[linux-audio-dev] Re: [Alsa-devel] Fwd: Midiator MS-124w w/ALSA0.9.0beta12

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Subject: [linux-audio-dev] Re: [Alsa-devel] Fwd: Midiator MS-124w w/ALSA0.9.0beta12
From: Jaroslav Kysela (perex_AT_suse.cz)
Date: Mon Mar 04 2002 - 15:46:33 EET

On Mon, 4 Mar 2002, Darwin Marcus Johnson wrote:

> Hi All,
>
> I am trying to get my Midiator Midi interface working with ALSA0.9.0beta 12.
> I am trying to insert the snd-serial-u16550 module. My /etc/modules.conf
> seems to have the right options for this card.
>
> Does anyone have a Midiator Midi interface working with the ALSA support?
>
> Does anyone have another serial interface working with the snd-serial-u16550
> module?
>
> Can anyone point me to any documentation on setting up the modules beside
> the 1 page in the ALSA-HOWTO that contain this info below?
>
> Does any of this info below have some obvious over sights, mistakes,
> omissions?
>
> -Thanks
> Darwin
>
> >From the ALSA-HOWTO:
> ----snip------------------------
> snd_port - port # for UART16550A chip
> snd_irq - IRQ # for UART16550A chip, -1 = poll mode
> snd_divisor - divisor to calculate bit rate
> 115200bps / # - 3 = 38.4kbpsdefault
> snd_ports - number of MIDI ports 1,2,3,4 - 1 = default
> ----snip-----------------------
>
> # modprobe snd-serial-u16550
>
> I get these error messages:
> ----snip-----------------------
> Note: /etc/modules.conf is more recent than
> /lib/modules/2.4.18-rc1/modules.dep
> /lib/modules/2.4.18-rc1/kernel/driver/sound/snd-serial-u16550.o: init_module:
> No such device
> Hint: insmod errors can be caused by incorrect module parameters, including
> invalid IO or IRQ parameters
> /lib/modules/2.4.18-rc1/kernel/driver/sound/snd-serial-u16550.o: insmod
> /lib/modules/2.4.18-rc1/kernel/driver/sound/snd-serial-u16550.o failed
> /lib/modules/2.4.18-rc1/kernel/driver/sound/snd-serial-u16550.o: insmod
> snd-serial-u16550 failed
> ----snip-------------------------
>
> # setserial -a /dev/ttyS0
> /dev/ttyS0, Line 0, UART: 16550A, Port: 0x03f8, IRQ: 4
> Baud_base: 57600, close_delay: 50, divisor: 1
> closing_wait: 3000
> Flags: spd_normal skip_test

You must turn the default Linux serial driver off before trying the ALSA
driver:

setserial /dev/ttyS0 uart none

                                                Jaroslav

-----
Jaroslav Kysela <perex_AT_suse.cz>
Linux Kernel Sound Maintainer
ALSA Project http://www.alsa-project.org
SuSE Linux http://www.suse.com

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