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linux-yocto/drivers/gpu/vga/Kconfig
Bjorn Helgaas 1d38fe6ee6 PCI/VGA: Move vgaarb to drivers/pci 
The VGA arbiter is really PCI-specific and doesn't depend on any GPU
things.  Move it to the PCI subsystem.

Note that misc_init() must be called before vga_arb_device_init().  These
are both subsys_initcalls, so this ordering depends on the link order,
which is determined by drivers/Makefile:

  obj-y += pci/
  obj-y += char/        <-- misc_init()
  obj-y += gpu/         <-- vga_arb_device_init() (before this commit)

The drivers/pci/ subsys_initcalls are called *before* misc_init(), so
convert vga_arb_device_init() to subsys_initcall_sync(), which is called
after *all* subsys_initcalls.

Link: https://lore.kernel.org/r/20220224224753.297579-2-helgaas@kernel.org
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2022-03-09 18:30:46 -06:00

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SPDX-License-Identifier: GPL-2.0-only

config VGA_SWITCHEROO bool "Laptop Hybrid Graphics - GPU switching support" depends on X86 depends on ACPI depends on PCI depends on (FRAMEBUFFER_CONSOLE=n || FB=y) 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.