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

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On Wed, Apr 15, 2020 at 10:01 AM Thomas Zimmermann <tzimmermann@xxxxxxx> 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@xxxxxxxxx>
> > Cc: Dave Airlie <airlied@xxxxxxxxxx>
> > Cc: Gerd Hoffmann <kraxel@xxxxxxxxxx>
> > Cc: virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx
>
> Reviewed-by: Thomas Zimmermann <tzimmermann@xxxxxxx>
>
> > ---
> >  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@xxxxxxxxxxxxxxxxxxxxxxxxxx
> >  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@xxxxxxxxxx>
> > 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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