ALSA: hda - Clarify CONFIG_SND_HDA_RECONFIG usages (39f0ccde) · Commits · 戴 / test

Since the recent rewrite of HD-audio infrastructure, CONFIG_SND_HDA_RECONFIG has a slightly different meaning. In the earlier versions, it implicitly assumed only the usage via hwdep sysfs entries. Meanwhile, in the recent version, this option is meant to enable the reconfig code in HD-audio driver, which may be used by the patch loader without hwdep interface. This patch tries to clarify the usage pattern a bit better, hopefully avoid the further confusion. Reported-by:

Jochen Henneberg <jh@henneberg-systemdesign.com> Signed-off-by:

Takashi Iwai <tiwai@suse.de>

sound/pci/hda/Kconfig

+7 −3

Original line number	Diff line number	Diff line
		@@ -50,9 +50,13 @@ config SND_HDA_RECONFIG
		bool "Allow dynamic codec reconfiguration"
		help
		Say Y here to enable the HD-audio codec re-configuration feature.
		This adds the sysfs interfaces to allow user to clear the whole
		codec configuration, change the codec setup, add extra verbs,
		and re-configure the codec dynamically.
		It allows user to clear the whole codec configuration, change the
		codec setup, add extra verbs, and re-configure the codec dynamically.

		Note that this item alone doesn't provide the sysfs interface, but
		enables the feature just for the patch loader below.
		If you need the traditional sysfs entries for the manual interaction,
		turn on CONFIG_SND_HDA_HWDEP as well.

		config SND_HDA_INPUT_BEEP
		bool "Support digital beep via input layer"

Admin message