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| author | Maxime Ripard <maxime.ripard@free-electrons.com> | 2016-09-30 16:37:06 +0200 |
|---|---|---|
| committer | Archit Taneja <architt@codeaurora.org> | 2016-10-10 10:58:44 +0530 |
| commit | 56fe8b6f499167e3f9e0aafc0909efe9fb673323 (patch) | |
| tree | 1cde29555ecc1adc74dc8454e8d949f551410dd6 /drivers/gpu/drm/bridge/Kconfig | |
| parent | a4fce9cb782ad340ee5576a38e934e5e75832dc6 (diff) | |
| download | lwn-56fe8b6f499167e3f9e0aafc0909efe9fb673323.tar.gz lwn-56fe8b6f499167e3f9e0aafc0909efe9fb673323.zip | |
drm/bridge: Add RGB to VGA bridge support
Some boards have an entirely passive RGB to VGA bridge, based on DACs
implemented by resistor ladders.
Those might or might not have an i2c bus routed to the VGA connector in
order to access the screen EDIDs.
Add a bridge that doesn't do anything but expose the modes available on the
screen, either based on the EDIDs if available, or based on the XGA
standards.
Acked-by: Rob Herring <robh@kernel.org>
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Tested-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Link: http://patchwork.freedesktop.org/patch/msgid/20160930143709.1388-3-maxime.ripard@free-electrons.com
Diffstat (limited to 'drivers/gpu/drm/bridge/Kconfig')
| -rw-r--r-- | drivers/gpu/drm/bridge/Kconfig | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/gpu/drm/bridge/Kconfig b/drivers/gpu/drm/bridge/Kconfig index b590e678052d..10e12e74fc9f 100644 --- a/drivers/gpu/drm/bridge/Kconfig +++ b/drivers/gpu/drm/bridge/Kconfig @@ -17,6 +17,13 @@ config DRM_ANALOGIX_ANX78XX the HDMI output of an application processor to MyDP or DisplayPort. +config DRM_DUMB_VGA_DAC + tristate "Dumb VGA DAC Bridge support" + depends on OF + select DRM_KMS_HELPER + help + Support for RGB to VGA DAC based bridges + config DRM_DW_HDMI tristate select DRM_KMS_HELPER |