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| author |   Takashi Sakamoto <o-takashi@sakamocchi.jp> | 2015-09-30 09:39:18 +0900 |
|---|---|---|
| committer |   Takashi Iwai <tiwai@suse.de> | 2015-09-30 15:34:55 +0200 |
| commit | 3a2a17974eef10766ffbd7d3e9f5191fbb3c9f33 (patch) | |
| tree | d1e56b7af5ee295e68b9ff89b99b9491df4bc20f /sound/firewire/digi00x/digi00x.h | |
| parent | ALSA: firewire-digi00x: add data block processing layer (diff) | |
| download | wireguard-linux-3a2a17974eef10766ffbd7d3e9f5191fbb3c9f33.tar.xz wireguard-linux-3a2a17974eef10766ffbd7d3e9f5191fbb3c9f33.zip | |
ALSA: firewire-digi00x: add stream functionality
This commit adds a functionality to manage streaming.
The streaming is not controlled by CMP in IEC 61883-6. It's controlled by
IEEE 1394 write transaction to certain addresses.
Several clock sources are available, while there're no differences about
packet transmission. The value of SYT field in transmitted packets is
always zero. Thus, streams in both direction don't build synchronization.
And the device always requires received packets to transmit packets. This
driver keeps to transfer outgoing stream even if they're not required.
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/firewire/digi00x/digi00x.h')
| -rw-r--r-- | sound/firewire/digi00x/digi00x.h | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/sound/firewire/digi00x/digi00x.h b/sound/firewire/digi00x/digi00x.h index fe21d7778004..685d5f01ee0d 100644 --- a/sound/firewire/digi00x/digi00x.h +++ b/sound/firewire/digi00x/digi00x.h @@ -31,6 +31,57 @@ struct snd_dg00x { struct fw_unit *unit; struct mutex mutex; + + struct amdtp_stream tx_stream; + struct fw_iso_resources tx_resources; + + struct amdtp_stream rx_stream; + struct fw_iso_resources rx_resources; + + unsigned int substreams_counter; +}; + +#define DG00X_ADDR_BASE 0xffffe0000000ull + +#define DG00X_OFFSET_STREAMING_STATE 0x0000 +#define DG00X_OFFSET_STREAMING_SET 0x0004 +#define DG00X_OFFSET_MIDI_CTL_ADDR 0x0008 +/* For LSB of the address 0x000c */ +/* unknown 0x0010 */ +#define DG00X_OFFSET_MESSAGE_ADDR 0x0014 +/* For LSB of the address 0x0018 */ +/* unknown 0x001c */ +/* unknown 0x0020 */ +/* not used 0x0024--0x00ff */ +#define DG00X_OFFSET_ISOC_CHANNELS 0x0100 +/* unknown 0x0104 */ +/* unknown 0x0108 */ +/* unknown 0x010c */ +#define DG00X_OFFSET_LOCAL_RATE 0x0110 +#define DG00X_OFFSET_EXTERNAL_RATE 0x0114 +#define DG00X_OFFSET_CLOCK_SOURCE 0x0118 +#define DG00X_OFFSET_OPT_IFACE_MODE 0x011c +/* unknown 0x0120 */ +/* Mixer control on/off 0x0124 */ +/* unknown 0x0128 */ +#define DG00X_OFFSET_DETECT_EXTERNAL 0x012c +/* unknown 0x0138 */ +#define DG00X_OFFSET_MMC 0x0400 + +enum snd_dg00x_rate { + SND_DG00X_RATE_44100 = 0, + SND_DG00X_RATE_48000, + SND_DG00X_RATE_88200, + SND_DG00X_RATE_96000, + SND_DG00X_RATE_COUNT, +}; + +enum snd_dg00x_clock { + SND_DG00X_CLOCK_INTERNAL = 0, + SND_DG00X_CLOCK_SPDIF, + SND_DG00X_CLOCK_ADAT, + SND_DG00X_CLOCK_WORD, + SND_DG00X_CLOCK_COUNT, }; int amdtp_dot_init(struct amdtp_stream *s, struct fw_unit *unit, @@ -43,4 +94,21 @@ int amdtp_dot_add_pcm_hw_constraints(struct amdtp_stream *s, struct snd_pcm_runtime *runtime); void amdtp_dot_set_pcm_format(struct amdtp_stream *s, snd_pcm_format_t format); +extern const unsigned int snd_dg00x_stream_rates[SND_DG00X_RATE_COUNT]; +extern const unsigned int snd_dg00x_stream_pcm_channels[SND_DG00X_RATE_COUNT]; +int snd_dg00x_stream_get_external_rate(struct snd_dg00x *dg00x, + unsigned int *rate); +int snd_dg00x_stream_get_local_rate(struct snd_dg00x *dg00x, + unsigned int *rate); +int snd_dg00x_stream_set_local_rate(struct snd_dg00x *dg00x, unsigned int rate); +int snd_dg00x_stream_get_clock(struct snd_dg00x *dg00x, + enum snd_dg00x_clock *clock); +int snd_dg00x_stream_check_external_clock(struct snd_dg00x *dg00x, + bool *detect); +int snd_dg00x_stream_init_duplex(struct snd_dg00x *dg00x); +int snd_dg00x_stream_start_duplex(struct snd_dg00x *dg00x, unsigned int rate); +void snd_dg00x_stream_stop_duplex(struct snd_dg00x *dg00x); +void snd_dg00x_stream_update_duplex(struct snd_dg00x *dg00x); +void snd_dg00x_stream_destroy_duplex(struct snd_dg00x *dg00x); + #endif |