[ALSA] ac97 - Add virtual master control to VT1616/VT1617A codec.

[linux-2.6-omap-h63xx.git] / sound / pci / ac97 / ac97_patch.c

diff --git a/sound/pci/ac97/ac97_patch.c b/sound/pci/ac97/ac97_patch.c
index 2da89810ca10fbab1e440aa4a0ae282e61799c42..92817f7d46d28c707e56b87899e3b4a73bf2ee92 100644 (file)
--- a/sound/pci/ac97/ac97_patch.c
+++ b/sound/pci/ac97/ac97_patch.c
@@ -1971,6 +1971,9 @@ static int snd_ac97_ad1888_lohpsel_get(struct snd_kcontrol *kcontrol, struct snd
 
        val = ac97->regs[AC97_AD_MISC];
        ucontrol->value.integer.value[0] = !(val & AC97_AD198X_LOSEL);
+       if (ac97->spec.ad18xx.lo_as_master)
+               ucontrol->value.integer.value[0] =
+                       !ucontrol->value.integer.value[0];
        return 0;
 }
 
@@ -1979,8 +1982,10 @@ static int snd_ac97_ad1888_lohpsel_put(struct snd_kcontrol *kcontrol, struct snd
        struct snd_ac97 *ac97 = snd_kcontrol_chip(kcontrol);
        unsigned short val;
 
-       val = !ucontrol->value.integer.value[0]
-               ? (AC97_AD198X_LOSEL | AC97_AD198X_HPSEL) : 0;
+       val = !ucontrol->value.integer.value[0];
+       if (ac97->spec.ad18xx.lo_as_master)
+               val = !val;
+       val = val ? (AC97_AD198X_LOSEL | AC97_AD198X_HPSEL) : 0;
        return snd_ac97_update_bits(ac97, AC97_AD_MISC,
                                    AC97_AD198X_LOSEL | AC97_AD198X_HPSEL, val);
 }
@@ -2031,7 +2036,7 @@ static void ad1888_update_jacks(struct snd_ac97 *ac97)
 {
        unsigned short val = 0;
        /* clear LODIS if shared jack is to be used for Surround out */
-       if (is_shared_linein(ac97))
+       if (!ac97->spec.ad18xx.lo_as_master && is_shared_linein(ac97))
                val |= (1 << 12);
        /* clear CLDIS if shared jack is to be used for C/LFE out */
        if (is_shared_micin(ac97))
@@ -2067,9 +2072,13 @@ static const struct snd_kcontrol_new snd_ac97_ad1888_controls[] = {
 
 static int patch_ad1888_specific(struct snd_ac97 *ac97)
 {
-       /* rename 0x04 as "Master" and 0x02 as "Master Surround" */
-       snd_ac97_rename_vol_ctl(ac97, "Master Playback", "Master Surround Playback");
-       snd_ac97_rename_vol_ctl(ac97, "Headphone Playback", "Master Playback");
+       if (!ac97->spec.ad18xx.lo_as_master) {
+               /* rename 0x04 as "Master" and 0x02 as "Master Surround" */
+               snd_ac97_rename_vol_ctl(ac97, "Master Playback",
+                                       "Master Surround Playback");
+               snd_ac97_rename_vol_ctl(ac97, "Headphone Playback",
+                                       "Master Playback");
+       }
        return patch_build_controls(ac97, snd_ac97_ad1888_controls, ARRAY_SIZE(snd_ac97_ad1888_controls));
 }
 
@@ -2088,16 +2097,27 @@ static int patch_ad1888(struct snd_ac97 * ac97)
        
        patch_ad1881(ac97);
        ac97->build_ops = &patch_ad1888_build_ops;
-       /* Switch FRONT/SURROUND LINE-OUT/HP-OUT default connection */
-       /* it seems that most vendors connect line-out connector to headphone out of AC'97 */
+
+       /*
+        * LO can be used as a real line-out on some devices,
+        * and we need to revert the front/surround mixer switches
+        */
+       if (ac97->subsystem_vendor == 0x1043 &&
+           ac97->subsystem_device == 0x1193) /* ASUS A9T laptop */
+               ac97->spec.ad18xx.lo_as_master = 1;
+
+       misc = snd_ac97_read(ac97, AC97_AD_MISC);
        /* AD-compatible mode */
        /* Stereo mutes enabled */
-       misc = snd_ac97_read(ac97, AC97_AD_MISC);
-       snd_ac97_write_cache(ac97, AC97_AD_MISC, misc |
-                            AC97_AD198X_LOSEL |
-                            AC97_AD198X_HPSEL |
-                            AC97_AD198X_MSPLT |
-                            AC97_AD198X_AC97NC);
+       misc |= AC97_AD198X_MSPLT | AC97_AD198X_AC97NC;
+       if (!ac97->spec.ad18xx.lo_as_master)
+               /* Switch FRONT/SURROUND LINE-OUT/HP-OUT default connection */
+               /* it seems that most vendors connect line-out connector to
+                * headphone out of AC'97
+                */
+               misc |= AC97_AD198X_LOSEL | AC97_AD198X_HPSEL;
+
+       snd_ac97_write_cache(ac97, AC97_AD_MISC, misc);
        ac97->flags |= AC97_STEREO_MUTES;
        return 0;
 }
@@ -3332,8 +3352,66 @@ AC97_SINGLE("Downmix LFE and Center to Front", 0x5a, 12, 1, 0),
 AC97_SINGLE("Downmix Surround to Front", 0x5a, 11, 1, 0),
 };
 
+static const char *slave_vols_vt1616[] = {
+       "Front Playback Volume",
+       "Surround Playback Volume",
+       "Center Playback Volume",
+       "LFE Playback Volume",
+       NULL
+};
+
+static const char *slave_sws_vt1616[] = {
+       "Front Playback Switch",
+       "Surround Playback Switch",
+       "Center Playback Switch",
+       "LFE Playback Switch",
+       NULL
+};
+
+/* find a mixer control element with the given name */
+static struct snd_kcontrol *snd_ac97_find_mixer_ctl(struct snd_ac97 *ac97,
+                                                   const char *name)
+{
+       struct snd_ctl_elem_id id;
+       memset(&id, 0, sizeof(id));
+       id.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
+       strcpy(id.name, name);
+       return snd_ctl_find_id(ac97->bus->card, &id);
+}
+
+/* create a virtual master control and add slaves */
+int snd_ac97_add_vmaster(struct snd_ac97 *ac97, char *name,
+                        const unsigned int *tlv, const char **slaves)
+{
+       struct snd_kcontrol *kctl;
+       const char **s;
+       int err;
+
+       kctl = snd_ctl_make_virtual_master(name, tlv);
+       if (!kctl)
+               return -ENOMEM;
+       err = snd_ctl_add(ac97->bus->card, kctl);
+       if (err < 0)
+               return err;
+
+       for (s = slaves; *s; s++) {
+               struct snd_kcontrol *sctl;
+
+               sctl = snd_ac97_find_mixer_ctl(ac97, *s);
+               if (!sctl) {
+                       snd_printdd("Cannot find slave %s, skipped\n", *s);
+                       continue;
+               }
+               err = snd_ctl_add_slave(kctl, sctl);
+               if (err < 0)
+                       return err;
+       }
+       return 0;
+}
+
 static int patch_vt1616_specific(struct snd_ac97 * ac97)
 {
+       struct snd_kcontrol *kctl;
        int err;
 
        if (snd_ac97_try_bit(ac97, 0x5a, 9))
@@ -3341,6 +3419,24 @@ static int patch_vt1616_specific(struct snd_ac97 * ac97)
                        return err;
        if ((err = patch_build_controls(ac97, &snd_ac97_controls_vt1616[1], ARRAY_SIZE(snd_ac97_controls_vt1616) - 1)) < 0)
                return err;
+
+       /* There is already a misnamed master switch.  Rename it.  */
+       kctl = snd_ac97_find_mixer_ctl(ac97, "Master Playback Volume");
+       if (!kctl)
+               return -EINVAL;
+
+       snd_ac97_rename_vol_ctl(ac97, "Master Playback", "Front Playback");
+
+       err = snd_ac97_add_vmaster(ac97, "Master Playback Volume",
+                                  kctl->tlv.p, slave_vols_vt1616);
+       if (err < 0)
+               return err;
+
+       err = snd_ac97_add_vmaster(ac97, "Master Playback Switch",
+                                  NULL, slave_sws_vt1616);
+       if (err < 0)
+               return err;
+
        return 0;
 }