From 531f471834227d0321110c071ea352bb14aca36d Mon Sep 17 00:00:00 2001 From: Takashi Sakamoto Date: Fri, 14 Apr 2017 16:46:25 +0900 Subject: ALSA: firewire-lib/firewire-tascam: localize async midi port In Linux kernel 4.4, firewire-lib got a feature called as 'async midi port' for transmission of MIDI message via IEEE 1394 asynchronous communication, however actual consumer of this feature is ALSA driver for TASCAM FireWire series only. When adding this feature, I assumed that ALSA driver for Digi00x might also be a consumer, actually it's not. This commit moves the feature from firewire-lib to firewire-tascam module. Two minor kernel APIs are removed. Signed-off-by: Takashi Sakamoto Signed-off-by: Takashi Iwai --- sound/firewire/tascam/tascam.h | 45 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 45 insertions(+) (limited to 'sound/firewire/tascam/tascam.h') diff --git a/sound/firewire/tascam/tascam.h b/sound/firewire/tascam/tascam.h index d3cd4065722b..de76313e5d50 100644 --- a/sound/firewire/tascam/tascam.h +++ b/sound/firewire/tascam/tascam.h @@ -45,6 +45,29 @@ struct snd_tscm_spec { #define TSCM_MIDI_IN_PORT_MAX 4 #define TSCM_MIDI_OUT_PORT_MAX 4 +struct snd_fw_async_midi_port; +typedef int (*snd_fw_async_midi_port_fill)( + struct snd_rawmidi_substream *substream, + u8 *buf); + +struct snd_fw_async_midi_port { + struct fw_device *parent; + struct work_struct work; + bool idling; + ktime_t next_ktime; + bool error; + + u64 addr; + struct fw_transaction transaction; + + u8 *buf; + unsigned int len; + + struct snd_rawmidi_substream *substream; + snd_fw_async_midi_port_fill fill; + int consume_bytes; +}; + struct snd_tscm { struct snd_card *card; struct fw_unit *unit; @@ -131,6 +154,28 @@ void snd_tscm_stream_lock_changed(struct snd_tscm *tscm); int snd_tscm_stream_lock_try(struct snd_tscm *tscm); void snd_tscm_stream_lock_release(struct snd_tscm *tscm); +int snd_fw_async_midi_port_init(struct snd_fw_async_midi_port *port, + struct fw_unit *unit, u64 addr, unsigned int len, + snd_fw_async_midi_port_fill fill); +void snd_fw_async_midi_port_destroy(struct snd_fw_async_midi_port *port); + +static inline void +snd_fw_async_midi_port_run(struct snd_fw_async_midi_port *port, + struct snd_rawmidi_substream *substream) +{ + if (!port->error) { + port->substream = substream; + schedule_work(&port->work); + } +} + +static inline void +snd_fw_async_midi_port_finish(struct snd_fw_async_midi_port *port) +{ + port->substream = NULL; + port->error = false; +} + int snd_tscm_transaction_register(struct snd_tscm *tscm); int snd_tscm_transaction_reregister(struct snd_tscm *tscm); void snd_tscm_transaction_unregister(struct snd_tscm *tscm); -- cgit v1.2.3