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| author |   Takashi Sakamoto <o-takashi@sakamocchi.jp> | 2019-05-24 00:14:37 +0900 |
|---|---|---|
| committer |   Takashi Iwai <tiwai@suse.de> | 2019-05-24 09:05:15 +0200 |
| commit | 252219c7b38c76b0da374d5197cc825772fd487d (patch) | |
| tree | 687d3a67277a2b1491857c2a075cc2b41ddfb6ff /sound/firewire/amdtp-stream.c | |
| parent | ALSA: hdspm: Fix single speed ADAT capture and playback with RME HDSPe AIO (diff) | |
| download | linux-dev-252219c7b38c76b0da374d5197cc825772fd487d.tar.xz linux-dev-252219c7b38c76b0da374d5197cc825772fd487d.zip | |
ALSA: firewire-lib: split helper function to generate CIP header
This is minor code refactoring to split a function to generate CIP
header.
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/firewire/amdtp-stream.c')
| -rw-r--r-- | sound/firewire/amdtp-stream.c | 22 |
1 files changed, 14 insertions, 8 deletions
diff --git a/sound/firewire/amdtp-stream.c b/sound/firewire/amdtp-stream.c index 2d9c764061d1..25985663bb2b 100644 --- a/sound/firewire/amdtp-stream.c +++ b/sound/firewire/amdtp-stream.c @@ -477,6 +477,19 @@ static inline int queue_in_packet(struct amdtp_stream *s) return queue_packet(s, s->ctx_data.tx.max_ctx_payload_length); } +static void generate_cip_header(struct amdtp_stream *s, __be32 cip_header[2], + unsigned int syt) +{ + cip_header[0] = cpu_to_be32(READ_ONCE(s->source_node_id_field) | + (s->data_block_quadlets << CIP_DBS_SHIFT) | + ((s->sph << CIP_SPH_SHIFT) & CIP_SPH_MASK) | + s->data_block_counter); + cip_header[1] = cpu_to_be32(CIP_EOH | + ((s->fmt << CIP_FMT_SHIFT) & CIP_FMT_MASK) | + ((s->ctx_data.rx.fdf << CIP_FDF_SHIFT) & CIP_FDF_MASK) | + (syt & CIP_SYT_MASK)); +} + static int handle_out_packet(struct amdtp_stream *s, unsigned int cycle, const __be32 *ctx_header, __be32 *buffer, unsigned int index) @@ -495,14 +508,7 @@ static int handle_out_packet(struct amdtp_stream *s, unsigned int cycle, s->data_block_counter = (s->data_block_counter + data_blocks) & 0xff; - buffer[0] = cpu_to_be32(READ_ONCE(s->source_node_id_field) | - (s->data_block_quadlets << CIP_DBS_SHIFT) | - ((s->sph << CIP_SPH_SHIFT) & CIP_SPH_MASK) | - s->data_block_counter); - buffer[1] = cpu_to_be32(CIP_EOH | - ((s->fmt << CIP_FMT_SHIFT) & CIP_FMT_MASK) | - ((s->ctx_data.rx.fdf << CIP_FDF_SHIFT) & CIP_FDF_MASK) | - (syt & CIP_SYT_MASK)); + generate_cip_header(s, buffer, syt); if (!(s->flags & CIP_DBC_IS_END_EVENT)) s->data_block_counter = |