1 # SPDX-License-Identifier: GPL-2.0-only
3 bool "VGA Arbitration" if EXPERT
5 depends on (PCI && !S390)
7 Some "legacy" VGA devices implemented on PCI typically have the same
8 hard-decoded addresses as they did on ISA. When multiple PCI devices
9 are accessed at same time they need some kind of coordination. Please
10 see Documentation/gpu/vgaarbiter.rst for more details. Select this to
13 config VGA_ARB_MAX_GPUS
14 int "Maximum number of GPUs"
18 Reserves space in the kernel to maintain resource locking for
19 multiple GPUS. The overhead for each GPU is very small.
22 bool "Laptop Hybrid Graphics - GPU switching support"
26 depends on (FRAMEBUFFER_CONSOLE=n || FB=y)
29 Many laptops released in 2008/9/10 have two GPUs with a multiplexer
30 to switch between them. This adds support for dynamic switching when
31 X isn't running and delayed switching until the next logoff. This
32 feature is called hybrid graphics, ATI PowerXpress, and Nvidia