xref: /openbmc/linux/sound/drivers/Kconfig (revision 828b871a) 
1# SPDX-License-Identifier: GPL-2.0-only
2config SND_MPU401_UART
3	tristate
4	select SND_RAWMIDI
5
6config SND_OPL3_LIB
7	tristate
8	select SND_TIMER
9	select SND_HWDEP
10	select SND_SEQ_DEVICE if SND_SEQUENCER != n
11
12config SND_OPL4_LIB
13	tristate
14	select SND_TIMER
15	select SND_HWDEP
16	select SND_SEQ_DEVICE if SND_SEQUENCER != n
17
18# select SEQ stuff to min(SND_SEQUENCER,SND_XXX)
19config SND_OPL3_LIB_SEQ
20	def_tristate SND_SEQUENCER && SND_OPL3_LIB
21	select SND_SEQ_MIDI_EMUL
22	select SND_SEQ_MIDI_EVENT
23
24config SND_OPL4_LIB_SEQ
25	def_tristate SND_SEQUENCER && SND_OPL4_LIB
26	select SND_SEQ_MIDI_EMUL
27	select SND_SEQ_MIDI_EVENT
28
29config SND_VX_LIB
30	tristate
31	select FW_LOADER
32	select SND_HWDEP
33	select SND_PCM
34
35config SND_AC97_CODEC
36	tristate
37	select SND_PCM
38	select AC97_BUS
39	select SND_VMASTER
40
41menuconfig SND_DRIVERS
42	bool "Generic sound devices"
43	default y
44	help
45	  Support for generic sound devices.
46
47if SND_DRIVERS
48
49config SND_PCSP
50	tristate "PC-Speaker support (READ HELP!)"
51	depends on PCSPKR_PLATFORM && X86 && HIGH_RES_TIMERS
52	depends on INPUT
53	select SND_PCM
54	help
55	  If you don't have a sound card in your computer, you can include a
56	  driver for the PC speaker which allows it to act like a primitive
57	  sound card.
58	  This driver also replaces the pcspkr driver for beeps.
59
60	  You can compile this as a module which will be called snd-pcsp.
61
62	  WARNING: if you already have a soundcard, enabling this
63	  driver may lead to a problem. Namely, it may get loaded
64	  before the other sound driver of yours, making the
65	  pc-speaker a default sound device. Which is likely not
66	  what you want. To make this driver play nicely with other
67	  sound driver, you can add this in a configuration file under
68	  /etc/modprobe.d/ directory:
69	  options snd-pcsp index=2
70
71	  You don't need this driver if you only want your pc-speaker to beep.
72	  You don't need this driver if you have a tablet piezo beeper
73	  in your PC instead of the real speaker.
74
75	  Say N if you have a sound card.
76	  Say M if you don't.
77	  Say Y only if you really know what you do.
78
79config SND_DUMMY
80	tristate "Dummy (/dev/null) soundcard"
81	select SND_PCM
82	help
83	  Say Y here to include the dummy driver.  This driver does
84	  nothing, but emulates various mixer controls and PCM devices.
85
86	  You don't need this unless you're testing the hardware support
87	  of programs using the ALSA API.
88
89	  To compile this driver as a module, choose M here: the module
90	  will be called snd-dummy.
91
92config SND_ALOOP
93	tristate "Generic loopback driver (PCM)"
94	select SND_PCM
95	select SND_TIMER
96	help
97	  Say 'Y' or 'M' to include support for the PCM loopback device.
98	  This module returns played samples back to the user space using
99	  the standard ALSA PCM device. The devices are routed 0->1 and
100	  1->0, where first number is the playback PCM device and second
101	  number is the capture device. Module creates two PCM devices and
102	  configured number of substreams (see the pcm_substreams module
103	  parameter).
104
105	  The loopback device allows time synchronization with an external
106	  timing source using the time shift universal control (+-20%
107	  of system time).
108
109	  To compile this driver as a module, choose M here: the module
110	  will be called snd-aloop.
111
112config SND_PCMTEST
113	tristate "Virtual PCM test driver"
114	depends on DEBUG_FS
115	select SND_PCM
116	help
117	  Say 'Y' or 'M' to include support for the Virtual PCM test driver.
118	  This driver is aimed at extended testing of the userspace applications
119	  which use the ALSA API, as well as the PCM middle layer testing.
120
121	  It can generate random or pattern-based data into the capture stream,
122	  check the playback stream for containing the selected pattern, inject
123	  time delays during capture/playback, redefine the RESET ioctl operation
124	  to perform the PCM middle layer testing and inject errors during the
125	  PCM callbacks. It supports both interleaved and non-interleaved access
126	  modes. You can find the corresponding selftest in the 'alsa'
127	  selftests folder.
128
129config SND_VIRMIDI
130	tristate "Virtual MIDI soundcard"
131	depends on SND_SEQUENCER
132	select SND_TIMER
133	select SND_RAWMIDI
134	select SND_SEQ_VIRMIDI
135	select SND_SEQ_MIDI_EVENT
136	help
137	  Say Y here to include the virtual MIDI driver.  This driver
138	  allows to connect applications using raw MIDI devices to
139	  sequencer clients.
140
141	  If you don't know what MIDI is, say N here.
142
143	  To compile this driver as a module, choose M here: the module
144	  will be called snd-virmidi.
145
146config SND_MTPAV
147	tristate "MOTU MidiTimePiece AV multiport MIDI"
148	depends on HAS_IOPORT
149	select SND_RAWMIDI
150	help
151	  To use a MOTU MidiTimePiece AV multiport MIDI adapter
152	  connected to the parallel port, say Y here and make sure that
153	  the standard parallel port driver isn't used for the port.
154
155	  To compile this driver as a module, choose M here: the module
156	  will be called snd-mtpav.
157
158config SND_MTS64
159	tristate "ESI Miditerminal 4140 driver"
160	depends on PARPORT
161	select SND_RAWMIDI
162	help
163	  The ESI Miditerminal 4140 is a 4 In 4 Out MIDI Interface with
164	  additional SMPTE Timecode capabilities for the parallel port.
165
166	  Say 'Y' to include support for this device.
167
168	  To compile this driver as a module, chose 'M' here: the module
169	  will be called snd-mts64.
170
171config SND_SERIAL_U16550
172	tristate "UART16550 serial MIDI driver"
173	depends on HAS_IOPORT
174	select SND_RAWMIDI
175	help
176	  To include support for MIDI serial port interfaces, say Y here
177	  and read <file:Documentation/sound/cards/serial-u16550.rst>.
178	  This driver works with serial UARTs 16550 and better.
179
180	  This driver accesses the serial port hardware directly, so
181	  make sure that the standard serial driver isn't used or
182	  deactivated with setserial before loading this driver.
183
184	  To compile this driver as a module, choose M here: the module
185	  will be called snd-serial-u16550.
186
187config SND_SERIAL_GENERIC
188	tristate "Generic serial MIDI driver"
189	depends on SERIAL_DEV_BUS
190	depends on OF
191	select SND_RAWMIDI
192	help
193	  To include support for mapping generic serial devices as raw
194	  ALSA MIDI devices, say Y here. The driver only supports setting
195	  the serial port to standard baudrates. To attain the standard MIDI
196	  baudrate of 31.25 kBaud, configure the clock of the underlying serial
197	  device so that a requested 38.4 kBaud will result in the standard speed.
198
199	  Use this devicetree binding to configure serial port mapping
200	  <file:Documentation/devicetree/bindings/sound/serial-midi.yaml>
201
202	  To compile this driver as a module, choose M here: the module
203	  will be called snd-serial-generic.
204
205config SND_MPU401
206	tristate "Generic MPU-401 UART driver"
207	depends on HAS_IOPORT
208	select SND_MPU401_UART
209	help
210	  Say Y here to include support for MIDI ports compatible with
211	  the Roland MPU-401 interface in UART mode.
212
213	  To compile this driver as a module, choose M here: the module
214	  will be called snd-mpu401.
215
216config SND_PORTMAN2X4
217	tristate "Portman 2x4 driver"
218	depends on PARPORT
219	select SND_RAWMIDI
220	help
221	  Say Y here to include support for Midiman Portman 2x4 parallel
222	  port MIDI device.
223
224	  To compile this driver as a module, choose M here: the module
225	  will be called snd-portman2x4.
226
227config SND_AC97_POWER_SAVE
228	bool "AC97 Power-Saving Mode"
229	depends on SND_AC97_CODEC
230	default n
231	help
232	  Say Y here to enable the aggressive power-saving support of
233	  AC97 codecs.  In this mode, the power-mode is dynamically
234	  controlled at each open/close.
235
236	  The mode is activated by passing 'power_save=X' to the
237	  snd-ac97-codec driver module, where 'X' is the time-out
238	  value, a nonnegative integer that specifies how many
239	  seconds of idle time the driver must count before it may
240	  put the AC97 into power-save mode;  a value of 0 (zero)
241	  disables the use of this power-save mode.
242
243	  After the snd-ac97-codec driver module has been loaded,
244	  the 'power_save' parameter can be set via sysfs as follows:
245
246	    echo 10 > /sys/module/snd_ac97_codec/parameters/power_save
247
248	  In this case, the time-out is set to 10 seconds; setting
249	  the time-out to 1 second (the minimum activation value)
250	  isn't recommended because many applications try to reopen
251	  the device frequently.  A value of 10 seconds would be a
252	  good choice for normal operations.
253
254	  See Documentation/sound/designs/powersave.rst for more details.
255
256config SND_AC97_POWER_SAVE_DEFAULT
257	int "Default time-out for AC97 power-save mode"
258	depends on SND_AC97_POWER_SAVE
259	default 0
260	help
261	  The default time-out value in seconds for AC97 automatic
262	  power-save mode.  0 means to disable the power-save mode.
263
264	  See SND_AC97_POWER_SAVE for more details.
265
266endif	# SND_DRIVERS
267