[PATCH 5.10.y 1/2] media: v4l2-ctrls: split up into four source files

[Sasha Levin <sashal@kernel.org>]

From: Hans Verkuil <hverkuil-cisco@xs4all.nl>

[ Upstream commit 71c689dc2e732d4cb190aaf0edea73116b1611bd ]

The v4l2-ctrls.c source has become much too big, so split it up
into four separate parts:

v4l2-ctrls-core.c: contains the core framework code
v4l2-ctrls-api.c: contains the uAPI interface to the framework
v4l2-ctrls-defs.c: contains the control definitions
v4l2-ctrls-request.c: contains the Request API helpers

And it adds a new v4l2-ctrls-priv.h.

No code was changed, but a number of checkpatch.pl warnings were
fixed (alignment, f == NULL -> !f, long comment block coding style,
unsigned -> unsigned int).

The copyright statements were updated as well since they were
quite out of date.

Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

[5.10 dependency adaptation for dc694a9929f7]

Limit this dependency to renaming the existing stable v4l2-ctrls.c to
v4l2-ctrls-core.c and updating its object name in the Makefile. Preserve
the source contents byte for byte, including all stable fixes, and keep
v4l2-clk.o in the videodev object list. No functions are added or changed.

The target's HEVC PPS validation context already exists in this stable
source; only the upstream filename is needed for the target to apply.
Drop the remaining source split, private header, and documentation hunk:
those changes are unnecessary for the target, and the documentation file
is absent from this branch. The original subject is retained as required.

[ sashal: Reduced backport -- upstream 71c689dc2e732 touches 8 file(s), this
  backport carries 2. Not backported here:
  Documentation/userspace-api/media/v4l/ext-ctrls-codec-stateless.rst
  drivers/media/v4l2-core/v4l2-ctrls-api.c
  drivers/media/v4l2-core/v4l2-ctrls.c
  drivers/media/v4l2-core/v4l2-ctrls-defs.c
  drivers/media/v4l2-core/v4l2-ctrls-priv.h
  drivers/media/v4l2-core/v4l2-ctrls-request.c
  This note is generated from the file lists only; see the resolution record
  for the reasoning. ]

Stable-dep-of: dc694a9929f7 ("media: v4l2-ctrls: validate HEVC tile counts")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/media/v4l2-core/Makefile                            | 2 +-
 drivers/media/v4l2-core/{v4l2-ctrls.c => v4l2-ctrls-core.c} | 0
 2 files changed, 1 insertion(+), 1 deletion(-)
 rename drivers/media/v4l2-core/{v4l2-ctrls.c => v4l2-ctrls-core.c} (100%)

diff --git a/drivers/media/v4l2-core/Makefile b/drivers/media/v4l2-core/Makefile
index 2ef0c7c958a24..a9926ef97db38 100644
--- a/drivers/media/v4l2-core/Makefile
+++ b/drivers/media/v4l2-core/Makefile
@@ -6,7 +6,7 @@
 tuner-objs	:=	tuner-core.o
 
 videodev-objs	:=	v4l2-dev.o v4l2-ioctl.o v4l2-device.o v4l2-fh.o \
-			v4l2-event.o v4l2-ctrls.o v4l2-subdev.o v4l2-clk.o \
+			v4l2-event.o v4l2-ctrls-core.o v4l2-subdev.o v4l2-clk.o \
 			v4l2-async.o v4l2-common.o
 videodev-$(CONFIG_COMPAT) += v4l2-compat-ioctl32.o
 videodev-$(CONFIG_TRACEPOINTS) += v4l2-trace.o
diff --git a/drivers/media/v4l2-core/v4l2-ctrls.c b/drivers/media/v4l2-core/v4l2-ctrls-core.c
similarity index 100%
rename from drivers/media/v4l2-core/v4l2-ctrls.c
rename to drivers/media/v4l2-core/v4l2-ctrls-core.c
-- 
2.53.0