[alsa-devel] PROC_COEF/PROC_INDEX question

[Wu Fengguang]

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?

Thanks,
Fengguang