drm/client: Add acquire_outputs callback; implement for fbdev emulation

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Add the callback acquire_outputs to drm_client_funcs to inform an internal
DRM client that vga-switcheroo is about to switch the physical outputs to
the client's device. Allows the client to prepare its internal state for
the upcoming switch.

Wire up the DRM client helpers to invoke the helper for a device's
clients.

Implement acquire_outputs for fbdev emulation. Invoke fb_switch_outputs(),
which remaps framebuffers to virtual terminals in fbcon. Currently this
is still being done by vga-switcheroo. With more DRM clients becoming
available, vga-switcheroo needs to become client agonostic.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Maxime Ripard <mripard@kernel.org>
Acked-by: Helge Deller <deller@gmx.de>
Link: https://patch.msgid.link/20260709092215.168172-3-tzimmermann@suse.de

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This commit is contained in:

Thomas Zimmermann 2026-07-09 11:15:58 +02:00

parent 138e7ff66a

commit 4e089d048a

4 changed files with 51 additions and 7 deletions

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23

drivers/gpu/drm/clients/drm_fbdev_client.c

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18

drivers/gpu/drm/drm_client_event.c

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14

include/drm/drm_client.h

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3

include/drm/drm_client_event.h

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