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Commit 72f784f7 authored by Takashi Sakamoto's avatar Takashi Sakamoto Committed by Takashi Iwai
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ALSA: fireworks: Improve comments about Fireworks transaction 



It includes descriptions to cause misreading.

Signed-off-by: default avatarTakashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
parent cf44a136

sound/firewire/fireworks/fireworks_transaction.c

+8 −8
Original line number Diff line number Diff line
@@ -8,19 +8,19 @@ 


/*

 * Fireworks have its own transaction. The transaction can be delivered by AV/C

 * Vendor Specific command. But at least Windows driver and firmware version 5.5

 * or later don't use it.

 * Vendor Specific command frame or usual asynchronous transaction. At least,

 * Windows driver and firmware version 5.5 or later don't use AV/C command.

 *

 * Transaction substance:

 *  At first, 6 data exist. Following to the 6 data, parameters for each

 *  commands exists. All of parameters are 32 bit alighed to big endian.

 *  At first, 6 data exist. Following to the data, parameters for each command

 *  exist. All of the parameters are 32 bit alighed to big endian.

 *   data[0]:	Length of transaction substance

 *   data[1]:	Transaction version

 *   data[2]:	Sequence number. This is incremented by the device

 *   data[3]:	transaction category

 *   data[4]:	transaction command

 *   data[5]:	return value in response.

 *   data[6-]:	parameters

 *   data[3]:	Transaction category

 *   data[4]:	Transaction command

 *   data[5]:	Return value in response.

 *   data[6-]:	Parameters

 *

 * Transaction address:

 *  command:	0xecc000000000