uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
        uinfo->count = 1;
        uinfo->value.integer.min = 0;
-       uinfo->value.integer.max = 2;
+       uinfo->value.integer.max = 3;
        return 0;
 }
 
                                           struct snd_ctl_elem_value *ucontrol)
 {
        struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
-       int val;
+       int val = 0;
        unsigned long flags;
 
        spin_lock_irqsave(&chip->reg_lock, flags);
        if (chip->awacs_reg[6] & MASK_MIC_BOOST)
-               val = 2;
-       else if (chip->awacs_reg[0] & MASK_GAINLINE)
-               val = 1;
-       else
-               val = 0;
+               val |= 2;
+       if (chip->awacs_reg[0] & MASK_GAINLINE)
+               val |= 1;
        spin_unlock_irqrestore(&chip->reg_lock, flags);
        ucontrol->value.integer.value[0] = val;
        return 0;
        spin_lock_irqsave(&chip->reg_lock, flags);
        val0 = chip->awacs_reg[0] & ~MASK_GAINLINE;
        val6 = chip->awacs_reg[6] & ~MASK_MIC_BOOST;
-       if (ucontrol->value.integer.value[0] > 0) {
+       if (ucontrol->value.integer.value[0] & 1)
                val0 |= MASK_GAINLINE;
-               if (ucontrol->value.integer.value[0] > 1)
-                       val6 |= MASK_MIC_BOOST;
-       }
+       if (ucontrol->value.integer.value[0] & 2)
+               val6 |= MASK_MIC_BOOST;
        if (val0 != chip->awacs_reg[0]) {
                snd_pmac_awacs_write_reg(chip, 0, val0);
                changed = 1;
  * lists of mixer elements
  */
 static struct snd_kcontrol_new snd_pmac_awacs_mixers[] __initdata = {
-       AWACS_VOLUME("Master Playback Volume", 2, 6, 1),
        AWACS_SWITCH("Master Capture Switch", 1, SHIFT_LOOPTHRU, 0),
-       AWACS_VOLUME("Capture Volume", 0, 4, 0),
+       AWACS_VOLUME("Master Capture Volume", 0, 4, 0),
+/*     AWACS_SWITCH("Unknown Playback Switch", 6, SHIFT_PAROUT0, 0), */
+};
+
+static struct snd_kcontrol_new snd_pmac_screamer_mixers_beige[] __initdata = {
+       AWACS_VOLUME("Master Playback Volume", 2, 6, 1),
+       AWACS_VOLUME("Play-through Playback Volume", 5, 6, 1),
+       AWACS_SWITCH("Line Capture Switch", 0, SHIFT_MUX_MIC, 0),
+       AWACS_SWITCH("CD Capture Switch", 0, SHIFT_MUX_LINE, 0),
+};
+
+static struct snd_kcontrol_new snd_pmac_screamer_mixers_imac[] __initdata = {
+       AWACS_VOLUME("Line out Playback Volume", 2, 6, 1),
+       AWACS_VOLUME("Master Playback Volume", 5, 6, 1),
+       AWACS_SWITCH("CD Capture Switch", 0, SHIFT_MUX_CD, 0),
+};
+
+static struct snd_kcontrol_new snd_pmac_awacs_mixers_pmac7500[] __initdata = {
+       AWACS_VOLUME("Line out Playback Volume", 2, 6, 1),
+       AWACS_SWITCH("CD Capture Switch", 0, SHIFT_MUX_CD, 0),
+       AWACS_SWITCH("Line Capture Switch", 0, SHIFT_MUX_MIC, 0),
+};
+
+static struct snd_kcontrol_new snd_pmac_awacs_mixers_pmac[] __initdata = {
+       AWACS_VOLUME("Master Playback Volume", 2, 6, 1),
        AWACS_SWITCH("CD Capture Switch", 0, SHIFT_MUX_CD, 0),
 };
 
 static struct snd_kcontrol_new snd_pmac_awacs_master_sw __initdata =
 AWACS_SWITCH("Master Playback Switch", 1, SHIFT_HDMUTE, 1);
 
+static struct snd_kcontrol_new snd_pmac_awacs_master_sw_imac __initdata =
+AWACS_SWITCH("Line out Playback Switch", 1, SHIFT_HDMUTE, 1);
+
 static struct snd_kcontrol_new snd_pmac_awacs_mic_boost[] __initdata = {
-       AWACS_SWITCH("Mic Boost", 0, SHIFT_GAINLINE, 0),
+       AWACS_SWITCH("Mic Boost Capture Switch", 0, SHIFT_GAINLINE, 0),
 };
 
 static struct snd_kcontrol_new snd_pmac_screamer_mic_boost[] __initdata = {
        { .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
-         .name = "Mic Boost",
+         .name = "Mic Boost Capture Volume",
          .info = snd_pmac_screamer_mic_boost_info,
          .get = snd_pmac_screamer_mic_boost_get,
          .put = snd_pmac_screamer_mic_boost_put,
        },
 };
 
+static struct snd_kcontrol_new snd_pmac_awacs_mic_boost_pmac7500[] __initdata =
+{
+       AWACS_SWITCH("Line Boost Capture Switch", 0, SHIFT_GAINLINE, 0),
+};
+
+static struct snd_kcontrol_new snd_pmac_screamer_mic_boost_beige[] __initdata =
+{
+       AWACS_SWITCH("Line Boost Capture Switch", 0, SHIFT_GAINLINE, 0),
+       AWACS_SWITCH("CD Boost Capture Switch", 6, SHIFT_MIC_BOOST, 0),
+};
+
+static struct snd_kcontrol_new snd_pmac_screamer_mic_boost_imac[] __initdata =
+{
+       AWACS_SWITCH("Line Boost Capture Switch", 0, SHIFT_GAINLINE, 0),
+       AWACS_SWITCH("Mic Boost Capture Switch", 6, SHIFT_MIC_BOOST, 0),
+};
+
 static struct snd_kcontrol_new snd_pmac_awacs_speaker_vol[] __initdata = {
        AWACS_VOLUME("PC Speaker Playback Volume", 4, 6, 1),
 };
+
 static struct snd_kcontrol_new snd_pmac_awacs_speaker_sw __initdata =
 AWACS_SWITCH("PC Speaker Playback Switch", 1, SHIFT_SPKMUTE, 1);
 
+static struct snd_kcontrol_new snd_pmac_awacs_speaker_sw_imac __initdata =
+AWACS_SWITCH("PC Speaker Playback Switch", 1, SHIFT_PAROUT1, 0);
+
 
 /*
  * add new mixer elements to the card
 }
 #endif /* CONFIG_PM */
 
+#define IS_PM7500 (machine_is_compatible("AAPL,7500"))
+#define IS_BEIGE (machine_is_compatible("AAPL,Gossamer"))
+#define IS_IMAC (machine_is_compatible("PowerMac2,1") \
+               || machine_is_compatible("PowerMac2,2") \
+               || machine_is_compatible("PowerMac4,1"))
+
+static int imac;
+
 #ifdef PMAC_SUPPORT_AUTOMUTE
 /*
  * auto-mute stuffs
                } else
 #endif
                {
-                       int reg = chip->awacs_reg[1] | (MASK_HDMUTE|MASK_SPKMUTE);
+                       int reg = chip->awacs_reg[1]
+                               | (MASK_HDMUTE | MASK_SPKMUTE);
+                       if (imac) {
+                               reg &= ~MASK_SPKMUTE;
+                               reg &= ~MASK_PAROUT1;
+                       }
                        if (snd_pmac_awacs_detect_headphone(chip))
                                reg &= ~MASK_HDMUTE;
+                       else if (imac)
+                               reg |= MASK_PAROUT1;
                        else
                                reg &= ~MASK_SPKMUTE;
                        if (do_notify && reg == chip->awacs_reg[1])
 int __init
 snd_pmac_awacs_init(struct snd_pmac *chip)
 {
+       int pm7500 = IS_PM7500;
+       int beige = IS_BEIGE;
        int err, vol;
 
+       imac = IS_IMAC;
        /* looks like MASK_GAINLINE triggers something, so we set here
         * as start-up
         */
                /* set headphone-jack detection bit */
                switch (chip->model) {
                case PMAC_AWACS:
-                       chip->hp_stat_mask = 0x04;
+                       chip->hp_stat_mask = pm7500 ? MASK_HDPCONN
+                               : MASK_LOCONN;
                        break;
                case PMAC_SCREAMER:
                        switch (chip->device_id) {
                        case 0x08:
-                               /* 1 = side jack, 2 = front jack */
-                               chip->hp_stat_mask = 0x03;
+                       case 0x0B:
+                               chip->hp_stat_mask = imac
+                                       ? MASK_LOCONN_IMAC |
+                                       MASK_HDPLCONN_IMAC |
+                                       MASK_HDPRCONN_IMAC
+                                       : MASK_HDPCONN;
                                break;
                        case 0x00:
                        case 0x05:
-                               chip->hp_stat_mask = 0x04;
+                               chip->hp_stat_mask = MASK_LOCONN;
                                break;
                        default:
-                               chip->hp_stat_mask = 0x08;
+                               chip->hp_stat_mask = MASK_HDPCONN;
                                break;
                        }
                        break;
        if ((err = build_mixers(chip, ARRAY_SIZE(snd_pmac_awacs_mixers),
                                snd_pmac_awacs_mixers)) < 0)
                return err;
-       if (chip->model == PMAC_SCREAMER)
+       if (beige)
+               ;
+       else if (chip->model == PMAC_SCREAMER)
                err = build_mixers(chip, ARRAY_SIZE(snd_pmac_screamer_mixers2),
                                   snd_pmac_screamer_mixers2);
-       else
+       else if (!pm7500)
                err = build_mixers(chip, ARRAY_SIZE(snd_pmac_awacs_mixers2),
                                   snd_pmac_awacs_mixers2);
        if (err < 0)
                return err;
-       chip->master_sw_ctl = snd_ctl_new1(&snd_pmac_awacs_master_sw, chip);
+       if (pm7500)
+               err = build_mixers(chip,
+                                  ARRAY_SIZE(snd_pmac_awacs_mixers_pmac7500),
+                                  snd_pmac_awacs_mixers_pmac7500);
+       else if (beige)
+               err = build_mixers(chip,
+                                  ARRAY_SIZE(snd_pmac_screamer_mixers_beige),
+                                  snd_pmac_screamer_mixers_beige);
+       else if (imac)
+               err = build_mixers(chip,
+                                  ARRAY_SIZE(snd_pmac_screamer_mixers_imac),
+                                  snd_pmac_screamer_mixers_imac);
+       else
+               err = build_mixers(chip,
+                                  ARRAY_SIZE(snd_pmac_awacs_mixers_pmac),
+                                  snd_pmac_awacs_mixers_pmac);
+       if (err < 0)
+               return err;
+       chip->master_sw_ctl = snd_ctl_new1((pm7500 || imac)
+                       ? &snd_pmac_awacs_master_sw_imac
+                       : &snd_pmac_awacs_master_sw, chip);
        if ((err = snd_ctl_add(chip->card, chip->master_sw_ctl)) < 0)
                return err;
 #ifdef PMAC_AMP_AVAIL
                if ((err = build_mixers(chip, ARRAY_SIZE(snd_pmac_awacs_speaker_vol),
                                        snd_pmac_awacs_speaker_vol)) < 0)
                        return err;
-               chip->speaker_sw_ctl = snd_ctl_new1(&snd_pmac_awacs_speaker_sw, chip);
+               chip->speaker_sw_ctl = snd_ctl_new1(imac
+                               ? &snd_pmac_awacs_speaker_sw_imac
+                               : &snd_pmac_awacs_speaker_sw, chip);
                if ((err = snd_ctl_add(chip->card, chip->speaker_sw_ctl)) < 0)
                        return err;
        }
 
-       if (chip->model == PMAC_SCREAMER) {
-               if ((err = build_mixers(chip, ARRAY_SIZE(snd_pmac_screamer_mic_boost),
-                                       snd_pmac_screamer_mic_boost)) < 0)
-                       return err;
-       } else {
-               if ((err = build_mixers(chip, ARRAY_SIZE(snd_pmac_awacs_mic_boost),
-                                       snd_pmac_awacs_mic_boost)) < 0)
-                       return err;
-       }
+       if (beige)
+               err = build_mixers(chip,
+                               ARRAY_SIZE(snd_pmac_screamer_mic_boost_beige),
+                               snd_pmac_screamer_mic_boost_beige);
+       else if (imac)
+               err = build_mixers(chip,
+                               ARRAY_SIZE(snd_pmac_screamer_mic_boost_imac),
+                               snd_pmac_screamer_mic_boost_imac);
+       else if (chip->model == PMAC_SCREAMER)
+               err = build_mixers(chip,
+                               ARRAY_SIZE(snd_pmac_screamer_mic_boost),
+                               snd_pmac_screamer_mic_boost);
+       else if (pm7500)
+               err = build_mixers(chip,
+                               ARRAY_SIZE(snd_pmac_awacs_mic_boost_pmac7500),
+                               snd_pmac_awacs_mic_boost_pmac7500);
+       else
+               err = build_mixers(chip, ARRAY_SIZE(snd_pmac_awacs_mic_boost),
+                               snd_pmac_awacs_mic_boost);
+       if (err < 0)
+               return err;
 
        /*
         * set lowlevel callbacks