From 7363cee5b467c31dc3af2ac98df0634bb8bbc668 Mon Sep 17 00:00:00 2001 From: Eric Anholt Date: Sat, 2 Jul 2016 14:14:27 -0700 Subject: drm/vc4: Add a getparam to signal support for branches. Userspace needs to know if it can create shaders that do branching. Otherwise, for backwards compatibility with old kernels it needs to lower if statements to conditional assignments. Signed-off-by: Eric Anholt --- drivers/gpu/drm/vc4/vc4_drv.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'drivers/gpu/drm/vc4') diff --git a/drivers/gpu/drm/vc4/vc4_drv.c b/drivers/gpu/drm/vc4/vc4_drv.c index 047d7a265ceb..9435894822d5 100644 --- a/drivers/gpu/drm/vc4/vc4_drv.c +++ b/drivers/gpu/drm/vc4/vc4_drv.c @@ -76,6 +76,9 @@ static int vc4_get_param_ioctl(struct drm_device *dev, void *data, args->value = V3D_READ(V3D_IDENT2); pm_runtime_put(&vc4->v3d->pdev->dev); break; + case DRM_VC4_PARAM_SUPPORTS_BRANCHES: + args->value = true; + break; default: DRM_DEBUG("Unknown parameter %d\n", args->param); return -EINVAL; -- cgit v1.2.3