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| author | Gerd Hoffmann <kraxel@redhat.com> | 2019-04-05 11:52:19 +0200 |
|---|---|---|
| committer | Gerd Hoffmann <kraxel@redhat.com> | 2019-04-08 06:59:27 +0200 |
| commit | ab3e023b1b4c9887c9f0f761b47f3f0516bd3434 (patch) | |
| tree | 2988c8484aa74bd0c72365028237cd145be531d8 /drivers/gpu/drm/cirrus/Kconfig | |
| parent | drm: add drm_fb_xrgb8888_to_rgb888_dstclip() (diff) | |
| download | linux-ab3e023b1b4c9887c9f0f761b47f3f0516bd3434.tar.xz linux-ab3e023b1b4c9887c9f0f761b47f3f0516bd3434.zip | |
drm/cirrus: rewrite and modernize driver.
Time to kill some bad sample code people are copying from ;)
This is a complete rewrite of the cirrus driver. The cirrus_mode_set()
function is pretty much the only function which is carried over largely
unmodified. Everything else is upside down.
It is a single monster patch. But given that it does some pretty
fundamental changes to the drivers workflow and also reduces the code
size by roughly 70% I think it'll still be alot easier to review than a
longish baby-step patch series.
Changes summary:
- Given the small amout of video memory (4 MB) the cirrus device has
the rewritten driver doesn't try to manage buffers there. Instead
it will blit (memcpy) the active framebuffer to video memory.
- All gem objects are stored in main memory and are manged using the
new shmem helpers. ttm is out.
- It supports RG16, RG24 and XR24 formats. XR24 gets converted to RG24
or RG16 at blit time if needed, to avoid the pitch becoming larger
than what the cirrus hardware can handle.
- The simple display pipeline is used.
- The generic fbdev emulation is used.
- It's a atomic driver now.
- It runs wayland.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Noralf Trønnes <noralf@tronnes.org>
Link: http://patchwork.freedesktop.org/patch/msgid/20190405095219.9231-6-kraxel@redhat.com
Diffstat (limited to 'drivers/gpu/drm/cirrus/Kconfig')
| -rw-r--r-- | drivers/gpu/drm/cirrus/Kconfig | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/cirrus/Kconfig b/drivers/gpu/drm/cirrus/Kconfig index fc78c90ee931..dd4f52a0bc1c 100644 --- a/drivers/gpu/drm/cirrus/Kconfig +++ b/drivers/gpu/drm/cirrus/Kconfig @@ -2,7 +2,7 @@ config DRM_CIRRUS_QEMU tristate "Cirrus driver for QEMU emulated device" depends on DRM && PCI && MMU select DRM_KMS_HELPER - select DRM_TTM + 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 |