From 33b2e1442aeaacabb4e29f8adb31469e87599b16 Mon Sep 17 00:00:00 2001 From: Takashi Sakamoto Date: Fri, 23 Nov 2018 13:13:03 +0900 Subject: ALSA: firewire-tascam: pick up data of state from tx isochronous pakcets Units of TASCAM FireWire series multiplex PCM frames and state of control surface into the same tx isochronous packets. One isochronous packet includes a part of the state in a quadlet data. An image of the state consists of 64 quadlet data. This commit demultiplexes the state from tx isochronous packets. Signed-off-by: Takashi Sakamoto Signed-off-by: Takashi Iwai --- sound/firewire/tascam/tascam.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'sound/firewire/tascam/tascam.h') diff --git a/sound/firewire/tascam/tascam.h b/sound/firewire/tascam/tascam.h index a5bd167eb5d9..c710496a99cf 100644 --- a/sound/firewire/tascam/tascam.h +++ b/sound/firewire/tascam/tascam.h @@ -89,6 +89,9 @@ struct snd_tscm { /* For MIDI message outgoing transactions. */ struct snd_fw_async_midi_port out_ports[TSCM_MIDI_OUT_PORT_MAX]; + + // A cache of status information in tx isoc packets. + __be32 state[SNDRV_FIREWIRE_TASCAM_STATE_COUNT]; }; #define TSCM_ADDR_BASE 0xffff00000000ull -- cgit v1.2.3