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| author | Alex Hung <alex.hung@canonical.com> | 2018-07-18 11:46:55 -0700 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2018-07-20 10:12:41 +0200 |
| commit | 887532ca7ca59fcf0547a79211756791128030a3 (patch) | |
| tree | 2946ce1cc669c3e7ef15b2884a59b1502cfc049a /arch/powerpc/kernel/firmware.c | |
| parent | 9d3cce1e8b8561fed5f383d22a4d6949db4eadbe (diff) | |
| download | op-kernel-dev-887532ca7ca59fcf0547a79211756791128030a3.zip op-kernel-dev-887532ca7ca59fcf0547a79211756791128030a3.tar.gz | |
ACPI / OSI: Add OEM _OSI string to enable NVidia HDMI audio
Some ThinkPad systems have a power-saving feature that turns off HDMI
audio device in Windows, but NVidia Linux driver does not support this
feature. As a result, HDMI audio will not work on Linux.
A BIOS workaround is added with an OEM_OSI string
"Linux-Lenovo-NV-HDMI-Audio" to power on NVidia HDMI audio when booting.
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>
Diffstat (limited to 'arch/powerpc/kernel/firmware.c')
0 files changed, 0 insertions, 0 deletions
