drm: Add a SET_CLIENT_CAP ioctl
This ioctl can be used to turn some knobs in a DRM driver. The client can ask the DRM core for an alternate view of the reality: it can be useful to be able to instruct the core that the DRM client can handle new functionnality that would otherwise break current ABI. v2: Rename to ioctl from SET_CAP to SET_CLIENT_CAP (Chris Wilson) Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by: Damien Lespiau <damien.lespiau@intel.com> Acked-by: Dave Airlie <airlied@gmail.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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@ -69,6 +69,7 @@ static const struct drm_ioctl_desc drm_ioctls[] = {
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DRM_IOCTL_DEF(DRM_IOCTL_GET_CLIENT, drm_getclient, DRM_UNLOCKED),
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DRM_IOCTL_DEF(DRM_IOCTL_GET_STATS, drm_getstats, DRM_UNLOCKED),
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DRM_IOCTL_DEF(DRM_IOCTL_GET_CAP, drm_getcap, DRM_UNLOCKED|DRM_RENDER_ALLOW),
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DRM_IOCTL_DEF(DRM_IOCTL_SET_CLIENT_CAP, drm_setclientcap, 0),
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DRM_IOCTL_DEF(DRM_IOCTL_SET_VERSION, drm_setversion, DRM_MASTER),
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DRM_IOCTL_DEF(DRM_IOCTL_SET_UNIQUE, drm_setunique, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
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@ -302,6 +302,15 @@ int drm_getcap(struct drm_device *dev, void *data, struct drm_file *file_priv)
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return 0;
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}
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/**
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* Set device/driver capabilities
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*/
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int
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drm_setclientcap(struct drm_device *dev, void *data, struct drm_file *file_priv)
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{
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return -EINVAL;
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}
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/**
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* Setversion ioctl.
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*
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@ -1303,6 +1303,8 @@ extern int drm_getstats(struct drm_device *dev, void *data,
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struct drm_file *file_priv);
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extern int drm_getcap(struct drm_device *dev, void *data,
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struct drm_file *file_priv);
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extern int drm_setclientcap(struct drm_device *dev, void *data,
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struct drm_file *file_priv);
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extern int drm_setversion(struct drm_device *dev, void *data,
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struct drm_file *file_priv);
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extern int drm_noop(struct drm_device *dev, void *data,
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@ -627,6 +627,12 @@ struct drm_get_cap {
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__u64 value;
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};
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/** DRM_IOCTL_SET_CLIENT_CAP ioctl argument type */
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struct drm_set_client_cap {
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__u64 capability;
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__u64 value;
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};
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#define DRM_CLOEXEC O_CLOEXEC
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struct drm_prime_handle {
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__u32 handle;
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@ -659,6 +665,7 @@ struct drm_prime_handle {
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#define DRM_IOCTL_GEM_FLINK DRM_IOWR(0x0a, struct drm_gem_flink)
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#define DRM_IOCTL_GEM_OPEN DRM_IOWR(0x0b, struct drm_gem_open)
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#define DRM_IOCTL_GET_CAP DRM_IOWR(0x0c, struct drm_get_cap)
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#define DRM_IOCTL_SET_CLIENT_CAP DRM_IOW( 0x0d, struct drm_set_client_cap)
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#define DRM_IOCTL_SET_UNIQUE DRM_IOW( 0x10, struct drm_unique)
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#define DRM_IOCTL_AUTH_MAGIC DRM_IOW( 0x11, struct drm_auth)
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