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Mgag200's BMC connector tracks the status of an underlying physical
connector and updates the BMC status accordingly. This functionality
works around GNOME's settings app, which cannot handle multiple
outputs on the same CRTC.
The workaround is now obsolete as the VGA-BMC connector handles BMC
support internally. Hence, remove the driver's code and the BMC output
entirely.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240805130622.63458-6-tzimmermann@suse.de
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The BMC's scanout synchronization is only indirectly related to the
VIDRST functionality. Do some renaming.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240711072415.11831-4-tzimmermann@suse.de
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The VRSTEN and HRSTEN bits control whether a CRTC synchronizes its
display signal with an external source on the VIDRST pin. The G200WB
and G200EW3 models synchronize with a BMC chip, but different external
video encoders, such as the Matrox Maven, can also be attached to the
pin.
Only set VRSTEN and HRSTEN bits in the CRTC mode-setting code, so the
bits are independent from the BMC. Add the field set_vidrst to the CRTC
state for this purpose. Off by default, control the CRTC VIDRST setting
from the CRTC's atomic_check helper.
v3:
- don't clear bits unnecessary (Jocelyn)
v2:
- keep logic entirely in CRTC (Jocelyn)
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240711072415.11831-2-tzimmermann@suse.de
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The BMC output can be viewed via the BMC's web interface or a
similar client. Represent it as virtual encoder and connector.
It's attached to the same CRTC as the VGA connector.
The connector's status depends on the physical connector's status.
The BMC is only connected if the physical connector is not. This
is necessary to support userspace clients that can only handle a
single output per CRTC.
The BMC is a server feature. Add a BMC output for all server chips,
but not the desktop models.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240610141141.29527-3-tzimmermann@suse.de
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Move the BMC-related code into its own file and wire it up with device
callbacks.
While programming a new display mode, G200EW3 and G200WB have to de-
synchronize with the BMC. Synchronization is done via VIDRST pins
and controlled via VRSTEN and HRSTEN bits. Move the BMC code behind
a serviceable interface and call it from the CRTC's enable and
disable functions.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com>
Tested-by: Jocelyn Falempe <jfalempe@redhat.com>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20220728124103.30159-11-tzimmermann@suse.de
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