diff -ru alsa-driver-1.0.15/alsa-kernel/pci/hda/patch_realtek.c alsa-driver-1.0.15-patched/alsa-kernel/pci/hda/patch_realtek.c
--- alsa-driver-1.0.15/alsa-kernel/pci/hda/patch_realtek.c	2007-10-15 10:45:06.000000000 +0200
+++ alsa-driver-1.0.15-patched/alsa-kernel/pci/hda/patch_realtek.c	2007-11-03 16:18:38.000000000 +0100
@@ -159,6 +159,7 @@
 	ALC885_MACPRO,
 	ALC885_MBP3,
 	ALC885_IMAC24,
+	ALC885_IMAC_M07,
 	ALC882_AUTO,
 	ALC882_MODEL_LAST,
 };
@@ -5313,6 +5314,56 @@
 		alc885_imac24_automute(codec);
 }
 
+/* iMac (mid 2007) mixer. */
+static struct snd_kcontrol_new alc885_imac_m07_mixer[] = {
+	HDA_CODEC_VOLUME("Master Playback Volume", 0x0c, 0x00, HDA_OUTPUT),
+	HDA_CODEC_MUTE("Master Playback Switch", 0x0c, 0x00, HDA_INPUT),
+	{ } /* end */
+};
+
+/* iMac (mid 2007) init verbs. */
+static struct hda_verb alc885_imac_m07_init_verbs[] = {
+	/* Internal speakers: output 0 (0x0c) */
+	{0x14, AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_OUT},
+	{0x14, AC_VERB_SET_AMP_GAIN_MUTE, AMP_OUT_UNMUTE},
+	{0x14, AC_VERB_SET_CONNECT_SEL, 0x00},
+	/* Internal speakers: output 0 (0x0c) */
+	{0x16, AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_OUT},
+	{0x16, AC_VERB_SET_AMP_GAIN_MUTE, AMP_OUT_UNMUTE},
+	{0x16, AC_VERB_SET_CONNECT_SEL, 0x00},
+	/* Headphone: output 0 (0x0c) */
+	{0x15, AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_HP},
+	{0x15, AC_VERB_SET_AMP_GAIN_MUTE, AMP_OUT_UNMUTE},
+	{0x15, AC_VERB_SET_CONNECT_SEL, 0x00},
+	{0x15, AC_VERB_SET_UNSOLICITED_ENABLE, ALC880_HP_EVENT | AC_USRSP_EN},
+	/* Front Mic: input vref at 80% */
+	{0x18, AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_VREF80},
+	{0x18, AC_VERB_SET_AMP_GAIN_MUTE, AMP_OUT_MUTE},
+	{ }
+};
+
+/* Toggle speaker-output according to the hp-jack state */
+static void alc885_imac_m07_automute(struct hda_codec *codec)
+{
+ 	unsigned int present;
+
+ 	present = snd_hda_codec_read(codec, 0x15, 0,
+				     AC_VERB_GET_PIN_SENSE, 0) & 0x80000000;
+	snd_hda_codec_amp_stereo(codec, 0x14, HDA_OUTPUT, 0,
+				 HDA_AMP_MUTE, present ? HDA_AMP_MUTE : 0);
+	snd_hda_codec_amp_stereo(codec, 0x16, HDA_OUTPUT, 0,
+				 HDA_AMP_MUTE, present ? HDA_AMP_MUTE : 0);
+}
+
+/* Processes unsolicited events. */
+static void alc885_imac_m07_unsol_event(struct hda_codec *codec,
+				      unsigned int res)
+{
+	/* Headphone insertion or removal. */
+	if ((res >> 26) == ALC880_HP_EVENT)
+		alc885_imac_m07_automute(codec);
+}
+
 static void alc885_mbp3_automute(struct hda_codec *codec)
 {
  	unsigned int present;
@@ -5457,6 +5508,13 @@
 	alc885_imac24_automute(codec);
 }
 
+/* set up GPIO and update auto-muting at initialization */
+static void alc885_imac_m07_init_hook(struct hda_codec *codec)
+{
+	alc885_macpro_init_hook(codec);
+	alc885_imac_m07_automute(codec);
+}
+
 /*
  * generic initialization of ADC, input mixers and output mixers
  */
@@ -5594,6 +5652,7 @@
 	[ALC885_MACPRO]		= "macpro",
 	[ALC885_MBP3]		= "mbp3",
 	[ALC885_IMAC24]		= "imac24",
+	[ALC885_IMAC_M07]	= "imac-m07",
 	[ALC882_AUTO]		= "auto",
 };
 
@@ -5696,6 +5755,19 @@
 		.unsol_event = alc885_imac24_unsol_event,
 		.init_hook = alc885_imac24_init_hook,
 	},
+	[ALC885_IMAC_M07] = {
+		.mixers = { alc885_imac_m07_mixer },
+		.init_verbs = { alc885_imac_m07_init_verbs },
+		.num_dacs = ARRAY_SIZE(alc882_dac_nids),
+		.dac_nids = alc882_dac_nids,
+		.dig_out_nid = ALC882_DIGOUT_NID,
+		.dig_in_nid = ALC882_DIGIN_NID,
+		.num_channel_mode = ARRAY_SIZE(alc882_ch_modes),
+		.channel_mode = alc882_ch_modes,
+		.input_mux = &alc882_capture_source,
+		.unsol_event = alc885_imac_m07_unsol_event,
+		.init_hook = alc885_imac_m07_init_hook,
+	},
 	[ALC882_TARGA] = {
 		.mixers = { alc882_targa_mixer, alc882_chmode_mixer,
 			    alc882_capture_mixer },
@@ -5914,12 +5986,16 @@
 		case 0x106b0c00: /* Mac Pro */
 			board_config = ALC885_MACPRO;
 			break;
-		case 0x106b1000: /* iMac 24 */
+		case 0x106b1000: /* iMac 24'' late 2006 */
 			board_config = ALC885_IMAC24;
 			break;
 		case 0x106b2c00: /* Macbook Pro rev3 */
 			board_config = ALC885_MBP3;
 			break;
+		case 0x106b3000: /* iMac 20 '' mid 2007 */
+		case 0x106b3200: /* iMac 24 '' mid 2007 */
+			board_config = ALC885_IMAC_M07;
+			break;
 		default:
 			printk(KERN_INFO "hda_codec: Unknown model for ALC882, "
 		       			 "trying auto-probe from BIOS...\n");