devdrm device
hdisplay
hdisplay size
vdisplay
vdisplay size
vrefresh
vrefresh rate
reduced
whether to use reduced blanking
interlaced
whether to compute an interlaced mode
margins
whether to add margins (borders)
DESCRIPTION¶
This function is called to generate the modeline based on CVT algorithm according to the hdisplay, vdisplay, vrefresh. It is based from the VESA(TM) Coordinated Video Timing Generator by Graham Loveridge April 9, 2003 available atHTTP¶
//www.elo.utfsm.cl/~elo212/docs/CVTd6r1.xls And it is copied from xf86CVTmode in xserver/hw/xfree86/modes/xf86cvt.c. What I have done is to translate it by using integer calculation.RETURNS¶
The modeline based on the CVT algorithm stored in a drm_display_mode object. The display mode object is allocated with drm_mode_create. Returns NULL when no mode could be allocated.AUTHORS¶
Jesse Barnes <jesse.barnes@intel.com>Initial version
Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Driver internals
Daniel Vetter <daniel.vetter@ffwll.ch>
Contributions all over the place
COPYRIGHT¶
May 2018 | Kernel Hackers Manual 3.16 |