From: Sedji Gaouaou <sedji.gaouaou@atmel.com>
To: alsa-devel@alsa-project.org
Subject: pb with AC'97 codec on atmel at91 boards
Date: Mon, 25 May 2009 17:15:44 +0200 [thread overview]
Message-ID: <4A1AB620.5090108@atmel.com> (raw)
Hi all,
I am currently working on an AC'97 driver for ATMEL boards(AT91), and I
encounter some problems.
On the board we have an AD1981b, and looking at the file ac97_patch.c I
was wondering in the function patch_ad1881 why is there 3 codecs?
I've got the AD1981b datasheet, but the registers description is not
really clear to me(vendor id register).
My problem is: when I try to read this registers(vendor id) during the
probe(in snd_ac97_mixer), it will fail, and from time to time I will
even not be able to recognize the codec...
So my question is: is that normal that in the function patch_ad1881 the
code fails to read these lines:
codecs[1] = patch_ad1881_unchained(ac97, 1, (1<<14));
codecs[2] = patch_ad1881_unchained(ac97, 2, (1<<13));
Regards,
Sedji
reply other threads:[~2009-05-25 15:28 UTC|newest]
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