On Sat, Mar 6, 2010 at 10:36 PM, Rafael J. Wysocki <r...@sisk.pl> wrote: > Hi, > > For at least two reasons it would be beneficial for some code outisde the > graphics driver(s) to know if the KMS are used. > > First, in the non-KMS (ie. UMS) case we probably wouldn't want to call > acpi_video_resume(), because that has a potential to mess up with the GPU > (it actually is known to do that on at least one system). > > Second, in the KMS case, we'd be able to skip the kernel VT switch, because > the KMS driver uses its own framebuffer anyway. > > So, is there any reasonable way to check that from the outside of the graphics > driver? It should be general enough to cover the cases when there are two > graphics adapters with different drivers in the system and so forth.
Inside the kernel? If you have a struct pci_dev you can get the associated struct drm_device with pci_get_drvdata and then check the KMS feature: drm_core_check_feature(dev, DRIVER_MODESET). I'm note sure how to check that a device is graphic card though :| Luca ------------------------------------------------------------------------------ Download Intel® Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev -- _______________________________________________ Dri-devel mailing list Dri-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/dri-devel
