[alsa-devel] LSI HDA Modem is not working on HP new Laptop which has IDT 7605 HDA codec and REDHAT installed on it with ALSA ver 1.0.24.

Raymond Yau superquad.vortex2 at gmail.com
Mon Oct 3 03:35:59 CEST 2011

2011/10/1 Takashi Iwai <tiwai at suse.de>:
>> >
>> >> 2. Why Analog devices codec (patch_analog.c) clear
>> >> AC_VERB_SET_CHANNEL_STREAMID on close? (if (do_now)
>> >>    really_cleanup_stream(codec, p);
>> >
>> > It's because AD codecs (according to bug reports) don't like the
>> > sticky-tag feature by some reason.  It'll be removed, once when the
>> > real culprit is found.
>> >
>> >
>> http://thread.gmane.org/gmane.linux.alsa.devel/78379
>> Can the converters can retrain the stream tag after suspend/resume ?
> No.  The flag is cleared in the suspend.

The main difference is only AD codecs have Power widget but driver
does not has init verbs for this [Power widget]

e.g. ad1988 has 9 widets support power states ,

Table 13 Widet Parameters (Power states 0f)
Five [Audio Output] , three [Audio Input] and [Power widget] have 00000009

Table 10
No. Name                    Description
19 Mixer Power Down   Power widget Powers down the analog mixer and
associated amps
23 VREF Power Down Vendor defined Powers down the internal and
external VREF circularity
2f BIAS Power Down Vendor defined Powers down the internal

Node 0x19 [Power Widget] wcaps 0x500500: Mono
  Power states:  D0 D3
  Power: setting=D0, actual=D0
  Connection: 2
     0x20 0x21

There are two vendor defined widgets (VREF power down and BIAS power pown)

Node 0x23 [Vendor Defined Widget] wcaps 0xf00100: Mono
  Connection: 18
     0x11* 0x12 0x13 0x14 0x15 0x16 0x17 0x18 0x24 0x25 0x38 0x39 0x3a
0x3b 0x3c

Node 0x2f [Vendor Defined Widget] wcaps 0xf00100: Mono
  Connection: 6
     0x11* 0x12 0x14 0x15 0x16 0x17

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