| Kconfig (d9a145fb6e5f37b9903dea8371ab5c3e34e8e2d1) | Kconfig (597603d615d2b19a9e451d8cfac24372856a522d) |
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| 1config SND_MPU401_UART 2 tristate 3 select SND_RAWMIDI 4 5config SND_OPL3_LIB 6 tristate 7 select SND_TIMER 8 select SND_HWDEP --- 60 unchanged lines hidden (view full) --- 69 nothing, but emulates various mixer controls and PCM devices. 70 71 You don't need this unless you're testing the hardware support 72 of programs using the ALSA API. 73 74 To compile this driver as a module, choose M here: the module 75 will be called snd-dummy. 76 | 1config SND_MPU401_UART 2 tristate 3 select SND_RAWMIDI 4 5config SND_OPL3_LIB 6 tristate 7 select SND_TIMER 8 select SND_HWDEP --- 60 unchanged lines hidden (view full) --- 69 nothing, but emulates various mixer controls and PCM devices. 70 71 You don't need this unless you're testing the hardware support 72 of programs using the ALSA API. 73 74 To compile this driver as a module, choose M here: the module 75 will be called snd-dummy. 76 |
| 77config SND_ALOOP 78 tristate "Generic loopback driver (PCM)" 79 select SND_PCM 80 help 81 Say 'Y' or 'M' to include support for the PCM loopback device. 82 This module returns played samples back to the user space using 83 the standard ALSA PCM device. The devices are routed 0->1 and 84 1->0, where first number is the playback PCM device and second 85 number is the capture device. Module creates two PCM devices and 86 configured number of substreams (see the pcm_substreams module 87 parameter). 88 89 The looback device allow time sychronization with an external 90 timing source using the time shift universal control (+-20% 91 of system time). 92 93 To compile this driver as a module, choose M here: the module 94 will be called snd-aloop. 95 |
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| 77config SND_VIRMIDI 78 tristate "Virtual MIDI soundcard" 79 depends on SND_SEQUENCER 80 select SND_TIMER 81 select SND_RAWMIDI 82 help 83 Say Y here to include the virtual MIDI driver. This driver 84 allows to connect applications using raw MIDI devices to --- 65 unchanged lines hidden (view full) --- 150 will be called snd-portman2x4. 151 152config SND_ML403_AC97CR 153 tristate "Xilinx ML403 AC97 Controller Reference" 154 depends on XILINX_VIRTEX 155 select SND_AC97_CODEC 156 help 157 Say Y here to include support for the | 96config SND_VIRMIDI 97 tristate "Virtual MIDI soundcard" 98 depends on SND_SEQUENCER 99 select SND_TIMER 100 select SND_RAWMIDI 101 help 102 Say Y here to include the virtual MIDI driver. This driver 103 allows to connect applications using raw MIDI devices to --- 65 unchanged lines hidden (view full) --- 169 will be called snd-portman2x4. 170 171config SND_ML403_AC97CR 172 tristate "Xilinx ML403 AC97 Controller Reference" 173 depends on XILINX_VIRTEX 174 select SND_AC97_CODEC 175 help 176 Say Y here to include support for the |
| 158 opb_ac97_controller_ref_v1_00_a ip core found in Xilinx's ML403 | 177 opb_ac97_controller_ref_v1_00_a ip core found in Xilinx' ML403 |
| 159 reference design. 160 161 To compile this driver as a module, choose M here: the module 162 will be called snd-ml403_ac97cr. 163 164config SND_AC97_POWER_SAVE 165 bool "AC97 Power-Saving Mode" 166 depends on SND_AC97_CODEC 167 default n 168 help 169 Say Y here to enable the aggressive power-saving support of 170 AC97 codecs. In this mode, the power-mode is dynamically 171 controlled at each open/close. 172 | 178 reference design. 179 180 To compile this driver as a module, choose M here: the module 181 will be called snd-ml403_ac97cr. 182 183config SND_AC97_POWER_SAVE 184 bool "AC97 Power-Saving Mode" 185 depends on SND_AC97_CODEC 186 default n 187 help 188 Say Y here to enable the aggressive power-saving support of 189 AC97 codecs. In this mode, the power-mode is dynamically 190 controlled at each open/close. 191 |
| 173 The mode is activated by passing 'power_save=X' to the 174 snd-ac97-codec driver module, where 'X' is the time-out 175 value, a nonnegative integer that specifies how many 176 seconds of idle time the driver must count before it may 177 put the AC97 into power-save mode; a value of 0 (zero) 178 disables the use of this power-save mode. | 192 The mode is activated by passing power_save=1 option to 193 snd-ac97-codec driver. You can toggle it dynamically over 194 sysfs, too. |
| 179 | 195 |
| 180 After the snd-ac97-codec driver module has been loaded, 181 the 'power_save' parameter can be set via sysfs as follows: 182 183 echo 10 > /sys/module/snd_ac97_codec/parameters/power_save 184 185 In this case, the time-out is set to 10 seconds; setting 186 the time-out to 1 second (the minimum activation value) 187 isn't recommended because many applications try to reopen 188 the device frequently. A value of 10 seconds would be a 189 good choice for normal operations. 190 191 See Documentation/sound/alsa/powersave.txt for more details. 192 | |
| 193config SND_AC97_POWER_SAVE_DEFAULT 194 int "Default time-out for AC97 power-save mode" 195 depends on SND_AC97_POWER_SAVE 196 default 0 197 help 198 The default time-out value in seconds for AC97 automatic 199 power-save mode. 0 means to disable the power-save mode. 200 | 196config SND_AC97_POWER_SAVE_DEFAULT 197 int "Default time-out for AC97 power-save mode" 198 depends on SND_AC97_POWER_SAVE 199 default 0 200 help 201 The default time-out value in seconds for AC97 automatic 202 power-save mode. 0 means to disable the power-save mode. 203 |
| 201 See SND_AC97_POWER_SAVE for more details. 202 | |
| 203endif # SND_DRIVERS | 204endif # SND_DRIVERS |