2 files changed, 3 insertions, 2 deletions

diff --git a/sound/ppc/pmac.c b/sound/ppc/pmac.c
index a38c0c790d2b..af76ee862d27 100644
--- a/sound/ppc/pmac.c
+++ b/sound/ppc/pmac.c
@@ -1033,7 +1033,7 @@ static int __init snd_pmac_detect(struct snd_pmac *chip)
         }
         if (of_device_is_compatible(sound, "tumbler")) {
                 chip->model = PMAC_TUMBLER;
-                chip->can_capture = 0;  /* no capture */
+                chip->can_capture = machine_is_compatible("PowerMac4,2");
                 chip->can_duplex = 0;
                 // chip->can_byte_swap = 0; /* FIXME: check this */
                 chip->num_freqs = ARRAY_SIZE(tumbler_freqs);
diff --git a/sound/ppc/tumbler.c b/sound/ppc/tumbler.c
index f746e15b8481..3eb223385416 100644
--- a/sound/ppc/tumbler.c
+++ b/sound/ppc/tumbler.c
@@ -875,7 +875,8 @@ static struct snd_kcontrol_new snapper_mixers[] __initdata = {
           .put = tumbler_put_master_switch
         },
         DEFINE_SNAPPER_MIX("PCM Playback Volume", 0, VOL_IDX_PCM),
-        DEFINE_SNAPPER_MIX("PCM Playback Volume", 1, VOL_IDX_PCM2),
+        /* Alternative PCM is assigned to Mic analog loopback on iBook G4 */
+        DEFINE_SNAPPER_MIX("Mic Playback Volume", 0, VOL_IDX_PCM2),
         DEFINE_SNAPPER_MIX("Monitor Mix Volume", 0, VOL_IDX_ADC),
         DEFINE_SNAPPER_MONO("Tone Control - Bass", bass),
         DEFINE_SNAPPER_MONO("Tone Control - Treble", treble),