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authorClemens Ladisch <clemens@ladisch.de>2012-02-13 21:55:13 +0100
committerClemens Ladisch <clemens@ladisch.de>2013-10-20 22:07:57 +0200
commita471fcde8c2c4b65f110bb4210af3513ee4deeb8 (patch)
treefd68de6d1b36491413cbd89eabf47b77823a4041 /sound/firewire
parented7e48264cfd3b000ab8dd100e6aa4c1447dd93a (diff)
ALSA: dice: fix detection of Weiss devices
While most DICE devices keep TCAT's default category ID of 0x04, Weiss devices identify themselves with 0x00. Reported-by: Rolf Anderegg <rolf.anderegg@weiss.ch> Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Diffstat (limited to 'sound/firewire')
-rw-r--r--sound/firewire/dice.c17
1 files changed, 12 insertions, 5 deletions
diff --git a/sound/firewire/dice.c b/sound/firewire/dice.c
index 5f0f102cf5f..49d630ba2d9 100644
--- a/sound/firewire/dice.c
+++ b/sound/firewire/dice.c
@@ -1109,7 +1109,10 @@ static void dice_card_free(struct snd_card *card)
mutex_destroy(&dice->mutex);
}
-#define DICE_CATEGORY_ID 0x04
+#define OUI_WEISS 0x001c6a
+
+#define DICE_CATEGORY_ID 0x04
+#define WEISS_CATEGORY_ID 0x00
static int dice_interface_check(struct fw_unit *unit)
{
@@ -1123,15 +1126,15 @@ static int dice_interface_check(struct fw_unit *unit)
struct fw_device *device = fw_parent_device(unit);
struct fw_csr_iterator it;
int key, value, vendor = -1, model = -1, err;
- unsigned int i;
+ unsigned int category, i;
__be32 pointers[ARRAY_SIZE(min_values)];
__be32 version;
/*
* Check that GUID and unit directory are constructed according to DICE
* rules, i.e., that the specifier ID is the GUID's OUI, and that the
- * GUID chip ID consists of the 8-bit DICE category ID, the 10-bit
- * product ID, and a 22-bit serial number.
+ * GUID chip ID consists of the 8-bit category ID, the 10-bit product
+ * ID, and a 22-bit serial number.
*/
fw_csr_iterator_init(&it, unit->directory);
while (fw_csr_iterator_next(&it, &key, &value)) {
@@ -1144,7 +1147,11 @@ static int dice_interface_check(struct fw_unit *unit)
break;
}
}
- if (device->config_rom[3] != ((vendor << 8) | DICE_CATEGORY_ID) ||
+ if (vendor == OUI_WEISS)
+ category = WEISS_CATEGORY_ID;
+ else
+ category = DICE_CATEGORY_ID;
+ if (device->config_rom[3] != ((vendor << 8) | category) ||
device->config_rom[4] >> 22 != model)
return -ENODEV;