1b38cf6b03
Despite being an atomic driver, nouveau has a lot of leftover code that relies on retrieving information regarding the new atomic state from members of drm_encoder and drm_crtc. The first field being used, drm_encoder.crtc, is deprecated for atomic drivers. The second field being used is drm_crtc.state, which is only really sensible to use outside of an atomic modeset. So, add some helpers to lookup the current crtc for a given outp from the atomic state. Then, convert most of the code in dispnv50/disp.c to use said new helper, along with the relevant DRM atomic helpers for retrieving the new encoder/crtc combinations for a new atomic state. Note that we don't get rid of the nouveau_encoder.crtc field entirely for three reasons: - Legacy modesetting for pre-nv50 still uses it - It doesn't cause any locking issues - We need it for the HDA callbacks, as grabbing atomic modesetting locks in those would be a mess. Signed-off-by: Lyude Paul <lyude@redhat.com> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
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https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.