Now that we have core atomic helpers, let's expose that to userspace!
The first step here is to, for drivers supporting atomic, expose all
the core plane/CRTC/connector state as properties. Once this is in
place, all that remains is the atomic ioctl to allow userspace to
atomically set a bunch of properties on a bunch of objects (RFC patch
at the end).
All of the core properties have their set/get/check's handled by the
drm_atomic core, so drivers needn't be bothered about that.
NOTE: that there is one notable omission here. The 'MODE' property
on the CRTC. Without this, you can do atomic pageflip but not yet
atomic modeset. I am debating between three paths for handling MODE:
1) Add back blob property support to atomic ioctl
2) Add ioctls to create/destroy blob properties, and then simply
pass blob property id to atomic ioctl.
3) Stick our head in the sands and expose mode as a bunch of descrete
properties.
Of these, at the moment I prefer #2, since it is more consistent with
how userspace currently reads blob properties, and it avoids making the
atomic ioctl function even more gnarly.
The whole patchset can also be found at:
http://cgit.freedesktop.org/~robclark/linux/log/?h=atomic-properties
git://people.freedesktop.org/~robclark/linux atomic-properties
Rob Clark (13):
drm: allow property validation for refcnted props
drm: store property instead of id in obj attachment
drm: get rid of direct property value access
drm: add atomic_set_property wrappers
drm: add atomic_get_property
drm: add atomic hook to read property plus helper
drm: small property creation cleanup
drm: tweak getconnector locking
drm/atomic: atomic_check functions
drm/atomic: atomic plane properties
drm/atomic: atomic connector properties
drm/msm: atomic property support
RFC: drm: Atomic modeset ioctl
Documentation/DocBook/drm.tmpl | 83 ++-
drivers/gpu/drm/drm_atomic.c | 613 +++++++++++++++++++++
drivers/gpu/drm/drm_atomic_helper.c | 105 +++-
drivers/gpu/drm/drm_crtc.c | 230 ++++++--
drivers/gpu/drm/drm_ioctl.c | 1 +
drivers/gpu/drm/msm/hdmi/hdmi_connector.c | 1 +
drivers/gpu/drm/msm/mdp/mdp4/mdp4_crtc.c | 1 +
drivers/gpu/drm/msm/mdp/mdp4/mdp4_lvds_connector.c | 1 +
drivers/gpu/drm/msm/mdp/mdp4/mdp4_plane.c | 1 +
drivers/gpu/drm/msm/mdp/mdp5/mdp5_crtc.c | 1 +
drivers/gpu/drm/msm/mdp/mdp5/mdp5_plane.c | 2 +
drivers/gpu/drm/msm/msm_drv.c | 1 +
include/drm/drm_atomic.h | 22 +
include/drm/drm_atomic_helper.h | 2 +
include/drm/drm_crtc.h | 50 +-
include/uapi/drm/drm.h | 1 +
include/uapi/drm/drm_mode.h | 21 +
17 files changed, 1063 insertions(+), 73 deletions(-)
--
2.1.0
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