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drm/vc4: Add a getparam to signal support for branches.

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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 <eric@anholt.net>
This commit is contained in:
Eric Anholt 2016-07-02 14:14:27 -07:00
parent 6d45c81d22
commit 7363cee5b4
2 changed files with 4 additions and 0 deletions
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include/uapi/drm/vc4_drm.h
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@ -285,6 +285,7 @@ struct drm_vc4_get_hang_state {
#define DRM_VC4_PARAM_V3D_IDENT0 0
#define DRM_VC4_PARAM_V3D_IDENT1 1
#define DRM_VC4_PARAM_V3D_IDENT2 2
#define DRM_VC4_PARAM_SUPPORTS_BRANCHES 3
struct drm_vc4_get_param {
__u32 param;