diff options
| author | Clemens Ladisch <clemens@ladisch.de> | 2012-02-13 21:55:13 +0100 |
|---|---|---|
| committer | Clemens Ladisch <clemens@ladisch.de> | 2013-10-20 22:07:57 +0200 |
| commit | a471fcde8c2c4b65f110bb4210af3513ee4deeb8 (patch) | |
| tree | fd68de6d1b36491413cbd89eabf47b77823a4041 /sound/firewire/dice.c | |
| parent | ed7e48264cfd3b000ab8dd100e6aa4c1447dd93a (diff) | |
| download | linux-a471fcde8c2c4b65f110bb4210af3513ee4deeb8.tar.bz2 | |
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/dice.c')
| -rw-r--r-- | sound/firewire/dice.c | 17 |
1 files changed, 12 insertions, 5 deletions
diff --git a/sound/firewire/dice.c b/sound/firewire/dice.c index 5f0f102cf5f9..49d630ba2d9f 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; |