In message "debugging azalia sound routing"
    on 06/10/10, Peter Seebach <seebs@plethora.net> writes:
> The macbook pro and the intel-based mac mini both use "azalia" sound hardware.
> 
> Both don't make any sound under NetBSD.
> 
> Both are subject to driver "fixes" for Linux, which appear to both involve
> rerouting sound, and doing something special and magical which applies only
> on the Mac hardware to control a special hardware mute feature, possibly
> related to their controls for internal vs. external speakers.

Would you open a PR for this, and test the following patch?

-- 
TAMURA Kent <kent_2006 at hauN.org> <kent at NetBSD.org>


Index: azalia_codec.c
===================================================================
RCS file: /cvsroot/src/sys/dev/pci/azalia_codec.c,v
retrieving revision 1.24
diff -u -r1.24 azalia_codec.c
--- azalia_codec.c	23 Jul 2006 16:05:21 -0000	1.24
+++ azalia_codec.c	22 Oct 2006 15:24:04 -0000
@@ -120,6 +120,7 @@
 static int	cmi9880_init_dacgroup(codec_t *);
 static int	cmi9880_mixer_init(codec_t *);
 static int	stac9221_init_dacgroup(codec_t *);
+static int	stac9221_mixer_init(codec_t *);
 static int	stac9220_mixer_init(codec_t *);
 
 
@@ -179,6 +180,7 @@
 	case 0x83847680:
 		this->name = "Sigmatel STAC9221";
 		this->init_dacgroup = stac9221_init_dacgroup;
+		this->mixer_init = stac9221_mixer_init;
 		break;
 	case 0x83847683:
 		this->name = "Sigmatel STAC9221D";
@@ -2520,6 +2522,8 @@
  * Sigmatel STAC9221 and STAC9221D
  * ---------------------------------------------------------------- */
 
+#define STAC9221_MAC	0x76808384
+
 static int
 stac9221_init_dacgroup(codec_t *this)
 {
@@ -2538,6 +2542,31 @@
 	return 0;
 }
 
+static int
+stac9221_mixer_init(codec_t *this)
+{
+	int err;
+
+	err = generic_mixer_init(this);
+	if (err)
+		return err;
+	if (this->subid == STAC9221_MAC) {
+		uint32_t data, mask, dir;
+		this->comresp(this, 0, CORB_GET_GPIO_DATA, 0, &data);
+		this->comresp(this, 0, CORB_GET_GPIO_ENABLE_MASK, 0, &mask);
+		this->comresp(this, 0, CORB_GET_GPIO_DIRECTION, 0, &dir);
+		data |= 0x3;
+		mask |= 0x3;
+		dir |= 0x3;
+		this->comresp(this, 0, 0x7e7, 0, NULL);
+		this->comresp(this, 0, CORB_SET_GPIO_ENABLE_MASK, mask, NULL);
+		this->comresp(this, 0, CORB_SET_GPIO_DIRECTION, dir, NULL);
+		DELAY(1000);
+		this->comresp(this, 0, CORB_SET_GPIO_DATA, data, NULL);
+	}
+	return 0;
+}
+
 /* ----------------------------------------------------------------
  * Sigmatel STAC9220
  * ---------------------------------------------------------------- */