From: Dave Airlie airlied@redhat.com
This lets the kernel tell userspace if the device supports prime import/export.
This is useful for -modesetting at least, but would be nice for other drivers.
Signed-off-by: Dave Airlie airlied@redhat.com --- drivers/gpu/drm/drm_ioctl.c | 4 ++++ include/drm/drm.h | 4 ++++ 2 files changed, 8 insertions(+), 0 deletions(-)
diff --git a/drivers/gpu/drm/drm_ioctl.c b/drivers/gpu/drm/drm_ioctl.c index cf85155..64a62c6 100644 --- a/drivers/gpu/drm/drm_ioctl.c +++ b/drivers/gpu/drm/drm_ioctl.c @@ -283,6 +283,10 @@ int drm_getcap(struct drm_device *dev, void *data, struct drm_file *file_priv) case DRM_CAP_DUMB_PREFER_SHADOW: req->value = dev->mode_config.prefer_shadow; break; + case DRM_CAP_PRIME: + req->value |= dev->driver->prime_fd_to_handle ? DRM_PRIME_CAP_IMPORT : 0; + req->value |= dev->driver->prime_handle_to_fd ? DRM_PRIME_CAP_EXPORT : 0; + break; default: return -EINVAL; } diff --git a/include/drm/drm.h b/include/drm/drm.h index 64ff02d..34d6335 100644 --- a/include/drm/drm.h +++ b/include/drm/drm.h @@ -775,6 +775,10 @@ struct drm_event_vblank { #define DRM_CAP_VBLANK_HIGH_CRTC 0x2 #define DRM_CAP_DUMB_PREFERRED_DEPTH 0x3 #define DRM_CAP_DUMB_PREFER_SHADOW 0x4 +#define DRM_CAP_PRIME 0x5 + +#define DRM_PRIME_CAP_IMPORT 0x1 +#define DRM_PRIME_CAP_EXPORT 0x2
/* typedef area */ #ifndef __KERNEL__