ACPI / OSI: Add OEM _OSI string to enable dGPU direct output
authorAlex Hung <alex.hung@canonical.com>
Tue, 18 Dec 2018 04:00:54 +0000 (12:00 +0800)
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>
Tue, 18 Dec 2018 10:06:05 +0000 (11:06 +0100)
commit28586a51eea666d5531bcaef2f68e4abbd87242c
treed82117098b4bccba5cac85cff1fafcf43d83be4d
parent7566ec393f4161572ba6f11ad5171fd5d59b0fbd
ACPI / OSI: Add OEM _OSI string to enable dGPU direct output

For HP Inc. mobile workstation with hybrid graphics support, dGPU can
directly output to external monitors; however, Nvidia and AMD's Linux
drivers aren't able to support this feature.

The OEM _OSI string "Linux-HPI-Hybrid-Graphics" is used by BIOS to
implement dGPU direct output to external monitors.

The form of the OEM _OSI strings is defined by each OEMs and is
discussed in Documentation/acpi/osi.txt.

Signed-off-by: Alex Hung <alex.hung@canonical.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
drivers/acpi/osi.c