ALSA: fireworks: Improve comments about Fireworks transaction
It includes descriptions to cause misreading. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
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@ -8,19 +8,19 @@
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/*
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* Fireworks have its own transaction. The transaction can be delivered by AV/C
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* Vendor Specific command. But at least Windows driver and firmware version 5.5
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* or later don't use it.
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* Vendor Specific command frame or usual asynchronous transaction. At least,
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* Windows driver and firmware version 5.5 or later don't use AV/C command.
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*
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* Transaction substance:
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* At first, 6 data exist. Following to the 6 data, parameters for each
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* commands exists. All of parameters are 32 bit alighed to big endian.
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* At first, 6 data exist. Following to the data, parameters for each command
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* exist. All of the parameters are 32 bit alighed to big endian.
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* data[0]: Length of transaction substance
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* data[1]: Transaction version
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* data[2]: Sequence number. This is incremented by the device
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* data[3]: transaction category
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* data[4]: transaction command
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* data[5]: return value in response.
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* data[6-]: parameters
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* data[3]: Transaction category
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* data[4]: Transaction command
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* data[5]: Return value in response.
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* data[6-]: Parameters
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*
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* Transaction address:
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* command: 0xecc000000000
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