This patchset is the merging of Ville's atomic modeset ioctl, and the drm_{crtc,plane}_state stuff from my original nuclear pageflip RFC.
It is currently working on msm with an updated version of Ville's glplane test app (removing cursor properties and atomic event):
https://github.com/robclark/glplane
the libdrm bits can be found here:
https://github.com/robclark/libdrm/commits/atomic
The msm part is on top of msm-next, the complete branch can be found:
http://cgit.freedesktop.org/~robclark/linux/log/?h=global-thermonuclear-war-...
Compared to my earlier nuclear pageflip RFC, there is now a set of drm_atomic helpers which do most of the non-hw-specific work for the different drivers.
Unlike the crtc helpers, it is intended that the atomic helpers can be used piecemeal by the drivers, either using all or overriding parts as needed.
A naive driver, with no special constraints or hw support for atomic updates may simply add the following to their driver struct:
.atomic_begin = drm_atomic_helper_begin, .atomic_set_event = drm_atomic_helper_set_event, .atomic_check = drm_atomic_helper_check, .atomic_commit = drm_atomic_helper_commit, .atomic_end = drm_atomic_helper_end, .atomic_helpers = &drm_atomic_helper_funcs,
In addition, if you're plane/crtc doesn't already have it's own custom properties, then add to your plane/crtc_funcs:
.set_property = drm_atomic_helper_{plane,crtc}_set_property,
A driver which can have (for example) conflicting modes across multiple crtcs (for example, bandwidth limitations or clock/pll configuration restrictions), can wrap drm_atomic_helper_check() with their own driver specific .atomic_check() function.
A driver which can support true atomic updates can wrap drm_atomic_helper_commit().
A driver with custom properties should override the appropriate get_state(), check_state(), and commit_state() functions in .atomic_helpers if it uses the drm-atomic-helpers. Otherwise it is free to use &drm_atomic_helper_funcs as-is.
TODO:
* revisit fb refcnting.. it currently works but likely would have problems if userspace set fb_id property on an object multiple times in an atomic ioctl, which would be solved if the state object also held a ref to the fb * convert locking to ww_mutex? I was initially hoping to get by without this, but I'm starting to suspect that it will make the locking easier to get correct * fix drivers with custom plane or crtc properties
Rob Clark (10): HACK: disable drm for M68K.. no 8 byte get_user() drm: add atomic fxns drm: add object property type drm: add DRM_MODE_PROP_DYNAMIC property flag drm: add DRM_MODE_PROP_SIGNED property flag drm: helpers to find mode objects drm: split propvals out and blob property support drm: convert plane to properties/state drm: convert crtc to properties/state drm/msm: add atomic support
Ville Syrjälä (3): drm: Allow drm_mode_object_find() to look up an object of any type drm: Refactor object property check code drm: Atomic modeset ioctl
drivers/gpu/drm/Kconfig | 2 + drivers/gpu/drm/Makefile | 3 +- drivers/gpu/drm/ast/ast_drv.c | 6 + drivers/gpu/drm/ast/ast_drv.h | 1 + drivers/gpu/drm/ast/ast_mode.c | 1 + drivers/gpu/drm/cirrus/cirrus_drv.c | 6 + drivers/gpu/drm/cirrus/cirrus_drv.h | 1 + drivers/gpu/drm/cirrus/cirrus_mode.c | 1 + drivers/gpu/drm/drm_atomic_helper.c | 515 +++++++++++ drivers/gpu/drm/drm_crtc.c | 1243 ++++++++++++++++++--------- drivers/gpu/drm/drm_drv.c | 1 + drivers/gpu/drm/drm_fb_helper.c | 20 +- drivers/gpu/drm/exynos/exynos_drm_crtc.c | 13 +- drivers/gpu/drm/exynos/exynos_drm_drv.c | 7 + drivers/gpu/drm/exynos/exynos_drm_encoder.c | 6 +- drivers/gpu/drm/exynos/exynos_drm_plane.c | 17 +- drivers/gpu/drm/gma500/cdv_intel_crt.c | 4 +- drivers/gpu/drm/gma500/cdv_intel_display.c | 1 + drivers/gpu/drm/gma500/cdv_intel_dp.c | 7 +- drivers/gpu/drm/gma500/cdv_intel_hdmi.c | 7 +- drivers/gpu/drm/gma500/cdv_intel_lvds.c | 10 +- drivers/gpu/drm/gma500/mdfld_dsi_output.c | 12 +- drivers/gpu/drm/gma500/psb_drv.c | 7 + drivers/gpu/drm/gma500/psb_drv.h | 1 + drivers/gpu/drm/gma500/psb_intel_display.c | 1 + drivers/gpu/drm/gma500/psb_intel_drv.h | 4 +- drivers/gpu/drm/gma500/psb_intel_lvds.c | 10 +- drivers/gpu/drm/gma500/psb_intel_sdvo.c | 23 +- drivers/gpu/drm/i2c/ch7006_drv.c | 4 +- drivers/gpu/drm/i915/i915_drv.c | 8 + drivers/gpu/drm/i915/intel_crt.c | 4 +- drivers/gpu/drm/i915/intel_display.c | 4 +- drivers/gpu/drm/i915/intel_dp.c | 7 +- drivers/gpu/drm/i915/intel_drv.h | 1 + drivers/gpu/drm/i915/intel_hdmi.c | 7 +- drivers/gpu/drm/i915/intel_lvds.c | 4 +- drivers/gpu/drm/i915/intel_sdvo.c | 23 +- drivers/gpu/drm/i915/intel_sprite.c | 19 +- drivers/gpu/drm/i915/intel_tv.c | 11 +- drivers/gpu/drm/mgag200/mgag200_drv.c | 7 + drivers/gpu/drm/mgag200/mgag200_drv.h | 1 + drivers/gpu/drm/mgag200/mgag200_mode.c | 1 + drivers/gpu/drm/msm/Makefile | 1 + drivers/gpu/drm/msm/mdp4/mdp4_crtc.c | 52 +- drivers/gpu/drm/msm/mdp4/mdp4_kms.c | 6 + drivers/gpu/drm/msm/mdp4/mdp4_kms.h | 1 + drivers/gpu/drm/msm/mdp4/mdp4_plane.c | 22 +- drivers/gpu/drm/msm/msm_atomic.c | 146 ++++ drivers/gpu/drm/msm/msm_drv.c | 26 + drivers/gpu/drm/msm/msm_drv.h | 9 + drivers/gpu/drm/msm/msm_gem.c | 24 +- drivers/gpu/drm/msm/msm_gem.h | 13 + drivers/gpu/drm/nouveau/dispnv04/crtc.c | 1 + drivers/gpu/drm/nouveau/dispnv04/tvnv17.c | 3 +- drivers/gpu/drm/nouveau/nouveau_connector.c | 7 +- drivers/gpu/drm/nouveau/nouveau_drm.c | 7 + drivers/gpu/drm/nouveau/nouveau_drm.h | 1 + drivers/gpu/drm/nouveau/nv50_display.c | 1 + drivers/gpu/drm/omapdrm/omap_crtc.c | 18 +- drivers/gpu/drm/omapdrm/omap_drv.c | 12 +- drivers/gpu/drm/omapdrm/omap_drv.h | 5 +- drivers/gpu/drm/omapdrm/omap_plane.c | 34 +- drivers/gpu/drm/qxl/qxl_display.c | 6 +- drivers/gpu/drm/qxl/qxl_drv.c | 9 + drivers/gpu/drm/radeon/radeon_connectors.c | 9 +- drivers/gpu/drm/radeon/radeon_display.c | 2 + drivers/gpu/drm/radeon/radeon_drv.c | 9 + drivers/gpu/drm/rcar-du/rcar_du_crtc.c | 2 + drivers/gpu/drm/rcar-du/rcar_du_drv.c | 7 + drivers/gpu/drm/rcar-du/rcar_du_lvdscon.c | 3 +- drivers/gpu/drm/rcar-du/rcar_du_plane.c | 9 +- drivers/gpu/drm/rcar-du/rcar_du_vgacon.c | 3 +- drivers/gpu/drm/shmobile/shmob_drm_crtc.c | 8 +- drivers/gpu/drm/shmobile/shmob_drm_drv.c | 7 + drivers/gpu/drm/shmobile/shmob_drm_plane.c | 6 +- drivers/gpu/drm/tilcdc/tilcdc_crtc.c | 1 + drivers/gpu/drm/tilcdc/tilcdc_drv.c | 6 + drivers/gpu/drm/tilcdc/tilcdc_drv.h | 1 + drivers/gpu/drm/tilcdc/tilcdc_slave.c | 3 +- drivers/gpu/drm/udl/udl_connector.c | 6 +- drivers/gpu/drm/udl/udl_drv.c | 8 + drivers/gpu/drm/udl/udl_modeset.c | 2 + drivers/gpu/drm/vmwgfx/vmwgfx_drv.c | 7 + drivers/gpu/drm/vmwgfx/vmwgfx_drv.h | 1 + drivers/gpu/drm/vmwgfx/vmwgfx_kms.c | 4 +- drivers/gpu/drm/vmwgfx/vmwgfx_kms.h | 4 +- drivers/gpu/drm/vmwgfx/vmwgfx_ldu.c | 1 + drivers/gpu/drm/vmwgfx/vmwgfx_scrn.c | 1 + drivers/gpu/host1x/drm/dc.c | 17 +- drivers/gpu/host1x/drm/drm.c | 7 + drivers/gpu/host1x/drm/drm.h | 1 + drivers/staging/imx-drm/imx-drm-core.c | 8 + drivers/staging/imx-drm/ipuv3-crtc.c | 1 + include/drm/drmP.h | 83 ++ include/drm/drm_atomic_helper.h | 172 ++++ include/drm/drm_crtc.h | 248 +++++- include/uapi/drm/drm.h | 12 + include/uapi/drm/drm_mode.h | 34 + 98 files changed, 2521 insertions(+), 607 deletions(-) create mode 100644 drivers/gpu/drm/drm_atomic_helper.c create mode 100644 drivers/gpu/drm/msm/msm_atomic.c create mode 100644 include/drm/drm_atomic_helper.h