At Tue, 29 May 2007 17:06:05 +0200,
I wrote:
>
> At Sun, 27 May 2007 23:33:27 +0100,
> Ivan N. Zlatev wrote:
> >
> > Hello,
> >
> > I am on an iMac ("*imac-20" model/pinconfig) with a Intel HD card with
> > the SigmaTel STAC9221 codec. I have attached the inital codec info
> > after modprobe. When I plug in and then unplug my speakers the
> > microphone stops working. Reproduction steps with codec dump diffs as
> > follows
>
> I guess you can restore the status via toggling "Line In as Output
> Switch" and "Mic as Output Switch" mixer elements. The problem looks
> like the unsolicited event handling. It doesn't cope with the shared
> input jacks well.
In case my guess is correct, the patch below should fix the problem.
Give it a try.
Takashi
diff -r ff3ed7049f84 pci/hda/patch_sigmatel.c
--- a/pci/hda/patch_sigmatel.c Tue May 29 16:03:00 2007 +0200
+++ b/pci/hda/patch_sigmatel.c Tue May 29 17:25:52 2007 +0200
@@ -1797,6 +1797,21 @@ static void stac92xx_set_pinctl(struct h
unsigned int pin_ctl = snd_hda_codec_read(codec, nid,
0, AC_VERB_GET_PIN_WIDGET_CONTROL, 0x00);
+ if (pin_ctl & AC_PINCTL_IN_EN) {
+ /*
+ * we need to check the current set-up direction of
+ * shared input pins since they can be switched via
+ * "xxx as Output" mixer switch
+ */
+ struct sigmatel_spec *spec = codec->spec;
+ struct auto_pin_cfg *cfg = &spec->autocfg;
+ if ((nid == cfg->input_pins[AUTO_PIN_LINE] &&
+ spec->line_switch) ||
+ (nid == cfg->input_pins[AUTO_PIN_MIC] &&
+ spec->mic_switch))
+ return;
+ }
+
/* if setting pin direction bits, clear the current
direction bits first */
if (flag & (AC_PINCTL_IN_EN | AC_PINCTL_OUT_EN))
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