On Wed, Jul 10, 2013 at 7:45 AM, Rhyland Klein <rklein@xxxxxxxxxx> wrote: > We are currently looking into exporting some information from the linux > kernel to userspace about the GPU. This information is specific per > board as the data can vary depending on the fuses burnt on the board. > > Right now we are leaning towards adding sysfs properties to our existing > nodes to share this information. > > Before we write up the patches and update our userspace apps to check > the new locations, we wanted to make sure there wasn't a more > accepted/proper way to export information already. > > Right now for instance we want to export a property to say how many > pixel pipes there are. This could then be exported in something like: > > /sys/bus/platform/drivers/gr3d/54180000.gr3d/num_pixel_pipes > > Is this the best approach to take right now or is there another way we > should export this and similar HW specific information? All the x86 GPU drivers use gpu specific get param ioctls for this so far. e.g. drivers/gpu/drm/radeon/radeon_kms.c:radeon_info_ioctl Dave. Dave. -- To unsubscribe from this list: send the line "unsubscribe linux-tegra" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
