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Diffstat (limited to 'drivers/platform/x86/Kconfig')
| -rw-r--r-- | drivers/platform/x86/Kconfig | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig index ec4faffe6b0..db32c25e360 100644 --- a/drivers/platform/x86/Kconfig +++ b/drivers/platform/x86/Kconfig @@ -231,8 +231,36 @@ config THINKPAD_ACPI This driver was formerly known as ibm-acpi. + Extra functionality will be available if the rfkill (CONFIG_RFKILL) + and/or ALSA (CONFIG_SND) subsystems are available in the kernel. + Note that if you want ThinkPad-ACPI to be built-in instead of + modular, ALSA and rfkill will also have to be built-in. + If you have an IBM or Lenovo ThinkPad laptop, say Y or M here. +config THINKPAD_ACPI_ALSA_SUPPORT + bool "Console audio control ALSA interface" + depends on THINKPAD_ACPI + depends on SND + depends on SND = y || THINKPAD_ACPI = SND + default y + ---help--- + Enables monitoring of the built-in console audio output control + (headphone and speakers), which is operated by the mute and (in + some ThinkPad models) volume hotkeys. + + If this option is enabled, ThinkPad-ACPI will export an ALSA card + with a single read-only mixer control, which should be used for + on-screen-display feedback purposes by the Desktop Environment. + + Optionally, the driver will also allow software control (the + ALSA mixer will be made read-write). Please refer to the driver + documentation for details. + + All IBM models have both volume and mute control. Newer Lenovo + models only have mute control (the volume hotkeys are just normal + keys and volume control is done through the main HDA mixer). + config THINKPAD_ACPI_DEBUGFACILITIES bool "Maintainer debug facilities" depends on THINKPAD_ACPI |