Re: [PATCH 37/59] drm/cirrus: Move to drm/tiny

Daniel Vetter
2020-04-15T08:19:58Z

On Wed, Apr 15, 2020 at 10:01 AM Thomas Zimmermann <tzimmermann@suse.de> wrote:
>
>
>
> Am 15.04.20 um 09:40 schrieb Daniel Vetter:
> > Because it is. Huge congrats to everyone who made this kind of
> > refactoring happen!
>
> Every other week, I felt an urge to send out this patch. Thank you so
> much, Daniel! There are more candidates for tiny/. They are all <20k
> LOCs and all we'd have to do is to move their code into a single file.
> bochs or arc come into my mind.

arc I have (later in the series), bochs I feel like is maybe a bit too
big. I'd put the limit for tiny well below 1kloc including whitespace
and all that. bochs might be a candidate once we've helperized a few
more things perhaps.

btw I drmm_ version of vram helpers would help a bunch of these drivers I think.
-Daniel

>
> >
> > Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
> > Cc: Dave Airlie <airlied@redhat.com>
> > Cc: Gerd Hoffmann <kraxel@redhat.com>
> > Cc: virtualization@lists.linux-foundation.org
>
> Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
>
> > ---
> > MAINTAINERS | 2 +-
> > drivers/gpu/drm/Kconfig | 2 --
> > drivers/gpu/drm/Makefile | 1 -
> > drivers/gpu/drm/cirrus/Kconfig | 19 -------------------
> > drivers/gpu/drm/cirrus/Makefile | 2 --
> > drivers/gpu/drm/tiny/Kconfig | 19 +++++++++++++++++++
> > drivers/gpu/drm/tiny/Makefile | 1 +
> > drivers/gpu/drm/{cirrus => tiny}/cirrus.c | 0
> > 8 files changed, 21 insertions(+), 25 deletions(-)
> > delete mode 100644 drivers/gpu/drm/cirrus/Kconfig
> > delete mode 100644 drivers/gpu/drm/cirrus/Makefile
> > rename drivers/gpu/drm/{cirrus => tiny}/cirrus.c (100%)
> >
> > diff --git a/MAINTAINERS b/MAINTAINERS
> > index 7b3255d96d1d..0a5cf105ee37 100644
> > --- a/MAINTAINERS
> > +++ b/MAINTAINERS
> > @@ -5397,7 +5397,7 @@ L: virtualization@lists.linux-foundation.org
> > S: Obsolete
> > W: https://www.kraxel.org/blog/2014/10/qemu-using-cirrus-considered-harmful/
> > T: git git://anongit.freedesktop.org/drm/drm-misc
> > -F: drivers/gpu/drm/cirrus/
> > +F: drivers/gpu/drm/tiny/cirrus.c
> >
> > DRM DRIVER FOR QXL VIRTUAL GPU
> > M: Dave Airlie <airlied@redhat.com>
> > diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig
> > index 43594978958e..4f4e7fa001c1 100644
> > --- a/drivers/gpu/drm/Kconfig
> > +++ b/drivers/gpu/drm/Kconfig
> > @@ -310,8 +310,6 @@ source "drivers/gpu/drm/ast/Kconfig"
> >
> > source "drivers/gpu/drm/mgag200/Kconfig"
> >
> > -source "drivers/gpu/drm/cirrus/Kconfig"
> > -
> > source "drivers/gpu/drm/armada/Kconfig"
> >
> > source "drivers/gpu/drm/atmel-hlcdc/Kconfig"
> > diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile
> > index f34d08c83485..2c0e5a7e5953 100644
> > --- a/drivers/gpu/drm/Makefile
> > +++ b/drivers/gpu/drm/Makefile
> > @@ -74,7 +74,6 @@ obj-$(CONFIG_DRM_I915) += i915/
> > obj-$(CONFIG_DRM_MGAG200) += mgag200/
> > obj-$(CONFIG_DRM_V3D) += v3d/
> > obj-$(CONFIG_DRM_VC4) += vc4/
> > -obj-$(CONFIG_DRM_CIRRUS_QEMU) += cirrus/
> > obj-$(CONFIG_DRM_SIS) += sis/
> > obj-$(CONFIG_DRM_SAVAGE)+= savage/
> > obj-$(CONFIG_DRM_VMWGFX)+= vmwgfx/
> > diff --git a/drivers/gpu/drm/cirrus/Kconfig b/drivers/gpu/drm/cirrus/Kconfig
> > deleted file mode 100644
> > index c6bbd988b0e5..000000000000
> > --- a/drivers/gpu/drm/cirrus/Kconfig
> > +++ /dev/null
> > @@ -1,19 +0,0 @@
> > -# SPDX-License-Identifier: GPL-2.0-only
> > -config DRM_CIRRUS_QEMU
> > - tristate "Cirrus driver for QEMU emulated device"
> > - depends on DRM && PCI && MMU
> > - select DRM_KMS_HELPER
> > - select DRM_GEM_SHMEM_HELPER
> > - help
> > - This is a KMS driver for emulated cirrus device in qemu.
> > - It is *NOT* intended for real cirrus devices. This requires
> > - the modesetting userspace X.org driver.
> > -
> > - Cirrus is obsolete, the hardware was designed in the 90ies
> > - and can't keep up with todays needs. More background:
> > - https://www.kraxel.org/blog/2014/10/qemu-using-cirrus-considered-harmful/
> > -
> > - Better alternatives are:
> > - - stdvga (DRM_BOCHS, qemu -vga std, default in qemu 2.2+)
> > - - qxl (DRM_QXL, qemu -vga qxl, works best with spice)
> > - - virtio (DRM_VIRTIO_GPU), qemu -vga virtio)
> > diff --git a/drivers/gpu/drm/cirrus/Makefile b/drivers/gpu/drm/cirrus/Makefile
> > deleted file mode 100644
> > index 0c1ed3f99725..000000000000
> > --- a/drivers/gpu/drm/cirrus/Makefile
> > +++ /dev/null
> > @@ -1,2 +0,0 @@
> > -# SPDX-License-Identifier: GPL-2.0-only
> > -obj-$(CONFIG_DRM_CIRRUS_QEMU) += cirrus.o
> > diff --git a/drivers/gpu/drm/tiny/Kconfig b/drivers/gpu/drm/tiny/Kconfig
> > index 4160e74e4751..2b6414f0fa75 100644
> > --- a/drivers/gpu/drm/tiny/Kconfig
> > +++ b/drivers/gpu/drm/tiny/Kconfig
> > @@ -1,5 +1,24 @@
> > # SPDX-License-Identifier: GPL-2.0-only
> >
> > +config DRM_CIRRUS_QEMU
> > + tristate "Cirrus driver for QEMU emulated device"
> > + depends on DRM && PCI && MMU
> > + select DRM_KMS_HELPER
> > + select DRM_GEM_SHMEM_HELPER
> > + help
> > + This is a KMS driver for emulated cirrus device in qemu.
> > + It is *NOT* intended for real cirrus devices. This requires
> > + the modesetting userspace X.org driver.
> > +
> > + Cirrus is obsolete, the hardware was designed in the 90ies
> > + and can't keep up with todays needs. More background:
> > + https://www.kraxel.org/blog/2014/10/qemu-using-cirrus-considered-harmful/
> > +
> > + Better alternatives are:
> > + - stdvga (DRM_BOCHS, qemu -vga std, default in qemu 2.2+)
> > + - qxl (DRM_QXL, qemu -vga qxl, works best with spice)
> > + - virtio (DRM_VIRTIO_GPU), qemu -vga virtio)
> > +
> > config DRM_GM12U320
> > tristate "GM12U320 driver for USB projectors"
> > depends on DRM && USB
> > diff --git a/drivers/gpu/drm/tiny/Makefile b/drivers/gpu/drm/tiny/Makefile
> > index c96ceee71453..6ae4e9e5a35f 100644
> > --- a/drivers/gpu/drm/tiny/Makefile
> > +++ b/drivers/gpu/drm/tiny/Makefile
> > @@ -1,5 +1,6 @@
> > # SPDX-License-Identifier: GPL-2.0-only
> >
> > +obj-$(CONFIG_DRM_CIRRUS_QEMU) += cirrus.o
> > obj-$(CONFIG_DRM_GM12U320) += gm12u320.o
> > obj-$(CONFIG_TINYDRM_HX8357D) += hx8357d.o
> > obj-$(CONFIG_TINYDRM_ILI9225) += ili9225.o
> > diff --git a/drivers/gpu/drm/cirrus/cirrus.c b/drivers/gpu/drm/tiny/cirrus.c
> > similarity index 100%
> > rename from drivers/gpu/drm/cirrus/cirrus.c
> > rename to drivers/gpu/drm/tiny/cirrus.c
> >
>
> --
> Thomas Zimmermann
> Graphics Driver Developer
> SUSE Software Solutions Germany GmbH
> Maxfeldstr. 5, 90409 Nürnberg, Germany
> (HRB 36809, AG Nürnberg)
> Geschäftsführer: Felix Imendörffer
>

--
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch
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