[PATCH] pmac: sound support for latest laptops

This patch hacks the current Alsa snd-powermac driver to add support for
recent machine models with the tas3004 chip, that is basically new laptop
models.  The Mac Mini is _NOT_ yet supported by this patch (soon soon ...).
 The G5s (iMac or Desktop) will need the rewritten sound driver on which
I'm working on (I _might_ get a hack for analog only on some G5s on the
current driver, but no promise).

Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 20 insertions, 6 deletions

diff --git a/sound/ppc/pmac.c b/sound/ppc/pmac.c
index 6c4ed90f490e..f9a9601769aa 100644
--- a/sound/ppc/pmac.c
+++ b/sound/ppc/pmac.c
@@ -881,6 +881,7 @@ static int __init snd_pmac_detect(pmac_t *chip)
 {
         struct device_node *sound;
         unsigned int *prop, l;
+        u32 layout_id = 0;
 
         if (_machine != _MACH_Pmac)
                 return -ENODEV;
@@ -929,6 +930,9 @@ static int __init snd_pmac_detect(pmac_t *chip)
         prop = (unsigned int *) get_property(sound, "sub-frame", NULL);
         if (prop && *prop < 16)
                 chip->subframe = *prop;
+        prop = (unsigned int *) get_property(sound, "layout-id", NULL);
+        if (prop)
+                layout_id = *prop;
         /* This should be verified on older screamers */
         if (device_is_compatible(sound, "screamer")) {
                 chip->model = PMAC_SCREAMER;
@@ -961,12 +965,22 @@ static int __init snd_pmac_detect(pmac_t *chip)
                 chip->freq_table = tumbler_freqs;
                 chip->control_mask = MASK_IEPC | 0x11; /* disable IEE */
         }
-        if (device_is_compatible(sound, "AOAKeylargo")) {
-                /* Seems to support the stock AWACS frequencies, but has
-                   a snapper mixer */
-                chip->model = PMAC_SNAPPER;
-                // chip->can_byte_swap = 0; /* FIXME: check this */
-                chip->control_mask = MASK_IEPC | 0x11; /* disable IEE */
+        if (device_is_compatible(sound, "AOAKeylargo") ||
+            device_is_compatible(sound, "AOAbase")) {
+                /* For now, only support very basic TAS3004 based machines with
+                 * single frequency until proper i2s control is implemented
+                 */
+                switch(layout_id) {
+                case 0x48:
+                case 0x46:
+                case 0x33:
+                case 0x29:
+                        chip->num_freqs = ARRAY_SIZE(tumbler_freqs);
+                        chip->model = PMAC_SNAPPER;
+                        chip->can_byte_swap = 0; /* FIXME: check this */
+                        chip->control_mask = MASK_IEPC | 0x11; /* disable IEE */
+                        break;
+                }
         }
         prop = (unsigned int *)get_property(sound, "device-id", NULL);
         if (prop)