Kconfig 6.0 KB

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  1. # ALSA soundcard-configuration
  2. config SND_TIMER
  3. tristate
  4. config SND_PCM
  5. tristate
  6. select SND_TIMER
  7. config SND_HWDEP
  8. tristate
  9. config SND_RAWMIDI
  10. tristate
  11. config SND_COMPRESS_OFFLOAD
  12. tristate
  13. # To be effective this also requires INPUT - users should say:
  14. # select SND_JACK if INPUT=y || INPUT=SND
  15. # to avoid having to force INPUT on.
  16. config SND_JACK
  17. bool
  18. config SND_SEQUENCER
  19. tristate "Sequencer support"
  20. select SND_TIMER
  21. help
  22. Say Y or M to enable MIDI sequencer and router support. This
  23. feature allows routing and enqueueing of MIDI events. Events
  24. can be processed at a given time.
  25. Many programs require this feature, so you should enable it
  26. unless you know what you're doing.
  27. config SND_SEQ_DUMMY
  28. tristate "Sequencer dummy client"
  29. depends on SND_SEQUENCER
  30. help
  31. Say Y here to enable the dummy sequencer client. This client
  32. is a simple MIDI-through client: all normal input events are
  33. redirected to the output port immediately.
  34. You don't need this unless you want to connect many MIDI
  35. devices or applications together.
  36. To compile this driver as a module, choose M here: the module
  37. will be called snd-seq-dummy.
  38. config SND_OSSEMUL
  39. select SOUND_OSS_CORE
  40. bool
  41. config SND_MIXER_OSS
  42. tristate "OSS Mixer API"
  43. select SND_OSSEMUL
  44. help
  45. To enable OSS mixer API emulation (/dev/mixer*), say Y here
  46. and read <file:Documentation/sound/alsa/OSS-Emulation.txt>.
  47. Many programs still use the OSS API, so say Y.
  48. To compile this driver as a module, choose M here: the module
  49. will be called snd-mixer-oss.
  50. config SND_PCM_OSS
  51. tristate "OSS PCM (digital audio) API"
  52. select SND_OSSEMUL
  53. select SND_PCM
  54. help
  55. To enable OSS digital audio (PCM) emulation (/dev/dsp*), say Y
  56. here and read <file:Documentation/sound/alsa/OSS-Emulation.txt>.
  57. Many programs still use the OSS API, so say Y.
  58. To compile this driver as a module, choose M here: the module
  59. will be called snd-pcm-oss.
  60. config SND_PCM_OSS_PLUGINS
  61. bool "OSS PCM (digital audio) API - Include plugin system"
  62. depends on SND_PCM_OSS
  63. default y
  64. help
  65. If you disable this option, the ALSA's OSS PCM API will not
  66. support conversion of channels, formats and rates. It will
  67. behave like most of new OSS/Free drivers in 2.4/2.6 kernels.
  68. config SND_SEQUENCER_OSS
  69. bool "OSS Sequencer API"
  70. depends on SND_SEQUENCER
  71. select SND_OSSEMUL
  72. help
  73. Say Y here to enable OSS sequencer emulation (both
  74. /dev/sequencer and /dev/music interfaces).
  75. Many programs still use the OSS API, so say Y.
  76. If you choose M in "Sequencer support" (SND_SEQUENCER),
  77. this will be compiled as a module. The module will be called
  78. snd-seq-oss.
  79. config SND_HRTIMER
  80. tristate "HR-timer backend support"
  81. depends on HIGH_RES_TIMERS
  82. select SND_TIMER
  83. help
  84. Say Y here to enable HR-timer backend for ALSA timer. ALSA uses
  85. the hrtimer as a precise timing source. The ALSA sequencer code
  86. also can use this timing source.
  87. To compile this driver as a module, choose M here: the module
  88. will be called snd-hrtimer.
  89. config SND_SEQ_HRTIMER_DEFAULT
  90. bool "Use HR-timer as default sequencer timer"
  91. depends on SND_HRTIMER && SND_SEQUENCER
  92. default y
  93. help
  94. Say Y here to use the HR-timer backend as the default sequencer
  95. timer.
  96. config SND_RTCTIMER
  97. tristate "RTC Timer support"
  98. depends on RTC
  99. select SND_TIMER
  100. help
  101. Say Y here to enable RTC timer support for ALSA. ALSA uses
  102. the RTC timer as a precise timing source and maps the RTC
  103. timer to ALSA's timer interface. The ALSA sequencer code also
  104. can use this timing source.
  105. To compile this driver as a module, choose M here: the module
  106. will be called snd-rtctimer.
  107. Note that this option is exclusive with the new RTC drivers
  108. (CONFIG_RTC_CLASS) since this requires the old API.
  109. config SND_SEQ_RTCTIMER_DEFAULT
  110. bool "Use RTC as default sequencer timer"
  111. depends on SND_RTCTIMER && SND_SEQUENCER
  112. depends on !SND_SEQ_HRTIMER_DEFAULT
  113. default y
  114. help
  115. Say Y here to use the RTC timer as the default sequencer
  116. timer. This is strongly recommended because it ensures
  117. precise MIDI timing even when the system timer runs at less
  118. than 1000 Hz.
  119. If in doubt, say Y.
  120. config SND_DYNAMIC_MINORS
  121. bool "Dynamic device file minor numbers"
  122. help
  123. If you say Y here, the minor numbers of ALSA device files in
  124. /dev/snd/ are allocated dynamically. This allows you to have
  125. more than 8 sound cards, but requires a dynamic device file
  126. system like udev.
  127. If you are unsure about this, say N here.
  128. config SND_SUPPORT_OLD_API
  129. bool "Support old ALSA API"
  130. default y
  131. help
  132. Say Y here to support the obsolete ALSA PCM API (ver.0.9.0 rc3
  133. or older).
  134. config SND_VERBOSE_PROCFS
  135. bool "Verbose procfs contents"
  136. depends on PROC_FS
  137. default y
  138. help
  139. Say Y here to include code for verbose procfs contents (provides
  140. useful information to developers when a problem occurs). On the
  141. other side, it makes the ALSA subsystem larger.
  142. config SND_VERBOSE_PRINTK
  143. bool "Verbose printk"
  144. help
  145. Say Y here to enable verbose log messages. These messages
  146. will help to identify source file and position containing
  147. printed messages.
  148. You don't need this unless you're debugging ALSA.
  149. config SND_DEBUG
  150. bool "Debug"
  151. help
  152. Say Y here to enable ALSA debug code.
  153. config SND_DEBUG_VERBOSE
  154. bool "More verbose debug"
  155. depends on SND_DEBUG
  156. help
  157. Say Y here to enable extra-verbose debugging messages.
  158. Let me repeat: it enables EXTRA-VERBOSE DEBUGGING messages.
  159. So, say Y only if you are ready to be annoyed.
  160. config SND_PCM_XRUN_DEBUG
  161. bool "Enable PCM ring buffer overrun/underrun debugging"
  162. default n
  163. depends on SND_DEBUG && SND_VERBOSE_PROCFS
  164. help
  165. Say Y to enable the PCM ring buffer overrun/underrun debugging.
  166. It is usually not required, but if you have trouble with
  167. sound clicking when system is loaded, it may help to determine
  168. the process or driver which causes the scheduling gaps.
  169. config SND_VMASTER
  170. bool
  171. config SND_KCTL_JACK
  172. bool
  173. config SND_DMA_SGBUF
  174. def_bool y
  175. depends on X86
  176. source "sound/core/seq/Kconfig"