[alsa-devel] Issues and/or possible bugs in alsa

[Raymond Yau]

>
> I'm going to take a guess and conclude that there must be bugs in the
interface patch written for the realtek codecs. I happened to test two
other laptops and they worked just fine. (Intel...)
>
> ...I guess in should report a bug related to that realtek patch...
>
> •
>>>> >
>>>> > Is there anything else I need to do?
>>>>
>>>> Codec: Realtek ALC269VB
>>>> Address: 0
>>>> AFG Function Id: 0x1 (unsol 1)
>>>> Vendor Id: 0x10ec0269
>>>> Subsystem Id: 0x1179fa22
>>>> Revision Id: 0x100100
>>>> No Modem Function Group found
>>>> Default PCM:
>>>> N/A
>>>> Default Amp-In caps: N/A
>>>> Default Amp-Out caps: N/A
>>>> State of AFG node 0x01:
>>>>   Power: setting=UNKNOWN, actual=UNKNOWN, Error, Clock-stop-OK,
Setting-reset
>>>> Invalid AFG subtree

You need to find out what value return snd_hda_param_read()  in
snd_hda_get_sub_nodes ()

and value of pwr return by snd_hda_codec_read(codec, nid, 0,
     AC_VERB_GET_POWER_STATE, 0);

int snd_hda_get_sub_nodes(struct hda_codec *codec, hda_nid_t nid,
                        hda_nid_t *start_id)
{
         unsigned int parm;

        parm = snd_hda_param_read(codec, nid, AC_PAR_NODE_COUNT);
       if (parm == -1) {
              *start_id = 0
                 return 0;
      }
       *start_id = (parm >> 16) & 0x7fff;
      return (int)(parm & 0x7fff);
}
nodes = snd_hda_get_sub_nodes(codec, fg, &nid);
if (! nid || nodes < 0) {
snd_iprintf(buffer, "Invalid AFG subtree\n");
snd_hda_power_down(codec);
return;
}


Power: setting=UNKNOWN, actual=UNKNOWN, Error, Clock-stop-OK, Setting-reset

static const char *get_pwr_state(u32 state)
{
static const char * const buf[] = {
"D0", "D1", "D2", "D3", "D3cold"
};
if (state < ARRAY_SIZE(buf))
return buf[state];
return "UNKNOWN";
}


int sup = snd_hda_param_read(codec, nid, AC_PAR_POWER_STATE);
int pwr = snd_hda_codec_read(codec, nid, 0,
     AC_VERB_GET_POWER_STATE, 0);
if (sup != -1)
snd_iprintf(buffer, "  Power states: %s\n",
    bits_names(sup, names, ARRAY_SIZE(names)));

snd_iprintf(buffer, "  Power: setting=%s, actual=%s",
    get_pwr_state(pwr & AC_PWRST_SETTING),
    get_pwr_state((pwr & AC_PWRST_ACTUAL) >>
  AC_PWRST_ACTUAL_SHIFT));
if (pwr & AC_PWRST_ERROR)
snd_iprintf(buffer, ", Error");
if (pwr & AC_PWRST_CLK_STOP_OK)
snd_iprintf(buffer, ", Clock-stop-OK");
if (pwr & AC_PWRST_SETTING_RESET)
snd_iprintf(buffer, ", Setting-reset");
snd_iprintf(buffer, "\n");