GPU accelerators usually don't have display block or the display driver part can be disable when building driver(for servers it save some resources) so it is important let userspace check this capability too.
Signed-off-by: José Roberto de Souza jose.souza@intel.com --- drivers/gpu/drm/drm_ioctl.c | 3 +++ include/uapi/drm/drm.h | 1 + 2 files changed, 4 insertions(+)
diff --git a/drivers/gpu/drm/drm_ioctl.c b/drivers/gpu/drm/drm_ioctl.c index ea10e9a26aad..3a8438ae9b51 100644 --- a/drivers/gpu/drm/drm_ioctl.c +++ b/drivers/gpu/drm/drm_ioctl.c @@ -244,6 +244,9 @@ static int drm_getcap(struct drm_device *dev, void *data, struct drm_file *file_ case DRM_CAP_SYNCOBJ: req->value = drm_core_check_feature(dev, DRIVER_SYNCOBJ); return 0; + case DRM_CAP_MODESET: + req->value = drm_core_check_feature(dev, DRIVER_MODESET); + return 0; }
/* Other caps only work with KMS drivers */ diff --git a/include/uapi/drm/drm.h b/include/uapi/drm/drm.h index 300f336633f2..85fae6ddbf48 100644 --- a/include/uapi/drm/drm.h +++ b/include/uapi/drm/drm.h @@ -649,6 +649,7 @@ struct drm_gem_open { #define DRM_CAP_PAGE_FLIP_TARGET 0x11 #define DRM_CAP_CRTC_IN_VBLANK_EVENT 0x12 #define DRM_CAP_SYNCOBJ 0x13 +#define DRM_CAP_MODESET 0x14
/** DRM_IOCTL_GET_CAP ioctl argument type */ struct drm_get_cap {