ALSA CVS update - Jaroslav Kysela <perex@suse.cz>

AC97 Codec Core
Kevin Mack <kevmack@accesscomm.ca>
Here's a quick and dirty patch that's given me basic sound from
my Gateway M675 notebook (Sigmatel 9758 AC97 codec).

include/sound/ac97_codec.h

@@ -226,10 +226,14 @@
 #define AC97_GPIO_LINE2_HL1R    0x8000  /* Opt./ Handset to Line2 relay control (out) */
 
 /* specific - SigmaTel */
+#define AC97_SIGMATEL_OUTSEL	0x64	/* Output Select, STAC9758 */
+#define AC97_SIGMATEL_INSEL	0x66	/* Input Select, STAC9758 */
+#define AC97_SIGMATEL_IOMISC	0x68	/* STAC9758 */
 #define AC97_SIGMATEL_ANALOG	0x6c	/* Analog Special */
 #define AC97_SIGMATEL_DAC2INVERT 0x6e
 #define AC97_SIGMATEL_BIAS1	0x70
 #define AC97_SIGMATEL_BIAS2	0x72
+#define AC97_SIGMATEL_VARIOUS	0x72	/* STAC9758 */
 #define AC97_SIGMATEL_MULTICHN	0x74	/* Multi-Channel programming */
 #define AC97_SIGMATEL_CIC1	0x76
 #define AC97_SIGMATEL_CIC2	0x78

sound/pci/ac97/ac97_codec.c

@@ -171,6 +171,7 @@ static const ac97_codec_id_t snd_ac97_codec_ids[] = {
 { 0x83847650, 0xffffffff, "STAC9750/51",	NULL,		NULL },	// patch?
 { 0x83847652, 0xffffffff, "STAC9752/53",	NULL,		NULL }, // patch?
 { 0x83847656, 0xffffffff, "STAC9756/57",	patch_sigmatel_stac9756,	NULL },
+{ 0x83847658, 0xffffffff, "STAC9758/59",	patch_sigmatel_stac9758,	NULL },
 { 0x83847666, 0xffffffff, "STAC9766/67",	NULL,		NULL }, // patch?
 { 0, 	      0,	  NULL,			NULL,		NULL }
 };

sound/pci/ac97/ac97_patch.c

@@ -447,6 +447,21 @@ int patch_sigmatel_stac9756(ac97_t * ac97)
 	return 0;
 }
 
+int patch_sigmatel_stac9758(ac97_t * ac97)
+{
+	// patch for SigmaTel
+	ac97->build_ops = &patch_sigmatel_stac9700_ops;
+	// turn on stereo speaker, headphone and line-out
+	snd_ac97_write_cache(ac97, AC97_SIGMATEL_OUTSEL, 0x9040);
+	// headphone select and boost
+	snd_ac97_write_cache(ac97, AC97_SIGMATEL_IOMISC, 0x2102);
+	// enable mic
+	snd_ac97_write_cache(ac97, AC97_SIGMATEL_INSEL, 0x0203);
+	// enable stereo mic
+	snd_ac97_write_cache(ac97, AC97_SIGMATEL_VARIOUS, 0x0001);
+	return 0;
+}
+
 /*
  * Cirrus Logic CS42xx codecs
  */

sound/pci/ac97/ac97_patch.h

@@ -34,6 +34,7 @@ int patch_sigmatel_stac9708(ac97_t * ac97);
 int patch_sigmatel_stac9721(ac97_t * ac97);
 int patch_sigmatel_stac9744(ac97_t * ac97);
 int patch_sigmatel_stac9756(ac97_t * ac97);
+int patch_sigmatel_stac9758(ac97_t * ac97);
 int patch_cirrus_cs4299(ac97_t * ac97);
 int patch_cirrus_spdif(ac97_t * ac97);
 int patch_conexant(ac97_t * ac97);