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| author | Xinliang Liu <xinliang.liu@linaro.org> | 2017-02-15 17:19:08 +0100 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2017-02-26 22:11:37 +0100 |
| commit | 5f15257689bfaacfc1ecd7d91a2e0515a5d3d104 (patch) | |
| tree | d2d9814c69e62d8322f3551183a96a9a71420156 /drivers/gpu/drm/Kconfig | |
| parent | cd2523569a733d85788b6fc016e4e23cb3549a25 (diff) | |
| download | talos-obmc-linux-5f15257689bfaacfc1ecd7d91a2e0515a5d3d104.tar.gz talos-obmc-linux-5f15257689bfaacfc1ecd7d91a2e0515a5d3d104.zip | |
drm/fb-helper: Add multi buffer support for cma fbdev
This patch add a config to support to create multi buffer for cma fbdev.
Such as double buffer and triple buffer.
Cma fbdev is convient to add a legency fbdev. And still many Android
devices use fbdev now and at least double buffer is needed for these
Android devices, so that a buffer flip can be operated. It will need
some time for Android device vendors to abondon legency fbdev. So multi
buffer for fbdev is needed.
Signed-off-by: Xinliang Liu <xinliang.liu@linaro.org>
[s.christ@phytec.de: Picking patch from
https://lkml.org/lkml/2015/9/14/188]
Signed-off-by: Stefan Christ <s.christ@phytec.de>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: Dave Airlie <airlied@gmail.com>
Tested-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/075ffb50cc16ab055b5d47b30163401bb356ab51.1487175046.git-series.maxime.ripard@free-electrons.com
Diffstat (limited to 'drivers/gpu/drm/Kconfig')
| -rw-r--r-- | drivers/gpu/drm/Kconfig | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig index 88e01e08e279..78d7fc0ebb57 100644 --- a/drivers/gpu/drm/Kconfig +++ b/drivers/gpu/drm/Kconfig @@ -99,6 +99,15 @@ config DRM_FBDEV_EMULATION If in doubt, say "Y". +config DRM_FBDEV_OVERALLOC + int "Overallocation of the fbdev buffer" + depends on DRM_FBDEV_EMULATION + default 100 + help + Defines the fbdev buffer overallocation in percent. Default + is 100. Typical values for double buffering will be 200, + triple buffering 300. + config DRM_LOAD_EDID_FIRMWARE bool "Allow to specify an EDID data set instead of probing for it" depends on DRM_KMS_HELPER |
