Re: [PATCH v2 1/3] arch: Select fbdev helpers with CONFIG_VIDEO

Hi

Am 28.03.24 um 13:39 schrieb Helge Deller:

On 3/27/24 21:41, Thomas Zimmermann wrote:

quoted

Various Kconfig options selected the per-architecture helpers for
fbdev. But none of the contained code depends on fbdev. Standardize
on CONFIG_VIDEO, which will allow to add more general helpers for
video functionality.

CONFIG_VIDEO protects each architecture's video/ directory.

Your patch in general looks good.
But is renaming the config option from CONFIG_FB_CORE to CONFIG_VIDEO
the best choice?
CONFIG_VIDEO might be mixed up with multimedia/video-streaming.

Why not e.g. CONFIG_GRAPHICS_CORE?
I'm fine with CONFIG_VIDEO as well, but if someone has a better idea
we maybe should go with that instead now?

We already have CONFIG_VIDEO in drivers/video/Kconfig specifically for 
such low-level graphics code. For generic multimedia, we could have 
CONFIG_MEDIA, CONFIG_STREAMING, etc. rather than renaming an established 
Kconfig symbol.

Best regards
Thomas

Helge

quoted

This
allows for the use of more fine-grained control for each directory's
files, such as the use of CONFIG_STI_CORE on parisc.

v2:
- sparc: rebased onto Makefile changes

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Cc: "James E.J. Bottomley" <James.Bottomley@HansenPartnership.com>
Cc: Helge Deller <deller@gmx.de>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Andreas Larsson <andreas@gaisler.com>
Cc: Thomas Gleixner <redacted>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: x86@kernel.org
Cc: "H. Peter Anvin" <hpa@zytor.com>
---
  arch/parisc/Makefile      | 2 +-
  arch/sparc/Makefile       | 4 ++--
  arch/sparc/video/Makefile | 2 +-
  arch/x86/Makefile         | 2 +-
  arch/x86/video/Makefile   | 3 ++-
  5 files changed, 7 insertions(+), 6 deletions(-)

diff --git a/arch/parisc/Makefile b/arch/parisc/Makefile
index 316f84f1d15c8..21b8166a68839 100644
--- a/arch/parisc/Makefile
+++ b/arch/parisc/Makefile

@@ -119,7 +119,7 @@ export LIBGCC

  libs-y    += arch/parisc/lib/ $(LIBGCC)

-drivers-y += arch/parisc/video/
+drivers-$(CONFIG_VIDEO) += arch/parisc/video/

  boot    := arch/parisc/boot

diff --git a/arch/sparc/Makefile b/arch/sparc/Makefile
index 2a03daa68f285..757451c3ea1df 100644
--- a/arch/sparc/Makefile
+++ b/arch/sparc/Makefile

@@ -59,8 +59,8 @@ endif

  libs-y                 += arch/sparc/prom/
  libs-y                 += arch/sparc/lib/

-drivers-$(CONFIG_PM) += arch/sparc/power/
-drivers-$(CONFIG_FB_CORE) += arch/sparc/video/
+drivers-$(CONFIG_PM)    += arch/sparc/power/
+drivers-$(CONFIG_VIDEO) += arch/sparc/video/

  boot := arch/sparc/boot

diff --git a/arch/sparc/video/Makefile b/arch/sparc/video/Makefile
index d4d83f1702c61..9dd82880a027a 100644
--- a/arch/sparc/video/Makefile
+++ b/arch/sparc/video/Makefile

@@ -1,3 +1,3 @@

  # SPDX-License-Identifier: GPL-2.0-only

-obj-$(CONFIG_FB_CORE) += fbdev.o
+obj-y    += fbdev.o

diff --git a/arch/x86/Makefile b/arch/x86/Makefile
index 15a5f4f2ff0aa..c0ea612c62ebe 100644
--- a/arch/x86/Makefile
+++ b/arch/x86/Makefile

@@ -265,7 +265,7 @@ drivers-$(CONFIG_PCI)            += arch/x86/pci/

  # suspend and hibernation support
  drivers-$(CONFIG_PM) += arch/x86/power/

-drivers-$(CONFIG_FB_CORE) += arch/x86/video/
+drivers-$(CONFIG_VIDEO) += arch/x86/video/

  ####
  # boot loader support. Several targets are kept for legacy purposes

diff --git a/arch/x86/video/Makefile b/arch/x86/video/Makefile
index 5ebe48752ffc4..9dd82880a027a 100644
--- a/arch/x86/video/Makefile
+++ b/arch/x86/video/Makefile

@@ -1,2 +1,3 @@

  # SPDX-License-Identifier: GPL-2.0-only
-obj-$(CONFIG_FB_CORE)        += fbdev.o
+
+obj-y    += fbdev.o

-- 
--
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Frankenstrasse 146, 90461 Nuernberg, Germany
GF: Ivo Totev, Andrew Myers, Andrew McDonald, Boudien Moerman
HRB 36809 (AG Nuernberg)