blob: 84ab482d0db619e7ea34fcdbfa95d56e64ff467f (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
|
# SPDX-License-Identifier: GPL-2.0-only
config VGA_ARB
bool "VGA Arbitration" if EXPERT
default y
depends on (PCI && !S390)
help
Some "legacy" VGA devices implemented on PCI typically have the same
hard-decoded addresses as they did on ISA. When multiple PCI devices
are accessed at same time they need some kind of coordination. Please
see Documentation/gpu/vgaarbiter.rst for more details. Select this to
enable VGA arbiter.
config VGA_ARB_MAX_GPUS
int "Maximum number of GPUs"
default 16
depends on VGA_ARB
help
Reserves space in the kernel to maintain resource locking for
multiple GPUS. The overhead for each GPU is very small.
config VGA_SWITCHEROO
bool "Laptop Hybrid Graphics - GPU switching support"
depends on X86
depends on ACPI
depends on PCI
select VGA_ARB
help
Many laptops released in 2008/9/10 have two GPUs with a multiplexer
to switch between them. This adds support for dynamic switching when
X isn't running and delayed switching until the next logoff. This
feature is called hybrid graphics, ATI PowerXpress, and Nvidia
HybridPower.
|
