media: saa7134: drop overlay support

Browse source

Destructive overlay support (i.e. where the video frame is DMA-ed
straight into a framebuffer) is effectively dead. It was a
necessary evil in the early days when computers were not fast enough
to copy SDTV video frames around, but today that's no longer a problem.

It requires access to the framebuffer memory, which is a bad idea and
very hard to do safely. In addition, in drm it is today almost
impossible to get hold of the framebuffer address.

So drop support for this.

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

...

This commit is contained in:

Hans Verkuil 2023-03-02 13:57:24 +01:00 • committed by Mauro Carvalho Chehab

parent 7777694f80

commit 50a5677d53

4 changed files with 4 additions and 453 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

1

drivers/media/pci/saa7134/saa7134-cards.c

View file

32

drivers/media/pci/saa7134/saa7134-core.c

View file

411

drivers/media/pci/saa7134/saa7134-video.c

View file

13

drivers/media/pci/saa7134/saa7134.h

View file