mirror of
https://github.com/systemd/systemd.git
synced 2024-11-14 15:21:37 +03:00
ed1b2d9fc7
If two USB sound cards that have the same serial number are plugged in make sure ID_ID is unique at least during runtime, by including the ALSA card id in the ID_ID string. Fixes issues like this one: http://pulseaudio.org/ticket/661
93 lines
4.8 KiB
Plaintext
93 lines
4.8 KiB
Plaintext
# 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", ENV{ID_MODEL}=="", IMPORT{program}="usb_id --export %p"
|
|
SUBSYSTEMS=="usb", ENV{ID_VENDOR_FROM_DATABASE}=="", IMPORT{program}="usb-db %p"
|
|
SUBSYSTEMS=="usb", ATTRS{idVendor}!="", ATTRS{idProduct}!="", ENV{ID_VENDOR_ID}="$attr{idVendor}", ENV{ID_MODEL_ID}="$attr{idProduct}"
|
|
SUBSYSTEMS=="usb", ATTRS{bInterfaceNumber}!="", ENV{ID_IFACE}="$attr{bInterfaceNumber}"
|
|
SUBSYSTEMS=="usb", GOTO="skip_pci"
|
|
|
|
SUBSYSTEMS=="pci", ENV{ID_VENDOR_FROM_DATABASE}=="", IMPORT{program}="pci-db %p"
|
|
SUBSYSTEMS=="pci", ENV{ID_BUS}="pci", ENV{ID_VENDOR_ID}="$attr{vendor}", ENV{ID_MODEL_ID}="$attr{device}"
|
|
|
|
LABEL="skip_pci"
|
|
|
|
ENV{ID_SERIAL}=="?*", ENV{ID_IFACE}=="?*", ENV{ID_ID}="$env{ID_BUS}-$env{ID_SERIAL}-$env{ID_IFACE}-$attr{id}"
|
|
ENV{ID_SERIAL}=="?*", ENV{ID_IFACE}=="", ENV{ID_ID}="$env{ID_BUS}-$env{ID_SERIAL}-$attr{id}"
|
|
|
|
ENV{ID_PATH}=="", IMPORT{program}="path_id %p/controlC%n"
|
|
|
|
# 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"
|
|
|
|
# Recognize good old WinTV cards and those based on saa7134 as TV cards
|
|
SUBSYSTEMS=="pci", DRIVERS=="Bt87x", ENV{SOUND_FORM_FACTOR}="tv", GOTO="sound_end"
|
|
SUBSYSTEMS=="pci", DRIVERS=="saa7134", ENV{SOUND_FORM_FACTOR}="tv", GOTO="sound_end"
|
|
|
|
# Hmm, do we really want this database here?
|
|
SUBSYSTEMS=="usb", ATTRS{idVendor}=="0471", ATTRS{idProduct}=="0311", ENV{SOUND_FORM_FACTOR}="webcam", 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"
|