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sound/sound_core.c implements soundcore.ko and contains two parts - sound_class which is shared by both ALSA and OSS and device redirection support for OSS. It's always compiled when any sound support is enabled although it's necessary only when OSS (the actual one or emulation) is enabled. This is slightly wasteful and as device redirection always registers character device region for major 14, it prevents alternative implementation. This patch introduces a new config SOUND_OSS_CORE which is selected iff OSS support is actually necessary and build the OSS core part conditionally. If OSS is disabled, soundcore merely contains sound_class but leaving it that way seems to be the simplest approach as otherwise sound_class should be in ALSA core file if OSS is disabled but should be in soundcore if OSS is enabled. Also, there's also the user confusion factor. Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@perex.cz>
110 lines
2.7 KiB
Plaintext
110 lines
2.7 KiB
Plaintext
# sound/Config.in
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#
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menuconfig SOUND
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tristate "Sound card support"
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depends on HAS_IOMEM
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help
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If you have a sound card in your computer, i.e. if it can say more
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than an occasional beep, say Y. Be sure to have all the information
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about your sound card and its configuration down (I/O port,
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interrupt and DMA channel), because you will be asked for it.
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You want to read the Sound-HOWTO, available from
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<http://www.tldp.org/docs.html#howto>. General information about
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the modular sound system is contained in the files
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<file:Documentation/sound/oss/Introduction>. The file
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<file:Documentation/sound/oss/README.OSS> contains some slightly
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outdated but still useful information as well. Newer sound
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driver documentation is found in <file:Documentation/sound/alsa/*>.
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If you have a PnP sound card and you want to configure it at boot
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time using the ISA PnP tools (read
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<http://www.roestock.demon.co.uk/isapnptools/>), then you need to
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compile the sound card support as a module and load that module
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after the PnP configuration is finished. To do this, choose M here
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and read <file:Documentation/sound/oss/README.modules>; the module
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will be called soundcore.
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if SOUND
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config SOUND_OSS_CORE
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bool
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default n
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source "sound/oss/dmasound/Kconfig"
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if !M68K
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menuconfig SND
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tristate "Advanced Linux Sound Architecture"
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help
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Say 'Y' or 'M' to enable ALSA (Advanced Linux Sound Architecture),
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the new base sound system.
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For more information, see <http://www.alsa-project.org/>
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if SND
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source "sound/core/Kconfig"
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source "sound/drivers/Kconfig"
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source "sound/isa/Kconfig"
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source "sound/pci/Kconfig"
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source "sound/ppc/Kconfig"
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source "sound/aoa/Kconfig"
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source "sound/arm/Kconfig"
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source "sound/spi/Kconfig"
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source "sound/mips/Kconfig"
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source "sound/sh/Kconfig"
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# the following will depend on the order of config.
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# here assuming USB is defined before ALSA
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source "sound/usb/Kconfig"
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# the following will depend on the order of config.
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# here assuming PCMCIA is defined before ALSA
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source "sound/pcmcia/Kconfig"
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source "sound/sparc/Kconfig"
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source "sound/parisc/Kconfig"
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source "sound/soc/Kconfig"
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endif # SND
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menuconfig SOUND_PRIME
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tristate "Open Sound System (DEPRECATED)"
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select SOUND_OSS_CORE
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help
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Say 'Y' or 'M' to enable Open Sound System drivers.
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if SOUND_PRIME
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source "sound/oss/Kconfig"
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endif # SOUND_PRIME
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endif # !M68K
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endif # SOUND
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# AC97_BUS is used from both sound and ucb1400
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config AC97_BUS
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tristate
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help
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This is used to avoid config and link hard dependencies between the
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sound subsystem and other function drivers completely unrelated to
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sound although they're sharing the AC97 bus. Concerned drivers
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should "select" this.
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