1 # SPDX-License-Identifier: GPL-2.0-only 1 # SPDX-License-Identifier: GPL-2.0-only
2 config SND_MPU401_UART 2 config SND_MPU401_UART
3 tristate 3 tristate
4 select SND_RAWMIDI 4 select SND_RAWMIDI
5 5
6 config SND_OPL3_LIB 6 config SND_OPL3_LIB
7 tristate 7 tristate
8 select SND_TIMER 8 select SND_TIMER
9 select SND_HWDEP 9 select SND_HWDEP
10 select SND_SEQ_DEVICE if SND_SEQUENCER 10 select SND_SEQ_DEVICE if SND_SEQUENCER != n
11 11
12 config SND_OPL4_LIB 12 config SND_OPL4_LIB
13 tristate 13 tristate
14 select SND_TIMER 14 select SND_TIMER
15 select SND_HWDEP 15 select SND_HWDEP
16 select SND_SEQ_DEVICE if SND_SEQUENCER 16 select SND_SEQ_DEVICE if SND_SEQUENCER != n
17 17
18 # select SEQ stuff to min(SND_SEQUENCER,SND_XX 18 # select SEQ stuff to min(SND_SEQUENCER,SND_XXX)
19 config SND_OPL3_LIB_SEQ 19 config SND_OPL3_LIB_SEQ
20 def_tristate SND_SEQUENCER && SND_OPL3 20 def_tristate SND_SEQUENCER && SND_OPL3_LIB
21 select SND_SEQ_MIDI_EMUL 21 select SND_SEQ_MIDI_EMUL
22 select SND_SEQ_MIDI_EVENT 22 select SND_SEQ_MIDI_EVENT
23 23
24 config SND_OPL4_LIB_SEQ 24 config SND_OPL4_LIB_SEQ
25 def_tristate SND_SEQUENCER && SND_OPL4 25 def_tristate SND_SEQUENCER && SND_OPL4_LIB
26 select SND_SEQ_MIDI_EMUL 26 select SND_SEQ_MIDI_EMUL
27 select SND_SEQ_MIDI_EVENT 27 select SND_SEQ_MIDI_EVENT
28 28
29 config SND_VX_LIB 29 config SND_VX_LIB
30 tristate 30 tristate
31 select FW_LOADER 31 select FW_LOADER
32 select SND_HWDEP 32 select SND_HWDEP
33 select SND_PCM 33 select SND_PCM
34 34
35 config SND_AC97_CODEC 35 config SND_AC97_CODEC
36 tristate 36 tristate
37 select SND_PCM 37 select SND_PCM
38 select AC97_BUS 38 select AC97_BUS
39 select SND_VMASTER 39 select SND_VMASTER
40 40
41 menuconfig SND_DRIVERS 41 menuconfig SND_DRIVERS
42 bool "Generic sound devices" 42 bool "Generic sound devices"
43 default y 43 default y
44 help 44 help
45 Support for generic sound devices. 45 Support for generic sound devices.
46 46
47 if SND_DRIVERS 47 if SND_DRIVERS
48 48
49 config SND_PCSP 49 config SND_PCSP
50 tristate "PC-Speaker support (READ HEL 50 tristate "PC-Speaker support (READ HELP!)"
51 depends on PCSPKR_PLATFORM && X86 && H 51 depends on PCSPKR_PLATFORM && X86 && HIGH_RES_TIMERS
52 depends on INPUT 52 depends on INPUT
53 select SND_PCM 53 select SND_PCM
54 help 54 help
55 If you don't have a sound card in yo 55 If you don't have a sound card in your computer, you can include a
56 driver for the PC speaker which allo 56 driver for the PC speaker which allows it to act like a primitive
57 sound card. 57 sound card.
58 This driver also replaces the pcspkr 58 This driver also replaces the pcspkr driver for beeps.
59 59
60 You can compile this as a module whi 60 You can compile this as a module which will be called snd-pcsp.
61 61
62 WARNING: if you already have a sound 62 WARNING: if you already have a soundcard, enabling this
63 driver may lead to a problem. Namely 63 driver may lead to a problem. Namely, it may get loaded
64 before the other sound driver of you 64 before the other sound driver of yours, making the
65 pc-speaker a default sound device. W 65 pc-speaker a default sound device. Which is likely not
66 what you want. To make this driver p 66 what you want. To make this driver play nicely with other
67 sound driver, you can add this in a 67 sound driver, you can add this in a configuration file under
68 /etc/modprobe.d/ directory: 68 /etc/modprobe.d/ directory:
69 options snd-pcsp index=2 69 options snd-pcsp index=2
70 70
71 You don't need this driver if you on 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 ha 72 You don't need this driver if you have a tablet piezo beeper
73 in your PC instead of the real speak 73 in your PC instead of the real speaker.
74 74
75 Say N if you have a sound card. 75 Say N if you have a sound card.
76 Say M if you don't. 76 Say M if you don't.
77 Say Y only if you really know what y 77 Say Y only if you really know what you do.
78 78
79 config SND_DUMMY 79 config SND_DUMMY
80 tristate "Dummy (/dev/null) soundcard" 80 tristate "Dummy (/dev/null) soundcard"
81 select SND_PCM 81 select SND_PCM
82 help 82 help
83 Say Y here to include the dummy driv 83 Say Y here to include the dummy driver. This driver does
84 nothing, but emulates various mixer 84 nothing, but emulates various mixer controls and PCM devices.
85 85
86 You don't need this unless you're te 86 You don't need this unless you're testing the hardware support
87 of programs using the ALSA API. 87 of programs using the ALSA API.
88 88
89 To compile this driver as a module, 89 To compile this driver as a module, choose M here: the module
90 will be called snd-dummy. 90 will be called snd-dummy.
91 91
92 config SND_ALOOP 92 config SND_ALOOP
93 tristate "Generic loopback driver (PCM 93 tristate "Generic loopback driver (PCM)"
94 select SND_PCM 94 select SND_PCM
95 select SND_TIMER 95 select SND_TIMER
96 help 96 help
97 Say 'Y' or 'M' to include support fo 97 Say 'Y' or 'M' to include support for the PCM loopback device.
98 This module returns played samples b 98 This module returns played samples back to the user space using
99 the standard ALSA PCM device. The de 99 the standard ALSA PCM device. The devices are routed 0->1 and
100 1->0, where first number is the play 100 1->0, where first number is the playback PCM device and second
101 number is the capture device. Module 101 number is the capture device. Module creates two PCM devices and
102 configured number of substreams (see 102 configured number of substreams (see the pcm_substreams module
103 parameter). 103 parameter).
104 104
105 The loopback device allows time sync 105 The loopback device allows time synchronization with an external
106 timing source using the time shift u 106 timing source using the time shift universal control (+-20%
107 of system time). 107 of system time).
108 108
109 To compile this driver as a module, 109 To compile this driver as a module, choose M here: the module
110 will be called snd-aloop. 110 will be called snd-aloop.
111 111
112 config SND_PCMTEST 112 config SND_PCMTEST
113 tristate "Virtual PCM test driver" 113 tristate "Virtual PCM test driver"
114 depends on DEBUG_FS <<
115 select SND_PCM 114 select SND_PCM
116 help 115 help
117 Say 'Y' or 'M' to include support fo 116 Say 'Y' or 'M' to include support for the Virtual PCM test driver.
118 This driver is aimed at extended tes 117 This driver is aimed at extended testing of the userspace applications
119 which use the ALSA API, as well as t 118 which use the ALSA API, as well as the PCM middle layer testing.
120 119
121 It can generate random or pattern-ba 120 It can generate random or pattern-based data into the capture stream,
122 check the playback stream for contai 121 check the playback stream for containing the selected pattern, inject
123 time delays during capture/playback, 122 time delays during capture/playback, redefine the RESET ioctl operation
124 to perform the PCM middle layer test 123 to perform the PCM middle layer testing and inject errors during the
125 PCM callbacks. It supports both inte 124 PCM callbacks. It supports both interleaved and non-interleaved access
126 modes. You can find the correspondin 125 modes. You can find the corresponding selftest in the 'alsa'
127 selftests folder. 126 selftests folder.
128 127
129 config SND_VIRMIDI 128 config SND_VIRMIDI
130 tristate "Virtual MIDI soundcard" 129 tristate "Virtual MIDI soundcard"
131 depends on SND_SEQUENCER 130 depends on SND_SEQUENCER
132 select SND_TIMER 131 select SND_TIMER
133 select SND_RAWMIDI 132 select SND_RAWMIDI
134 select SND_SEQ_VIRMIDI 133 select SND_SEQ_VIRMIDI
135 select SND_SEQ_MIDI_EVENT 134 select SND_SEQ_MIDI_EVENT
136 help 135 help
137 Say Y here to include the virtual MI 136 Say Y here to include the virtual MIDI driver. This driver
138 allows to connect applications using 137 allows to connect applications using raw MIDI devices to
139 sequencer clients. 138 sequencer clients.
140 139
141 If you don't know what MIDI is, say 140 If you don't know what MIDI is, say N here.
142 141
143 To compile this driver as a module, 142 To compile this driver as a module, choose M here: the module
144 will be called snd-virmidi. 143 will be called snd-virmidi.
145 144
146 config SND_MTPAV 145 config SND_MTPAV
147 tristate "MOTU MidiTimePiece AV multip 146 tristate "MOTU MidiTimePiece AV multiport MIDI"
148 depends on HAS_IOPORT 147 depends on HAS_IOPORT
149 select SND_RAWMIDI 148 select SND_RAWMIDI
150 help 149 help
151 To use a MOTU MidiTimePiece AV multi 150 To use a MOTU MidiTimePiece AV multiport MIDI adapter
152 connected to the parallel port, say 151 connected to the parallel port, say Y here and make sure that
153 the standard parallel port driver is 152 the standard parallel port driver isn't used for the port.
154 153
155 To compile this driver as a module, 154 To compile this driver as a module, choose M here: the module
156 will be called snd-mtpav. 155 will be called snd-mtpav.
157 156
158 config SND_MTS64 157 config SND_MTS64
159 tristate "ESI Miditerminal 4140 driver 158 tristate "ESI Miditerminal 4140 driver"
160 depends on PARPORT 159 depends on PARPORT
161 select SND_RAWMIDI 160 select SND_RAWMIDI
162 help 161 help
163 The ESI Miditerminal 4140 is a 4 In 162 The ESI Miditerminal 4140 is a 4 In 4 Out MIDI Interface with
164 additional SMPTE Timecode capabiliti 163 additional SMPTE Timecode capabilities for the parallel port.
165 164
166 Say 'Y' to include support for this 165 Say 'Y' to include support for this device.
167 166
168 To compile this driver as a module, 167 To compile this driver as a module, chose 'M' here: the module
169 will be called snd-mts64. 168 will be called snd-mts64.
170 169
171 config SND_SERIAL_U16550 170 config SND_SERIAL_U16550
172 tristate "UART16550 serial MIDI driver 171 tristate "UART16550 serial MIDI driver"
173 depends on HAS_IOPORT 172 depends on HAS_IOPORT
174 select SND_RAWMIDI 173 select SND_RAWMIDI
175 help 174 help
176 To include support for MIDI serial p 175 To include support for MIDI serial port interfaces, say Y here
177 and read <file:Documentation/sound/c 176 and read <file:Documentation/sound/cards/serial-u16550.rst>.
178 This driver works with serial UARTs 177 This driver works with serial UARTs 16550 and better.
179 178
180 This driver accesses the serial port 179 This driver accesses the serial port hardware directly, so
181 make sure that the standard serial d 180 make sure that the standard serial driver isn't used or
182 deactivated with setserial before lo 181 deactivated with setserial before loading this driver.
183 182
184 To compile this driver as a module, 183 To compile this driver as a module, choose M here: the module
185 will be called snd-serial-u16550. 184 will be called snd-serial-u16550.
186 185
187 config SND_SERIAL_GENERIC 186 config SND_SERIAL_GENERIC
188 tristate "Generic serial MIDI driver" 187 tristate "Generic serial MIDI driver"
189 depends on SERIAL_DEV_BUS 188 depends on SERIAL_DEV_BUS
190 depends on OF 189 depends on OF
191 select SND_RAWMIDI 190 select SND_RAWMIDI
192 help 191 help
193 To include support for mapping gener 192 To include support for mapping generic serial devices as raw
194 ALSA MIDI devices, say Y here. The d 193 ALSA MIDI devices, say Y here. The driver only supports setting
195 the serial port to standard baudrate 194 the serial port to standard baudrates. To attain the standard MIDI
196 baudrate of 31.25 kBaud, configure t 195 baudrate of 31.25 kBaud, configure the clock of the underlying serial
197 device so that a requested 38.4 kBau 196 device so that a requested 38.4 kBaud will result in the standard speed.
198 197
199 Use this devicetree binding to confi 198 Use this devicetree binding to configure serial port mapping
200 <file:Documentation/devicetree/bindi 199 <file:Documentation/devicetree/bindings/sound/serial-midi.yaml>
201 200
202 To compile this driver as a module, 201 To compile this driver as a module, choose M here: the module
203 will be called snd-serial-generic. 202 will be called snd-serial-generic.
204 203
205 config SND_MPU401 204 config SND_MPU401
206 tristate "Generic MPU-401 UART driver" 205 tristate "Generic MPU-401 UART driver"
207 depends on HAS_IOPORT 206 depends on HAS_IOPORT
208 select SND_MPU401_UART 207 select SND_MPU401_UART
209 help 208 help
210 Say Y here to include support for MI 209 Say Y here to include support for MIDI ports compatible with
211 the Roland MPU-401 interface in UART 210 the Roland MPU-401 interface in UART mode.
212 211
213 To compile this driver as a module, 212 To compile this driver as a module, choose M here: the module
214 will be called snd-mpu401. 213 will be called snd-mpu401.
215 214
216 config SND_PORTMAN2X4 215 config SND_PORTMAN2X4
217 tristate "Portman 2x4 driver" 216 tristate "Portman 2x4 driver"
218 depends on PARPORT 217 depends on PARPORT
219 select SND_RAWMIDI 218 select SND_RAWMIDI
220 help 219 help
221 Say Y here to include support for Mi 220 Say Y here to include support for Midiman Portman 2x4 parallel
222 port MIDI device. 221 port MIDI device.
223 222
224 To compile this driver as a module, 223 To compile this driver as a module, choose M here: the module
225 will be called snd-portman2x4. 224 will be called snd-portman2x4.
226 225
227 config SND_AC97_POWER_SAVE 226 config SND_AC97_POWER_SAVE
228 bool "AC97 Power-Saving Mode" 227 bool "AC97 Power-Saving Mode"
229 depends on SND_AC97_CODEC 228 depends on SND_AC97_CODEC
230 default n 229 default n
231 help 230 help
232 Say Y here to enable the aggressive 231 Say Y here to enable the aggressive power-saving support of
233 AC97 codecs. In this mode, the powe 232 AC97 codecs. In this mode, the power-mode is dynamically
234 controlled at each open/close. 233 controlled at each open/close.
235 234
236 The mode is activated by passing 'po 235 The mode is activated by passing 'power_save=X' to the
237 snd-ac97-codec driver module, where 236 snd-ac97-codec driver module, where 'X' is the time-out
238 value, a nonnegative integer that sp 237 value, a nonnegative integer that specifies how many
239 seconds of idle time the driver must 238 seconds of idle time the driver must count before it may
240 put the AC97 into power-save mode; 239 put the AC97 into power-save mode; a value of 0 (zero)
241 disables the use of this power-save 240 disables the use of this power-save mode.
242 241
243 After the snd-ac97-codec driver modu 242 After the snd-ac97-codec driver module has been loaded,
244 the 'power_save' parameter can be se 243 the 'power_save' parameter can be set via sysfs as follows:
245 244
246 echo 10 > /sys/module/snd_ac97_cod 245 echo 10 > /sys/module/snd_ac97_codec/parameters/power_save
247 246
248 In this case, the time-out is set to 247 In this case, the time-out is set to 10 seconds; setting
249 the time-out to 1 second (the minimu 248 the time-out to 1 second (the minimum activation value)
250 isn't recommended because many appli 249 isn't recommended because many applications try to reopen
251 the device frequently. A value of 1 250 the device frequently. A value of 10 seconds would be a
252 good choice for normal operations. 251 good choice for normal operations.
253 252
254 See Documentation/sound/designs/powe 253 See Documentation/sound/designs/powersave.rst for more details.
255 254
256 config SND_AC97_POWER_SAVE_DEFAULT 255 config SND_AC97_POWER_SAVE_DEFAULT
257 int "Default time-out for AC97 power-s 256 int "Default time-out for AC97 power-save mode"
258 depends on SND_AC97_POWER_SAVE 257 depends on SND_AC97_POWER_SAVE
259 default 0 258 default 0
260 help 259 help
261 The default time-out value in second 260 The default time-out value in seconds for AC97 automatic
262 power-save mode. 0 means to disable 261 power-save mode. 0 means to disable the power-save mode.
263 262
264 See SND_AC97_POWER_SAVE for more det 263 See SND_AC97_POWER_SAVE for more details.
265 264
266 endif # SND_DRIVERS 265 endif # SND_DRIVERS
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