On Thu, Oct 22, 2015 at 05:27:00PM -0700, Matt Roper wrote:
> Tell the kernel that we understand atomic and want to have access to
> atomic-only properties.  If the kernel doesn't support atomic for i915
> yet (and i915.nuclear_pageflip=1 isn't passed on the kernel command
> line) this will silently fail, but won't cause any problems.
> 
> We wrap this in an #ifdef to allow compilation on pre-atomic libdrm
> versions as well.
> 
> Signed-off-by: Matt Roper <[email protected]>
> ---
>  lib/igt_kms.c | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/lib/igt_kms.c b/lib/igt_kms.c
> index 51d735d..53bfc20 100644
> --- a/lib/igt_kms.c
> +++ b/lib/igt_kms.c
> @@ -984,6 +984,9 @@ void igt_display_init(igt_display_t *display, int drm_fd)
>       display->n_pipes = resources->count_crtcs;
>  
>       drmSetClientCap(drm_fd, DRM_CLIENT_CAP_UNIVERSAL_PLANES, 1);
> +#ifdef DRM_CLIENT_CAP_ATOMIC

Just bumb the libdrm requirement in configure.ac imo.
-Daniel

> +     drmSetClientCap(drm_fd, DRM_CLIENT_CAP_ATOMIC, 1);
> +#endif
>       plane_resources = drmModeGetPlaneResources(display->drm_fd);
>       igt_assert(plane_resources);
>  
> -- 
> 2.1.4
> 
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-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
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