ALSA: Add vmaster controls for Pmac 5500, iMac G3 SL, and PBook G3 Lombard

Add virtual master controls for PowerMac 5500 (AWACS) and iMac G3 Slot-loading
and PowerBook G3 Lombard (Screamer).

Signed-off-by: Risto Suominen <Risto.Suominen@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

2 files changed, 69 insertions, 6 deletions

diff --git a/sound/ppc/Kconfig b/sound/ppc/Kconfig
index 777de2b17178..bd2338ab2ced 100644
--- a/sound/ppc/Kconfig
+++ b/sound/ppc/Kconfig
@@ -13,6 +13,7 @@ config SND_POWERMAC
         tristate "PowerMac (AWACS, DACA, Burgundy, Tumbler, Keywest)"
         depends on I2C && INPUT && PPC_PMAC
         select SND_PCM
+        select SND_VMASTER
         help
           Say Y here to include support for the integrated sound device.
 
diff --git a/sound/ppc/awacs.c b/sound/ppc/awacs.c
index 9abbf645eb67..80df9b1f651e 100644
--- a/sound/ppc/awacs.c
+++ b/sound/ppc/awacs.c
@@ -608,9 +608,12 @@ static struct snd_kcontrol_new snd_pmac_screamer_mixers_beige[] __initdata = {
         AWACS_SWITCH("CD Capture Switch", 0, SHIFT_MUX_LINE, 0),
 };
 
-static struct snd_kcontrol_new snd_pmac_screamer_mixers_imac[] __initdata = {
+static struct snd_kcontrol_new snd_pmac_screamer_mixers_lo[] __initdata = {
         AWACS_VOLUME("Line out Playback Volume", 2, 6, 1),
-        AWACS_VOLUME("Master Playback Volume", 5, 6, 1),
+};
+
+static struct snd_kcontrol_new snd_pmac_screamer_mixers_imac[] __initdata = {
+        AWACS_VOLUME("Play-through Playback Volume", 5, 6, 1),
         AWACS_SWITCH("CD Capture Switch", 0, SHIFT_MUX_CD, 0),
 };
 
@@ -627,6 +630,10 @@ static struct snd_kcontrol_new snd_pmac_awacs_mixers_pmac7500[] __initdata = {
         AWACS_SWITCH("Line Capture Switch", 0, SHIFT_MUX_MIC, 0),
 };
 
+static struct snd_kcontrol_new snd_pmac_awacs_mixers_pmac5500[] __initdata = {
+        AWACS_VOLUME("Headphone Playback Volume", 2, 6, 1),
+};
+
 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),
@@ -645,12 +652,19 @@ static struct snd_kcontrol_new snd_pmac_screamer_mixers2[] __initdata = {
         AWACS_SWITCH("Mic Capture Switch", 0, SHIFT_MUX_LINE, 0),
 };
 
+static struct snd_kcontrol_new snd_pmac_awacs_mixers2_pmac5500[] __initdata = {
+        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_master_sw_pmac5500 __initdata =
+AWACS_SWITCH("Headphone Playback Switch", 1, SHIFT_HDMUTE, 1);
+
 static struct snd_kcontrol_new snd_pmac_awacs_mic_boost[] __initdata = {
         AWACS_SWITCH("Mic Boost Capture Switch", 0, SHIFT_GAINLINE, 0),
 };
@@ -868,6 +882,8 @@ snd_pmac_awacs_init(struct snd_pmac *chip)
         int lombard = IS_LOMBARD;
         int imac;
         int err, vol;
+        struct snd_kcontrol *vmaster_sw, *vmaster_vol;
+        struct snd_kcontrol *master_vol, *speaker_vol;
 
         imac1 = IS_IMAC1;
         imac2 = IS_IMAC2;
@@ -968,19 +984,35 @@ snd_pmac_awacs_init(struct snd_pmac *chip)
                                    snd_pmac_awacs_mixers2);
         if (err < 0)
                 return err;
+        if (pm5500) {
+                err = build_mixers(chip,
+                                   ARRAY_SIZE(snd_pmac_awacs_mixers2_pmac5500),
+                                   snd_pmac_awacs_mixers2_pmac5500);
+                if (err < 0)
+                        return err;
+        }
         if (pm7500)
                 err = build_mixers(chip,
                                    ARRAY_SIZE(snd_pmac_awacs_mixers_pmac7500),
                                    snd_pmac_awacs_mixers_pmac7500);
+        else if (pm5500)
+                err = snd_ctl_add(chip->card,
+                    (master_vol = snd_ctl_new1(snd_pmac_awacs_mixers_pmac5500,
+                                                chip)));
         else if (beige)
                 err = build_mixers(chip,
                                    ARRAY_SIZE(snd_pmac_screamer_mixers_beige),
                                    snd_pmac_screamer_mixers_beige);
-        else if (imac || lombard)
+        else if (imac || lombard) {
+                err = snd_ctl_add(chip->card,
+                    (master_vol = snd_ctl_new1(snd_pmac_screamer_mixers_lo,
+                                                chip)));
+                if (err < 0)
+                        return err;
                 err = build_mixers(chip,
                                    ARRAY_SIZE(snd_pmac_screamer_mixers_imac),
                                    snd_pmac_screamer_mixers_imac);
-        else if (g4agp)
+        } else if (g4agp)
                 err = build_mixers(chip,
                                    ARRAY_SIZE(snd_pmac_screamer_mixers_g4agp),
                                    snd_pmac_screamer_mixers_g4agp);
@@ -992,6 +1024,8 @@ snd_pmac_awacs_init(struct snd_pmac *chip)
                 return err;
         chip->master_sw_ctl = snd_ctl_new1((pm7500 || imac || g4agp || lombard)
                         ? &snd_pmac_awacs_master_sw_imac
+                        : pm5500
+                        ? &snd_pmac_awacs_master_sw_pmac5500
                         : &snd_pmac_awacs_master_sw, chip);
         err = snd_ctl_add(chip->card, chip->master_sw_ctl);
         if (err < 0)
@@ -1023,8 +1057,9 @@ snd_pmac_awacs_init(struct snd_pmac *chip)
 #endif /* PMAC_AMP_AVAIL */
         {
                 /* route A = headphone, route C = speaker */
-                err = build_mixers(chip, ARRAY_SIZE(snd_pmac_awacs_speaker_vol),
-                                        snd_pmac_awacs_speaker_vol);
+                err = snd_ctl_add(chip->card,
+                    (speaker_vol = snd_ctl_new1(snd_pmac_awacs_speaker_vol,
+                                                chip)));
                 if (err < 0)
                         return err;
                 chip->speaker_sw_ctl = snd_ctl_new1(imac1
@@ -1037,6 +1072,33 @@ snd_pmac_awacs_init(struct snd_pmac *chip)
                         return err;
         }
 
+        if (pm5500 || imac || lombard) {
+                vmaster_sw = snd_ctl_make_virtual_master(
+                        "Master Playback Switch", (unsigned int *) NULL);
+                err = snd_ctl_add_slave_uncached(vmaster_sw,
+                                                 chip->master_sw_ctl);
+                if (err < 0)
+                        return err;
+                err = snd_ctl_add_slave_uncached(vmaster_sw,
+                                                  chip->speaker_sw_ctl);
+                if (err < 0)
+                        return err;
+                err = snd_ctl_add(chip->card, vmaster_sw);
+                if (err < 0)
+                        return err;
+                vmaster_vol = snd_ctl_make_virtual_master(
+                        "Master Playback Volume", (unsigned int *) NULL);
+                err = snd_ctl_add_slave(vmaster_vol, master_vol);
+                if (err < 0)
+                        return err;
+                err = snd_ctl_add_slave(vmaster_vol, speaker_vol);
+                if (err < 0)
+                        return err;
+                err = snd_ctl_add(chip->card, vmaster_vol);
+                if (err < 0)
+                        return err;
+        }
+
         if (beige || g4agp)
                 err = build_mixers(chip,
                                 ARRAY_SIZE(snd_pmac_screamer_mic_boost_beige),