diff options
Diffstat (limited to 'src/udev/rules/78-sound-card.rules')
| -rw-r--r-- | src/udev/rules/78-sound-card.rules | 89 |
1 files changed, 0 insertions, 89 deletions
diff --git a/src/udev/rules/78-sound-card.rules b/src/udev/rules/78-sound-card.rules deleted file mode 100644 index e564441893..0000000000 --- a/src/udev/rules/78-sound-card.rules +++ /dev/null @@ -1,89 +0,0 @@ -# do not edit this file, it will be overwritten on update - -SUBSYSTEM!="sound", GOTO="sound_end" - -ACTION=="add|change", KERNEL=="controlC*", ATTR{../uevent}="change" -ACTION!="change", GOTO="sound_end" - -# Ok, we probably need a little explanation here for what the two lines above -# are good for. -# -# The story goes like this: when ALSA registers a new sound card it emits a -# series of 'add' events to userspace, for the main card device and for all the -# child device nodes that belong to it. udev relays those to applications, -# however only maintains the order between father and child, but not between -# the siblings. The control device node creation can be used as synchronization -# point. All other devices that belong to a card are created in the kernel -# before it. However unfortunately due to the fact that siblings are forwarded -# out of order by udev this fact is lost to applications. -# -# OTOH before an application can open a device it needs to make sure that all -# its device nodes are completely created and set up. -# -# As a workaround for this issue we have added the udev rule above which will -# generate a 'change' event on the main card device from the 'add' event of the -# card's control device. Due to the ordering semantics of udev this event will -# only be relayed after all child devices have finished processing properly. -# When an application needs to listen for appearing devices it can hence look -# for 'change' events only, and ignore the actual 'add' events. -# -# When the application is initialized at the same time as a device is plugged -# in it may need to figure out if the 'change' event has already been triggered -# or not for a card. To find that out we store the flag environment variable -# SOUND_INITIALIZED on the device which simply tells us if the card 'change' -# event has already been processed. - -KERNEL!="card*", GOTO="sound_end" - -ENV{SOUND_INITIALIZED}="1" - -SUBSYSTEMS=="usb", IMPORT{builtin}="usb_id" -SUBSYSTEMS=="usb", IMPORT{builtin}="usb-db" -SUBSYSTEMS=="usb", GOTO="skip_pci" - -SUBSYSTEMS=="firewire", ATTRS{vendor_name}=="?*", ATTRS{model_name}=="?*", \ - ENV{ID_BUS}="firewire", ENV{ID_VENDOR}="$attr{vendor_name}", ENV{ID_MODEL}="$attr{model_name}" -SUBSYSTEMS=="firewire", ATTRS{guid}=="?*", ENV{ID_ID}="firewire-$attr{guid}" -SUBSYSTEMS=="firewire", GOTO="skip_pci" - - -SUBSYSTEMS=="pci", IMPORT{builtin}="pci-db" -SUBSYSTEMS=="pci", ENV{ID_BUS}="pci", ENV{ID_VENDOR_ID}="$attr{vendor}", ENV{ID_MODEL_ID}="$attr{device}" - -LABEL="skip_pci" - -ENV{ID_SERIAL}=="?*", ENV{ID_USB_INTERFACE_NUM}=="?*", ENV{ID_ID}="$env{ID_BUS}-$env{ID_SERIAL}-$env{ID_USB_INTERFACE_NUM}-$attr{id}" -ENV{ID_SERIAL}=="?*", ENV{ID_USB_INTERFACE_NUM}=="", ENV{ID_ID}="$env{ID_BUS}-$env{ID_SERIAL}-$attr{id}" - -IMPORT{builtin}="path_id" - -# The values used here for $SOUND_FORM_FACTOR and $SOUND_CLASS should be kept -# in sync with those defined for PulseAudio's src/pulse/proplist.h -# PA_PROP_DEVICE_FORM_FACTOR, PA_PROP_DEVICE_CLASS properties. - -# If the first PCM device of this card has the pcm class 'modem', then the card is a modem -ATTR{pcmC%nD0p/pcm_class}=="modem", ENV{SOUND_CLASS}="modem", GOTO="sound_end" - -# Identify cards on the internal PCI bus as internal -SUBSYSTEMS=="pci", DEVPATH=="*/0000:00:??.?/sound/*", ENV{SOUND_FORM_FACTOR}="internal", GOTO="sound_end" - -# Devices that also support Image/Video interfaces are most likely webcams -SUBSYSTEMS=="usb", ENV{ID_USB_INTERFACES}=="*:0e????:*", ENV{SOUND_FORM_FACTOR}="webcam", GOTO="sound_end" - -# Matching on the model strings is a bit ugly, I admit -ENV{ID_MODEL}=="*[Ss]peaker*", ENV{SOUND_FORM_FACTOR}="speaker", GOTO="sound_end" -ENV{ID_MODEL_FROM_DATABASE}=="*[Ss]peaker*", ENV{SOUND_FORM_FACTOR}="speaker", GOTO="sound_end" - -ENV{ID_MODEL}=="*[Hh]eadphone*", ENV{SOUND_FORM_FACTOR}="headphone", GOTO="sound_end" -ENV{ID_MODEL_FROM_DATABASE}=="*[Hh]eadphone*", ENV{SOUND_FORM_FACTOR}="headphone", GOTO="sound_end" - -ENV{ID_MODEL}=="*[Hh]eadset*", ENV{SOUND_FORM_FACTOR}="headset", GOTO="sound_end" -ENV{ID_MODEL_FROM_DATABASE}=="*[Hh]eadset*", ENV{SOUND_FORM_FACTOR}="headset", GOTO="sound_end" - -ENV{ID_MODEL}=="*[Hh]andset*", ENV{SOUND_FORM_FACTOR}="handset", GOTO="sound_end" -ENV{ID_MODEL_FROM_DATABASE}=="*[Hh]andset*", ENV{SOUND_FORM_FACTOR}="handset", GOTO="sound_end" - -ENV{ID_MODEL}=="*[Mm]icrophone*", ENV{SOUND_FORM_FACTOR}="microphone", GOTO="sound_end" -ENV{ID_MODEL_FROM_DATABASE}=="*[Mm]icrophone*", ENV{SOUND_FORM_FACTOR}="microphone", GOTO="sound_end" - -LABEL="sound_end" |