5ed5fa1060
Add a new API that allows the caller to skip any forced probing, which may require slow i2c to a remote display, and only report the currently active mode and encoder for a Connector. This is often the information of interest and is much, much faster than re-retrieving the link status and EDIDs, e.g. if the caller only wishes to count the number of active outputs. v2: Fix error path to avoid double free after a failed GETCONNECTOR ioctl. v3: Daniel strongly disapproved of my disjoint in behaviour between GetConnector and GetConnectorCurrent, and considering how best to make a drop in replacement for drmmode_output_init() convinced me keeping the API as consistent as possible was the right approach. v4: Avoid probing on the second calls to GETCONNECTOR for unconnected outputs. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Daniel Vetter <daniel.vetter@ffwll.com> Cc: Damien Lespiau <damien.lespiau@intel.com> Cc: David Herrmann <dh.herrmann@googlemail.com> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> |
||
---|---|---|
exynos | ||
freedreno | ||
include/drm | ||
intel | ||
libkms | ||
m4 | ||
man | ||
nouveau | ||
omap | ||
radeon | ||
tegra | ||
tests | ||
.gitignore | ||
Android.mk | ||
CleanSpec.mk | ||
Makefile.am | ||
Makefile.sources | ||
README | ||
RELEASING | ||
autogen.sh | ||
configure.ac | ||
libdrm.h | ||
libdrm.pc.in | ||
libdrm_lists.h | ||
xf86atomic.h | ||
xf86drm.c | ||
xf86drm.h | ||
xf86drmHash.c | ||
xf86drmHash.h | ||
xf86drmMode.c | ||
xf86drmMode.h | ||
xf86drmRandom.c | ||
xf86drmRandom.h | ||
xf86drmSL.c |
README
libdrm - userspace library for drm This is libdrm, a userspace library for accessing the DRM, direct rendering manager, on Linux, BSD and other operating systes that support the ioctl interface. The library provides wrapper functions for the ioctls to avoid exposing the kernel interface directly, and for chipsets with drm memory manager, support for tracking relocations and buffers. libdrm is a low-level library, typically used by graphics drivers such as the Mesa DRI drivers, the X drivers, libva and similar projects. New functionality in the kernel DRM drivers typically requires a new libdrm, but a new libdrm will always work with an older kernel. Compiling --------- libdrm is a standard autotools packages and follows the normal configure, build and install steps. The first step is to configure the package, which is done by running the configure shell script: ./configure By default, libdrm will install into the /usr/local/ prefix. If you want to install this DRM to replace your system copy, pass --prefix=/usr and --exec-prefix=/ to configure. If you are building libdrm from a git checkout, you first need to run the autogen.sh script. You can pass any options to autogen.sh that you would other wise pass to configure, or you can just re-run configure with the options you need once autogen.sh finishes. Next step is to build libdrm: make and once make finishes successfully, install the package using make install If you are install into a system location, you will need to be root to perform the install step.