[linux-dvb] device file ordering w/multiple cards

[linux-dvb] device file ordering w/multiple cards

[Joseph Shraibman]

I have two dvb cards in my system.  Is there any way to change the order 
of the device files?

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Re: [linux-dvb] device file ordering w/multiple cards

[e9hack]

Joseph Shraibman schrieb:
> I have two dvb cards in my system.  Is there any way to change the order 
> of the device files?

Usually, the device files (/dev/dvb/adapter?/..) are create by a udev-rule. If you modify
the rule, you can assign every dvb card to a specific number. In my case, I'm using Suse,
which comes withe following udev rule in /etc/udev/rules.d/50-udev-default.rules:
# DVB video
SUBSYSTEM=="dvb", PROGRAM="/bin/sh -c 'K=%k; K=$${K#dvb}; printf dvb/adapter%%i/%%s
$${K%%%%.*} $${K#*.}'", NAME="%c"

I've two DVB cards, one FF and one budget. The FF should be always the adapter #0. I've
disabled the default DVB rule and add my one rule, which assigns the numbers depend on the
 pci vendor/device numbers:
# DVB video
#SUBSYSTEM=="dvb", PROGRAM="/bin/sh -c 'K=%k; K=$${K#dvb}; printf dvb/adapter%%i/%%s
$${K%%%%.*} $${K#*.}'", NAME="%c"
SUBSYSTEM=="dvb", SYSFS{subsystem_device}=="0x1156", SYSFS{subsystem_vendor}=="0x153b",
PROGRAM="/bin/sh -c 'K=%k; K=$${K#dvb}; printf dvb/adapter%%i/%%s 1 $${K#*.}'", NAME="%c
SUBSYSTEM=="dvb", SYSFS{subsystem_device}=="0x000a", SYSFS{subsystem_vendor}=="0x13c2",
PROGRAM="/bin/sh -c 'K=%k; K=$${K#dvb}; printf dvb/adapter%%i/%%s 0 $${K#*.}'", NAME="%c

If you use two identical cards, you can use the pci slot number:
# DVB video
#SUBSYSTEM=="dvb", PROGRAM="/bin/sh -c 'K=%k; K=$${K#dvb}; printf dvb/adapter%%i/%%s
$${K%%%%.*} $${K#*.}'", NAME="%c"
SUBSYSTEM=="dvb", SUBSYSTEMS=="pci", KERNELS=="0000:04:07.0", PROGRAM="/bin/sh -c 'K=%k;
K=$${K#dvb}; printf dvb/adapter%%i/%%s 1 $${K#*.}'", NAME="%c"
SUBSYSTEM=="dvb", SUBSYSTEMS=="pci", KERNELS=="0000:04:06.0", PROGRAM="/bin/sh -c 'K=%k;
K=$${K#dvb}; printf dvb/adapter%%i/%%s 0 $${K#*.}'", NAME="%c"

Regards,
Hartmut

Re: [linux-dvb] device file ordering w/multiple cards

[Andy Zivkovic]

Joseph Shraibman wrote:
> I have two dvb cards in my system.  Is there any way to change the order 
> of the device files?

If the different cards use different drivers, you can pass the 
adapter_nr parameter to the module.

In my /etc/modprobe.conf I have:
options dvb_usb_dib0700 adapter_nr=0,1,2,3
options mantis adapter_nr=4


Andy

Re: [linux-dvb] device file ordering w/multiple cards

[Jaap Crezee]

Andy Zivkovic wrote:
> Joseph Shraibman wrote:
> I have two dvb cards in my system.  Is there any way to change the order 
> of the device files?

It might also be possible to use udev for this kind of ordering. Maybe just like the persistent-[net|storage] scripts in
/etc/udev/rules.d

Regards,

Jaap Crezee