drm: Set CONFIG_ACPI in linux/acpi.h and make it build.

Leave a little ACPI-related functionality disabled for now, like
getting EDID out of ACPI -- needs a bit more work to make this work,
and I don't have hardware to work on that.

Should help with failures of the forms:

- unable to locate a BIOS ROM
- bios: unable to locate usable image

on various machines.

adapt to ${CC_WNO_MAYBE_UNINITIALIZED}

Use ${CC_WNO_MAYBE_UNINITIALIZED} instead of
the older style more complex expressions.

Remove workarounds if they were for a specific
version of gcc < 10.

adapt to ${CC_WNO_IMPLICIT_FALLTHROUGH}

Use ${CC_WNO_IMPLICIT_FALLTHROUGH} instead of
the older style more complex expressions.

branches: 1.37.4;
drm: Propagate CPPFLAGS.drmkms into all the drm drivers.

files.radeon: add clang -Wno-format for radeon_uvd.c

int vs. short mismatch in UVD firmware version printf.
Also change some makeoptions conditional copypasta i915drmkms -> radeon.

Revert part of previous: no separate CPPFLAGS.drmkms.

There are too many drms users outside sys/external/bsd/drm2 for now;
will hold off on this until we find a better way to keep the drm
includes modularized.

Narrow the CPPFLAGS for drm subsystems.

No need for the whole kernel to be built with -I flags for the drm
header files.

Merge updated radeon2netbsd output.

Define CONFIG_AGP=1 early in radeon.

Disable *_trace_points.c.

I accidentally deleted these in the import, because the *_trace.h
files got in the way and I forgot the *_trace_points.c files were
fine.

There's nothing important in them anyway, so nothing of value is
lost. Maybe next time I will remember to delete the *_trace.h files
on import but not the *_trace_points.c to reduce diffs, but that's
too much trouble at this point.

Generate files.* using the 2netbsd scripts.


Author: Maya Rashish <maya@NetBSD.org>

drm2: build with -fwrapv, since the Linux kernel does and we don't
want to spend too much time fixing their code. silences a lot of
KUBSAN warnings.

we need to use COPTS to have per-option compiler flags. help from
Riastradh.

branches: 1.28.10; 1.28.14;
Eliminate -Wpointer-arith patches; use -Wno-pointer-arith instead.

branches: 1.27.2;
convert HAVE_GCC == 7 to HAVE_GCC >= 7.

radeondrmkmsfb now requires drmfb and drmfb_pci.

add -Wno-error=int-in-bool-context or -Wno-error=implicit-fallthrough
for various drm files that would be best ignored or upstream fixed.
(could fix savagedrm, no one upstream is that any more.)

Fix merge botch

Merge the [pgoyette-compat] branch

Appease GCC with a kernel sanitizer

Add -Wno-maybe-uninitialized for radeon, a compiler warning is triggered
by a false positive.

Tag files.* with newer config version where needed.

Draft support for drm prime.

Prefix radeon .c files with `radeon_'.

Disable radeon_acpi.c for now.

Need to figure out how to get AC adapter events and stuff to us.

Fix radeon include order.

radeon wants amd includes.

regen files.radeon

Replace per-file warning options in radeon by radeon-wide options.

Move autogenerated files from dist/ to end of files.radeon.

branches: 1.12.18; 1.12.20;
trinity_dpm.c needs -Wno-unused-const-variable.

si_dpm.c needs -Wno-unused-const-variable.

rv770_dpm.c needs -Wno-missing-field-initializers.

Spell -Wno-missing-prototypes correctly.

-Wno-unused-const-variable for radeon kv_dpm.c.

Suppress some more missing field initializer warnings from Clang.

Suppress clang warning about `= {0}'.

branches: 1.5.2; 1.5.4; 1.5.6;
radeon depends on firmload.

Noted by rjs@.

Rename radeondrmkms to just plain radeon.

radeondrmkmsfb will stay as is until the name radeonfb is available
(currently taken by legacy dev/pci/radeonfb.c).

Hook up radeondrmkmsfb code.

Builds, not testable yet.

Push -Wno-missing-prototypes into specific radeon source files.

Don't apply it willy-nilly to the whole kernel!

First whack at radeon driver.

No hardware to test yet, but it builds.