From: Takashi Iwai <tiwai@suse.de>
To: Wu Fengguang <fengguang.wu@intel.com>
Cc: alsa-devel@alsa-project.org
Subject: Re: PROC_COEF/PROC_INDEX question
Date: Fri, 07 Aug 2009 11:45:14 +0200 [thread overview]
Message-ID: <s5hmy6cyn2t.wl%tiwai@suse.de> (raw)
In-Reply-To: <20090807093859.GA2155@localhost>
At Fri, 7 Aug 2009 17:38:59 +0800,
Wu Fengguang wrote:
>
> Hello,
>
> I'm not sure of the usage for GET_PROC_COEF/GET_COEF_INDEX, and found
> that their return value is unstable (changing all the time) for codec:
>
> Codec: Realtek ALC888
> Address: 2
> Function Id: 0x1
> Vendor Id: 0x10ec0888
> Subsystem Id: 0x80860023
> Revision Id: 0x100202
>
> For example:
>
> # hda-verb /dev/snd/hwC0D2 0x20 GET_PROC_COEF 0
> nid = 0x20, verb = 0xc00, param = 0x0
> value = 0x80
> # hda-verb /dev/snd/hwC0D2 0x20 GET_COEF_INDEX 0
> nid = 0x20, verb = 0xd00, param = 0x0
> value = 0xe
> # hda-verb /dev/snd/hwC0D2 0x20 GET_PROC_COEF 0
> nid = 0x20, verb = 0xc00, param = 0x0
> value = 0x9c00
> # hda-verb /dev/snd/hwC0D2 0x20 GET_COEF_INDEX 0
> nid = 0x20, verb = 0xd00, param = 0x0
> value = 0xf
>
> I wonder if this is the normal case?
AFAIK, depending on the mode, the index is incremented automatically.
Takashi
next prev parent reply other threads:[~2009-08-07 9:45 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-08-07 9:38 PROC_COEF/PROC_INDEX question Wu Fengguang
2009-08-07 9:45 ` Takashi Iwai [this message]
2009-08-07 10:01 ` Wu Fengguang
2009-08-07 10:05 ` Takashi Iwai
2009-08-07 10:12 ` Wu Fengguang
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