[PATCH] Add freesync ioctl interface

[Dave Airlie]

On 2 August 2016 at 12:26, Hawking Zhang <Hawking.Zhang at amd.com> wrote:
> Change-Id: I38cb3a80e75a904cee875ae47bc0a39a3d471aca
> Signed-off-by: Hawking Zhang <Hawking.Zhang at amd.com>
> ---
>  include/drm/amdgpu_drm.h | 15 +++++++++++++++
>  1 file changed, 15 insertions(+)
>
> diff --git a/include/drm/amdgpu_drm.h b/include/drm/amdgpu_drm.h
> index 46a3c40..a4f816c 100644
> --- a/include/drm/amdgpu_drm.h
> +++ b/include/drm/amdgpu_drm.h
> @@ -48,6 +48,7 @@
>  #define DRM_AMDGPU_GEM_USERPTR         0x11
>  #define DRM_AMDGPU_WAIT_FENCES         0x12
>  #define DRM_AMDGPU_GEM_FIND_BO          0x13
> +#define DRM_AMDGPU_FREESYNC             0x14
>
>  #define DRM_IOCTL_AMDGPU_GEM_CREATE    DRM_IOWR(DRM_COMMAND_BASE + DRM_AMDGPU_GEM_CREATE, union drm_amdgpu_gem_create)
>  #define DRM_IOCTL_AMDGPU_GEM_MMAP      DRM_IOWR(DRM_COMMAND_BASE + DRM_AMDGPU_GEM_MMAP, union drm_amdgpu_gem_mmap)
> @@ -63,6 +64,7 @@
>  #define DRM_IOCTL_AMDGPU_GEM_USERPTR   DRM_IOWR(DRM_COMMAND_BASE + DRM_AMDGPU_GEM_USERPTR, struct drm_amdgpu_gem_userptr)
>  #define DRM_IOCTL_AMDGPU_WAIT_FENCES   DRM_IOWR(DRM_COMMAND_BASE + DRM_AMDGPU_WAIT_FENCES, union drm_amdgpu_wait_fences)
>  #define DRM_IOCTL_AMDGPU_GEM_FIND_BO      DRM_IOWR(DRM_COMMAND_BASE + DRM_AMDGPU_GEM_FIND_BO, struct drm_amdgpu_gem_find_bo)
> +#define DRM_IOCTL_AMDGPU_FREESYNC       DRM_IOWR(DRM_COMMAND_BASE + DRM_AMDGPU_FREESYNC, struct drm_amdgpu_freesync)
>
>  #define AMDGPU_GEM_DOMAIN_CPU          0x1
>  #define AMDGPU_GEM_DOMAIN_GTT          0x2
> @@ -706,4 +708,17 @@ struct drm_amdgpu_virtual_range {
>         uint64_t start;
>         uint64_t end;
>  };
> +
> +/*
> + * Definition of free sync enter and exit signals
> + * We may have more options in the future
> + */
> +#define AMDGPU_FREESYNC_FULLSCREEN_ENTER                1
> +#define AMDGPU_FREESYNC_FULLSCREEN_EXIT                 2
> +
> +struct drm_amdgpu_freesync {
> +        __u32 op;                       /* AMDGPU_FREESYNC_FULLSCREEN_ENTER or */
> +                                        /* AMDGPU_FREESYNC_FULLSCREEN_ENTER */
> +        __u32 spare[7];
> +};
>  #endif

Isn't freesync meant to be a generic non-driver useful thing?

This should be integrated with atomic modesetting API or just the KMS APIs.

Dave.