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. default y if SND_OMAP_SOC_ABE_DSP
  123. help
  124. If you say Y here, the minor numbers of ALSA device files in
  125. /dev/snd/ are allocated dynamically. This allows you to have
  126. more than 8 sound cards, but requires a dynamic device file
  127. system like udev.
  128. If you are unsure about this, say N here.
  129. config SND_SUPPORT_OLD_API
  130. bool "Support old ALSA API"
  131. default y
  132. help
  133. Say Y here to support the obsolete ALSA PCM API (ver.0.9.0 rc3
  134. or older).
  135. config SND_VERBOSE_PROCFS
  136. bool "Verbose procfs contents"
  137. depends on PROC_FS
  138. default y
  139. help
  140. Say Y here to include code for verbose procfs contents (provides
  141. useful information to developers when a problem occurs). On the
  142. other side, it makes the ALSA subsystem larger.
  143. config SND_VERBOSE_PRINTK
  144. bool "Verbose printk"
  145. help
  146. Say Y here to enable verbose log messages. These messages
  147. will help to identify source file and position containing
  148. printed messages.
  149. You don't need this unless you're debugging ALSA.
  150. config SND_DEBUG
  151. bool "Debug"
  152. help
  153. Say Y here to enable ALSA debug code.
  154. config SND_DEBUG_VERBOSE
  155. bool "More verbose debug"
  156. depends on SND_DEBUG
  157. help
  158. Say Y here to enable extra-verbose debugging messages.
  159. Let me repeat: it enables EXTRA-VERBOSE DEBUGGING messages.
  160. So, say Y only if you are ready to be annoyed.
  161. config SND_PCM_XRUN_DEBUG
  162. bool "Enable PCM ring buffer overrun/underrun debugging"
  163. default n
  164. depends on SND_DEBUG && SND_VERBOSE_PROCFS
  165. help
  166. Say Y to enable the PCM ring buffer overrun/underrun debugging.
  167. It is usually not required, but if you have trouble with
  168. sound clicking when system is loaded, it may help to determine
  169. the process or driver which causes the scheduling gaps.
  170. config SND_VMASTER
  171. bool
  172. config SND_KCTL_JACK
  173. bool
  174. config SND_DMA_SGBUF
  175. def_bool y
  176. depends on X86
  177. source "sound/core/seq/Kconfig"