drm/nouveau/disp: expose head event class

Also fixes vblank interrupts being left enabled when they're not meant
to be as a result of races/bugs in previous event handling code.

v2:
- use ?: (lyude)

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Reviewed-by: Lyude Paul <lyude@redhat.com>

drm/nouveau/disp: add head class

v2: remove extra whitespace

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Reviewed-by: Lyude Paul <lyude@redhat.com>

drm/nouveau: drop drmP.h from all header files

Drop include of the deprecated drmP.h from all nouveau heder files.
This allows us to remove drmP.h from all .c files without any
side-effects in a follow-up commit.

Build tested using allyeyconfig and allmodconfig

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Ben Skeggs <bskeggs@redhat.com>
Cc: nouveau@lists.freedesktop.org
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nouveau/kms/nv50: prepare for double-buffered LUTs

We need to double-buffer LUTs to handle their update atomically.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm: nouveau: remove dead code and pointless local lut storage

The redundant fb helpers .load_lut, .gamma_set and .gamma_get are
no longer used. Remove the dead code and hook up the crtc .gamma_set
to use the crtc gamma_store directly instead of duplicating that
info locally.

Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Peter Rosin <peda@axentia.se>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20170713162538.22788-12-peda@axentia.se

drm/nouveau/kms/nv50: remove code to support non-atomic connector properties

Made completely unreachable by atomic commits.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nouveau/kms/nv50: separate out cursor surface commit

This commit separates the calculation of EVO state from the commit, in
order to make the same code useful for atomic modesetting.

The legacy interfaces have been wrapped on top of them.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nouveau/kms: subclass atomic connector state

This commit implements the atomic property hooks for a connector, and
wraps the legacy interface handling on top of those.

For the moment, a full modeset will be done after any property change
in order to ease subsequent changes. The optimised behaviour will be
restored for Tesla and later (earlier boards always do full modesets)
once atomic commits are implemented.

Some functions are put under the "nouveau_conn" namespace now, rather
than "nouveau_connector", to distinguish functions that will work for
(upcoming) MST connectors too.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nouveau: Use private save/restore hooks for CRTCs

I want to remove the core ones since with atomic drivers system
suspend/resume is solved much differently. And there's only 2 drivers
(gma500 besides nouveau) really using them.

v2: Fixup bugs Ilia spotted.

Cc: Ben Skeggs <bskeggs@redhat.com>
Cc: Ilia Mirkin <imirkin@alum.mit.edu>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1449245618-1127-1-git-send-email-daniel.vetter@ffwll.ch
Reviewed-by: Thierry Reding <treding@nvidia.com>

drm/nouveau/disp: implement nvif event sources for vblank/connector notifiers

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nouveau/core: rework event interface

This is a lot of prep-work for being able to send event notifications
back to userspace. Events now contain data, rather than a "something
just happened" signal.

Handler data is now embedded into a containing structure, rather than
being kmalloc()'d, and can optionally have the notify routine handled
in a workqueue.

Various races between suspend/unload with display HPD/DP IRQ handlers
automagically solved as a result.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nouveau: store vblank event handler data in nv_crtc

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nv50/kms: create ctxdma objects for framebuffers as required

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nv50-: prepare for attaching a SOR to multiple heads

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nouveau: rename nvd0_display to nv50_display to reflect reality since merge

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nv50-nvc0: switch to common disp impl, removing previous version

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nv50/display: expose color vibrance control

Signed-off-by: Christoph Bumiller <e0425955@student.tuwien.ac.at>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nouveau/disp: kill off nouveau_crtc.mode

This hasn't been necessary for a long time now..

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nouveau: no need to pass parameters into set_scale/dither

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nouveau: make general drm modesetting init common

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nouveau: allow cursor image and position to survive suspend

- This isn't triggered yet on a normal kernel, because it still does a VT
switch, but it seemed like a good idea to fix this now.

Tested-by: Maxim Levitsky <maximlevitsky@gmail.com>
Signed-off-by: Maarten Maathuis <madman2003@gmail.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nouveau: Add DRM driver for NVIDIA GPUs

This adds a drm/kms staging non-API stable driver for GPUs from NVIDIA.

This driver is a KMS-based driver and requires a compatible nouveau
userspace libdrm and nouveau X.org driver.

This driver requires firmware files not available in this kernel tree,
interested parties can find them via the nouveau project git archive.

This driver is reverse engineered, and is in no way supported by nVidia.

Support for nearly the complete range of nvidia hw from nv04->g80 (nv50)
is available, and the kms driver should support driving nearly all
output types (displayport is under development still) along with supporting
suspend/resume.

This work is all from the upstream nouveau project found at
nouveau.freedesktop.org.

The original authors list from nouveau git tree is:
Anssi Hannula <anssi.hannula@iki.fi>
Ben Skeggs <bskeggs@redhat.com>
Francisco Jerez <currojerez@riseup.net>
Maarten Maathuis <madman2003@gmail.com>
Marcin Kościelnicki <koriakin@0x04.net>
Matthew Garrett <mjg@redhat.com>
Matt Parnell <mparnell@gmail.com>
Patrice Mandin <patmandin@gmail.com>
Pekka Paalanen <pq@iki.fi>
Xavier Chantry <shiningxc@gmail.com>
along with project founder Stephane Marchesin <marchesin@icps.u-strasbg.fr>

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>