1config VGA_ARB
 2	bool "VGA Arbitration" if EXPERT
 3	default y
 4	depends on PCI
 5	help
 6	  Some "legacy" VGA devices implemented on PCI typically have the same
 7	  hard-decoded addresses as they did on ISA. When multiple PCI devices
 8	  are accessed at same time they need some kind of coordination. Please
 9	  see Documentation/vgaarbiter.txt for more details. Select this to
10	  enable VGA arbiter.
11
12config VGA_ARB_MAX_GPUS
13	int "Maximum number of GPUs"
14	default 16
15	depends on VGA_ARB
16	help
17	  Reserves space in the kernel to maintain resource locking for
18	  multiple GPUS.  The overhead for each GPU is very small.
19
20config VGA_SWITCHEROO
21	bool "Laptop Hybrid Graphics - GPU switching support"
22	depends on X86
23	depends on ACPI
 
 
 
24	help
25	  Many laptops released in 2008/9/10 have two GPUs with a multiplexer
26	  to switch between them. This adds support for dynamic switching when
27          X isn't running and delayed switching until the next logoff. This
28	  feature is called hybrid graphics, ATI PowerXpress, and Nvidia
29	  HybridPower.

 1# SPDX-License-Identifier: GPL-2.0-only
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 2config VGA_SWITCHEROO
 3	bool "Laptop Hybrid Graphics - GPU switching support"
 4	depends on X86
 5	depends on ACPI
 6	depends on PCI
 7	depends on (FRAMEBUFFER_CONSOLE=n || FB=y)
 8	select VGA_ARB
 9	help
10	  Many laptops released in 2008/9/10 have two GPUs with a multiplexer
11	  to switch between them. This adds support for dynamic switching when
12	  X isn't running and delayed switching until the next logoff. This
13	  feature is called hybrid graphics, ATI PowerXpress, and Nvidia
14	  HybridPower.