Commit 1c0814fe authored by Damien Lespiau's avatar Damien Lespiau Committed by Daniel Vetter
Browse files

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: default avatarVille Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: default avatarDamien Lespiau <damien.lespiau@intel.com>
Acked-by: default avatarDave Airlie <airlied@gmail.com>
Signed-off-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
parent a99b57db

drivers/gpu/drm/drm_drv.c

+1 −0
Original line number Diff line number Diff line
@@ -69,6 +69,7 @@ static const struct drm_ioctl_desc drm_ioctls[] = { 
	DRM_IOCTL_DEF(DRM_IOCTL_GET_CLIENT, drm_getclient, DRM_UNLOCKED),

	DRM_IOCTL_DEF(DRM_IOCTL_GET_STATS, drm_getstats, DRM_UNLOCKED),

	DRM_IOCTL_DEF(DRM_IOCTL_GET_CAP, drm_getcap, DRM_UNLOCKED|DRM_RENDER_ALLOW),

	DRM_IOCTL_DEF(DRM_IOCTL_SET_CLIENT_CAP, drm_setclientcap, 0),

	DRM_IOCTL_DEF(DRM_IOCTL_SET_VERSION, drm_setversion, DRM_MASTER),



	DRM_IOCTL_DEF(DRM_IOCTL_SET_UNIQUE, drm_setunique, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),

drivers/gpu/drm/drm_ioctl.c

+9 −0
Original line number Diff line number Diff line
@@ -302,6 +302,15 @@ int drm_getcap(struct drm_device *dev, void *data, struct drm_file *file_priv) 
	return 0;

}



/**

 * Set device/driver capabilities

 */

int

drm_setclientcap(struct drm_device *dev, void *data, struct drm_file *file_priv)

{

	return -EINVAL;

}



/**

 * Setversion ioctl.

 *

include/drm/drmP.h

+2 −0
Original line number Diff line number Diff line
@@ -1303,6 +1303,8 @@ extern int drm_getstats(struct drm_device *dev, void *data, 
			struct drm_file *file_priv);

extern int drm_getcap(struct drm_device *dev, void *data,

		      struct drm_file *file_priv);

extern int drm_setclientcap(struct drm_device *dev, void *data,

			    struct drm_file *file_priv);

extern int drm_setversion(struct drm_device *dev, void *data,

			  struct drm_file *file_priv);

extern int drm_noop(struct drm_device *dev, void *data,

include/uapi/drm/drm.h

+7 −0
Original line number Diff line number Diff line
@@ -627,6 +627,12 @@ struct drm_get_cap { 
	__u64 value;

};



/** DRM_IOCTL_SET_CLIENT_CAP ioctl argument type */

struct drm_set_client_cap {

	__u64 capability;

	__u64 value;

};



#define DRM_CLOEXEC O_CLOEXEC

struct drm_prime_handle {

	__u32 handle;
@@ -659,6 +665,7 @@ struct drm_prime_handle { 
#define DRM_IOCTL_GEM_FLINK		DRM_IOWR(0x0a, struct drm_gem_flink)

#define DRM_IOCTL_GEM_OPEN		DRM_IOWR(0x0b, struct drm_gem_open)

#define DRM_IOCTL_GET_CAP		DRM_IOWR(0x0c, struct drm_get_cap)

#define DRM_IOCTL_SET_CLIENT_CAP	DRM_IOW( 0x0d, struct drm_set_client_cap)



#define DRM_IOCTL_SET_UNIQUE		DRM_IOW( 0x10, struct drm_unique)

#define DRM_IOCTL_AUTH_MAGIC		DRM_IOW( 0x11, struct drm_auth)

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