xref: /openbmc/linux/sound/drivers/Kconfig (revision ac8fd122) 
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 sychronization 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_VIRMIDI
113	tristate "Virtual MIDI soundcard"
114	depends on SND_SEQUENCER
115	select SND_TIMER
116	select SND_RAWMIDI
117	select SND_SEQ_VIRMIDI
118	select SND_SEQ_MIDI_EVENT
119	help
120	  Say Y here to include the virtual MIDI driver.  This driver
121	  allows to connect applications using raw MIDI devices to
122	  sequencer clients.
123
124	  If you don't know what MIDI is, say N here.
125
126	  To compile this driver as a module, choose M here: the module
127	  will be called snd-virmidi.
128
129config SND_MTPAV
130	tristate "MOTU MidiTimePiece AV multiport MIDI"
131	select SND_RAWMIDI
132	help
133	  To use a MOTU MidiTimePiece AV multiport MIDI adapter
134	  connected to the parallel port, say Y here and make sure that
135	  the standard parallel port driver isn't used for the port.
136
137	  To compile this driver as a module, choose M here: the module
138	  will be called snd-mtpav.
139
140config SND_MTS64
141	tristate "ESI Miditerminal 4140 driver"
142	depends on PARPORT
143	select SND_RAWMIDI
144	help
145	  The ESI Miditerminal 4140 is a 4 In 4 Out MIDI Interface with
146	  additional SMPTE Timecode capabilities for the parallel port.
147
148	  Say 'Y' to include support for this device.
149
150	  To compile this driver as a module, chose 'M' here: the module
151	  will be called snd-mts64.
152
153config SND_SERIAL_U16550
154	tristate "UART16550 serial MIDI driver"
155	select SND_RAWMIDI
156	help
157	  To include support for MIDI serial port interfaces, say Y here
158	  and read <file:Documentation/sound/cards/serial-u16550.rst>.
159	  This driver works with serial UARTs 16550 and better.
160
161	  This driver accesses the serial port hardware directly, so
162	  make sure that the standard serial driver isn't used or
163	  deactivated with setserial before loading this driver.
164
165	  To compile this driver as a module, choose M here: the module
166	  will be called snd-serial-u16550.
167
168config SND_MPU401
169	tristate "Generic MPU-401 UART driver"
170	select SND_MPU401_UART
171	help
172	  Say Y here to include support for MIDI ports compatible with
173	  the Roland MPU-401 interface in UART mode.
174
175	  To compile this driver as a module, choose M here: the module
176	  will be called snd-mpu401.
177
178config SND_PORTMAN2X4
179	tristate "Portman 2x4 driver"
180	depends on PARPORT
181	select SND_RAWMIDI
182	help
183	  Say Y here to include support for Midiman Portman 2x4 parallel
184	  port MIDI device.
185
186	  To compile this driver as a module, choose M here: the module
187	  will be called snd-portman2x4.
188
189config SND_ML403_AC97CR
190	tristate "Xilinx ML403 AC97 Controller Reference"
191	depends on XILINX_VIRTEX
192	select SND_AC97_CODEC
193	help
194	  Say Y here to include support for the
195	  opb_ac97_controller_ref_v1_00_a ip core found in Xilinx's ML403
196	  reference design.
197
198	  To compile this driver as a module, choose M here: the module
199	  will be called snd-ml403_ac97cr.
200
201config SND_AC97_POWER_SAVE
202	bool "AC97 Power-Saving Mode"
203	depends on SND_AC97_CODEC
204	default n
205	help
206	  Say Y here to enable the aggressive power-saving support of
207	  AC97 codecs.  In this mode, the power-mode is dynamically
208	  controlled at each open/close.
209
210	  The mode is activated by passing 'power_save=X' to the
211	  snd-ac97-codec driver module, where 'X' is the time-out
212	  value, a nonnegative integer that specifies how many
213	  seconds of idle time the driver must count before it may
214	  put the AC97 into power-save mode;  a value of 0 (zero)
215	  disables the use of this power-save mode.
216
217	  After the snd-ac97-codec driver module has been loaded,
218	  the 'power_save' parameter can be set via sysfs as follows:
219
220	    echo 10 > /sys/module/snd_ac97_codec/parameters/power_save
221
222	  In this case, the time-out is set to 10 seconds; setting
223	  the time-out to 1 second (the minimum activation value)
224	  isn't recommended because many applications try to reopen
225	  the device frequently.  A value of 10 seconds would be a
226	  good choice for normal operations.
227
228	  See Documentation/sound/designs/powersave.rst for more details.
229
230config SND_AC97_POWER_SAVE_DEFAULT
231	int "Default time-out for AC97 power-save mode"
232	depends on SND_AC97_POWER_SAVE
233	default 0
234	help
235	  The default time-out value in seconds for AC97 automatic
236	  power-save mode.  0 means to disable the power-save mode.
237
238	  See SND_AC97_POWER_SAVE for more details.
239
240endif	# SND_DRIVERS
241