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* why would i *not* be able to update a register in ac97#0-0+regs when it's read write?
@ 2007-02-17  1:08 John Utz
  2007-02-17  1:24 ` Lee Revell
  0 siblings, 1 reply; 9+ messages in thread
From: John Utz @ 2007-02-17  1:08 UTC (permalink / raw)
  To: alsa-devel


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Hello;

I have debugging turned on (--with-debug=detect) and the file is listed as writable:

ls -l /proc/asound/card0/codec97#0/ac97#0-0+regs
-rw-r--r-- 1 root root 0 Feb 16 08:47 /proc/asound/card0/codec97#0/ac97#0-0+regs

but i get no joy in the file:

cat /proc/asound/card0/codec97#0/ac97#0-0+regs | grep 0:60
0:60 = 0000

echo 60 1 > /proc/asound/card0/codec97#0/ac97#0-0+regs
cat /proc/asound/card0/codec97#0/ac97#0-0+regs | grep 0:60
0:60 = 0000

the doc asserts that the register is rw:

Note that this is from the docs for the via vt1618

Vendor Defined Register (Page ID = 00h)
UAJ Control
Index: 60h                                                           Default Value: 0038h
    Bit     Attr. Description
   15:6      RO   Reserved
    5:4     RW    UAJ_2 (pin 21/22) Control
                  00: Reserved
                  01: Output from DAC_2 without analog mixing
                  10: Input as Line-In signal
                  11: Input as MIC1 & MIC2 signals (default)
    3:2     RW    UAJ_1 (pin 23/24) Control
                  00: Reserved
                  01: Output from DAC_1 without analog mixing
                  10: Input as Line-In signal (default)
                  11: Input as MIC1 & MIC2 signals
    1:0     RW    UAJ_0 (pin 35/36) Control
                  00: Output from DAC_0 with analog mixing (default)
                  01: Output from DAC_0 without analog mixing
                  10: Input as Line-In signal
                  11: Input as MIC1 & MIC2 signals


i believe that i want to set these to the 01 setting so that i can get surround out from Universal Audio Jacks on our MSI motherboard samples

am i barking up the wrong tree here?

tnx!

johnu

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^ permalink raw reply	[flat|nested] 9+ messages in thread

end of thread, other threads:[~2007-02-21 19:11 UTC | newest]

Thread overview: 9+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2007-02-17  1:08 why would i *not* be able to update a register in ac97#0-0+regs when it's read write? John Utz
2007-02-17  1:24 ` Lee Revell
2007-02-17  1:52   ` John Utz
2007-02-17  2:01     ` Lee Revell
2007-02-20 17:46       ` John Utz
     [not found]       ` <F8FB97052F1BEF409F7842E960E49B5AAAF899@sea-exch-01.na.corp.dmxmusic. com>
     [not found]         ` <F8FB97052F1BEF409F7842E960E49B5AAAF899@sea-exch-01.na.corp.dmxmusic.co m>
2007-02-21  7:29           ` Clemens Ladisch
2007-02-21 17:44             ` John Utz
2007-02-21 19:11               ` SUCCESS!!! " John Utz
2007-02-17 11:40   ` Takashi Iwai

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