ALSA: fireface: add support for Fireface 400

Fireface 400 is a second model of RME Fireface series, released in 2006.
This commit adds support for this model.

This model supports 8 analog channels, 2 S/PDIF channels and 8 ADAT
channels in both of tx/rx packet. The number of ADAT channels differs
depending on each mode of sampling transmission frequency.

$ python2 linux-firewire-utils/src/crpp < /sys/bus/firewire/devices/fw1/config_rom
               ROM header and bus information block
               -----------------------------------------------------------------
400  04107768  bus_info_length 4, crc_length 16, crc 30568 (should be 61311)
404  31333934  bus_name "1394"
408  20009002  irmc 0, cmc 0, isc 1, bmc 0, cyc_clk_acc 0, max_rec 9 (1024)
40c  000a3501  company_id 000a35     |
410  1bd0862a  device_id 011bd0862a  | EUI-64 000a35011bd0862a

               root directory
               -----------------------------------------------------------------
414  000485ec  directory_length 4, crc 34284
418  03000a35  vendor
41c  0c0083c0  node capabilities per IEEE 1394
420  8d000006  --> eui-64 leaf at 438
424  d1000001  --> unit directory at 428

               unit directory at 428
               -----------------------------------------------------------------
428  000314c4  directory_length 3, crc 5316
42c  12000a35  specifier id
430  13000002  version
434  17101800  model

               eui-64 leaf at 438
               -----------------------------------------------------------------
438  000261a8  leaf_length 2, crc 25000
43c  000a3501  company_id 000a35     |
440  1bd0862a  device_id 011bd0862a  | EUI-64 000a35011bd0862a

Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/firewire/fireface/ff.c

@@ -157,7 +157,28 @@ static void snd_ff_remove(struct fw_unit *unit)
 	}
 }
 
+static struct snd_ff_spec spec_ff400 = {
+	.name = "Fireface400",
+	.pcm_capture_channels = {18, 14, 10},
+	.pcm_playback_channels = {18, 14, 10},
+	.midi_in_ports = 2,
+	.midi_out_ports = 2,
+	.protocol = &snd_ff_protocol_ff400,
+};
+
 static const struct ieee1394_device_id snd_ff_id_table[] = {
+	/* Fireface 400 */
+	{
+		.match_flags	= IEEE1394_MATCH_VENDOR_ID |
+				  IEEE1394_MATCH_SPECIFIER_ID |
+				  IEEE1394_MATCH_VERSION |
+				  IEEE1394_MATCH_MODEL_ID,
+		.vendor_id	= OUI_RME,
+		.specifier_id	= 0x000a35,
+		.version	= 0x000002,
+		.model_id	= 0x101800,
+		.driver_data	= (kernel_ulong_t)&spec_ff400,
+	},
 	{}
 };
 MODULE_DEVICE_TABLE(ieee1394, snd_ff_id_table);