[ALSA] hda-intel: support for iMac 24'' released on 09/2006

Basic audio support for the iMac 24'' model released on 09/2006,
including
headphone jack detection with automatic speaker muting.
This iMac uses the Realtek ALC885 codec, not a Sigmatel one as in
other models.
Functionality has been tested for internal speakers, headphone and
microphone.

Signed-off-by: Nicola Fagnani <nicfagn@iol.it>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>

2 files changed, 74 insertions, 1 deletions

diff --git a/Documentation/sound/alsa/ALSA-Configuration.txt b/Documentation/sound/alsa/ALSA-Configuration.txt
index 5bb45cd5f0e6..241e26c4ff92 100644
--- a/Documentation/sound/alsa/ALSA-Configuration.txt
+++ b/Documentation/sound/alsa/ALSA-Configuration.txt
@@ -843,6 +843,7 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
           6stack-dig    6-jack digital with SPDIF I/O
           arima         Arima W820Di1
           macpro        MacPro support
+          imac24        iMac 24'' with jack detection
           w2jc          ASUS W2JC
           auto          auto-config reading BIOS (default)
 
diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
index 5825d9958f34..9a47eec5a27b 100644
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -153,6 +153,7 @@ enum {
         ALC882_TARGA,
         ALC882_ASUS_A7J,
         ALC885_MACPRO,
+        ALC885_IMAC24,
         ALC882_AUTO,
         ALC882_MODEL_LAST,
 };
@@ -5118,6 +5119,60 @@ static struct hda_verb alc882_macpro_init_verbs[] = {
         { }
 };
 
+/* iMac 24 mixer. */
+static struct snd_kcontrol_new alc885_imac24_mixer[] = {
+        HDA_CODEC_VOLUME("Master Playback Volume", 0x0c, 0x00, HDA_OUTPUT),
+        HDA_CODEC_MUTE("Master Playback Switch", 0x0c, 0x00, HDA_INPUT),
+        { } /* end */
+};
+
+/* iMac 24 init verbs. */
+static struct hda_verb alc885_imac24_init_verbs[] = {
+        /* Internal speakers: output 0 (0x0c) */
+        {0x18, AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_OUT},
+        {0x18, AC_VERB_SET_AMP_GAIN_MUTE, AMP_OUT_UNMUTE},
+        {0x18, AC_VERB_SET_CONNECT_SEL, 0x00},
+        /* Internal speakers: output 0 (0x0c) */
+        {0x1a, AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_OUT},
+        {0x1a, AC_VERB_SET_AMP_GAIN_MUTE, AMP_OUT_UNMUTE},
+        {0x1a, AC_VERB_SET_CONNECT_SEL, 0x00},
+        /* Headphone: output 0 (0x0c) */
+        {0x14, AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_HP},
+        {0x14, AC_VERB_SET_AMP_GAIN_MUTE, AMP_OUT_UNMUTE},
+        {0x14, AC_VERB_SET_CONNECT_SEL, 0x00},
+        {0x14, AC_VERB_SET_UNSOLICITED_ENABLE, ALC880_HP_EVENT | AC_USRSP_EN},
+        /* Front Mic: input vref at 80% */
+        {0x19, AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_VREF80},
+        {0x19, AC_VERB_SET_AMP_GAIN_MUTE, AMP_OUT_MUTE},
+        { }
+};
+
+/* Toggle speaker-output according to the hp-jack state */
+static void alc885_imac24_automute(struct hda_codec *codec)
+{
+        unsigned int present;
+
+        present = snd_hda_codec_read(codec, 0x14, 0,
+                                     AC_VERB_GET_PIN_SENSE, 0) & 0x80000000;
+        snd_hda_codec_amp_update(codec, 0x18, 0, HDA_OUTPUT, 0,
+                                 0x80, present ? 0x80 : 0);
+        snd_hda_codec_amp_update(codec, 0x18, 1, HDA_OUTPUT, 0,
+                                 0x80, present ? 0x80 : 0);
+        snd_hda_codec_amp_update(codec, 0x1a, 0, HDA_OUTPUT, 0,
+                                 0x80, present ? 0x80 : 0);
+        snd_hda_codec_amp_update(codec, 0x1a, 1, HDA_OUTPUT, 0,
+                                 0x80, present ? 0x80 : 0);
+}
+
+/* Processes unsolicited events. */
+static void alc885_imac24_unsol_event(struct hda_codec *codec,
+                                      unsigned int res)
+{
+        /* Headphone insertion or removal. */
+        if ((res >> 26) == ALC880_HP_EVENT)
+                alc885_imac24_automute(codec);
+}
+
 static struct hda_verb alc882_targa_verbs[] = {
         {0x0c, AC_VERB_SET_AMP_GAIN_MUTE, AMP_IN_UNMUTE(0)},
         {0x0c, AC_VERB_SET_AMP_GAIN_MUTE, AMP_IN_UNMUTE(1)},
@@ -5338,6 +5393,7 @@ static const char *alc882_models[ALC882_MODEL_LAST] = {
         [ALC882_ARIMA]          = "arima",
         [ALC882_W2JC]           = "w2jc",
         [ALC885_MACPRO]         = "macpro",
+        [ALC885_IMAC24]         = "imac24",
         [ALC882_AUTO]           = "auto",
 };
 
@@ -5410,6 +5466,19 @@ static struct alc_config_preset alc882_presets[] = {
                 .channel_mode = alc882_ch_modes,
                 .input_mux = &alc882_capture_source,
         },
+        [ALC885_IMAC24] = {
+                .mixers = { alc885_imac24_mixer },
+                .init_verbs = { alc885_imac24_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_imac24_unsol_event,
+                .init_hook = alc885_imac24_automute,
+        },
         [ALC882_TARGA] = {
                 .mixers = { alc882_targa_mixer, alc882_chmode_mixer,
                             alc882_capture_mixer },
@@ -5582,6 +5651,9 @@ static int patch_alc882(struct hda_codec *codec)
                 case 0x106b0c00: /* Mac Pro */
                         board_config = ALC885_MACPRO;
                         break;
+                case 0x106b1000: /* iMac 24 */
+                        board_config = ALC885_IMAC24;
+                        break;
                 default:
                         printk(KERN_INFO "hda_codec: Unknown model for ALC882, "
                                          "trying auto-probe from BIOS...\n");
@@ -5608,7 +5680,7 @@ static int patch_alc882(struct hda_codec *codec)
         if (board_config != ALC882_AUTO)
                 setup_preset(spec, &alc882_presets[board_config]);
 
-        if (board_config == ALC885_MACPRO) {
+        if (board_config == ALC885_MACPRO || board_config == ALC885_IMAC24) {
                 alc882_gpio_mute(codec, 0, 0);
                 alc882_gpio_mute(codec, 1, 0);
         }