linux-arm.git - Russell King's ARM Linux kernel tree

Age	Commit message (Collapse)	Author
2017-03-28	ALSA: firewire-motu: enable to read transaction cache via hwdep interface	Takashi Sakamoto
	MOTU FireWire series can transfer messages to registered address. These messages are transferred for the status of internal clock synchronization just after starting streams. When the synchronization is stable, it's 0x01ffffff. Else, it's 0x05ffffff. This commit adds a functionality for user space applications to receive content of the message. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2017-03-28	ALSA: firewire-motu: handle transactions specific for MOTU FireWire models	Takashi Sakamoto
	All models of MOTU FireWire series can be controlled by write transaction to addresses in a range from 0x'ffff'f0000'0b00 to 0x'ffff'f000'0cff. The models support asynchronous notification. This notification has 32 bit field data, and is transferred when status of clock changes. Meaning of the value is not enough clear yet. Drivers can register its address to receive the notification. Write transaction to 0x'ffff'f000'0b04 registers higher 16 bits of the address. Write transaction to 0x'ffff'f0000'0b08 registers the rest of bits. The address includes node ID, thus it should be registered every time of bus reset. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>