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| author | Takashi Sakamoto <o-takashi@sakamocchi.jp> | 2021-05-20 07:01:49 +0300 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2021-05-20 14:59:56 +0300 |
| commit | 233dbbc7af5d279a5b1cc92ab08f15f7c2d64ad7 (patch) | |
| tree | e2bc21dbccf95e09e09e70f14c3b3cbb06ce95fb /sound/firewire | |
| parent | c75f36789d3c668048ac757368c8b7b02e7cf953 (diff) | |
| download | linux-233dbbc7af5d279a5b1cc92ab08f15f7c2d64ad7.tar.xz | |
ALSA: firewire-lib: code refactoring for selection of IT context header length
This commit refactors regarding to the size of CIP header.
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Link: https://lore.kernel.org/r/20210520040154.80450-4-o-takashi@sakamocchi.jp
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/firewire')
| -rw-r--r-- | sound/firewire/amdtp-stream.c | 17 |
1 files changed, 11 insertions, 6 deletions
diff --git a/sound/firewire/amdtp-stream.c b/sound/firewire/amdtp-stream.c index 36135296c144..87644cb0d8ab 100644 --- a/sound/firewire/amdtp-stream.c +++ b/sound/firewire/amdtp-stream.c @@ -526,7 +526,7 @@ static void generate_cip_header(struct amdtp_stream *s, __be32 cip_header[2], } static void build_it_pkt_header(struct amdtp_stream *s, unsigned int cycle, - struct fw_iso_packet *params, + struct fw_iso_packet *params, unsigned int header_length, unsigned int data_blocks, unsigned int data_block_counter, unsigned int syt, unsigned int index) @@ -537,16 +537,15 @@ static void build_it_pkt_header(struct amdtp_stream *s, unsigned int cycle, payload_length = data_blocks * sizeof(__be32) * s->data_block_quadlets; params->payload_length = payload_length; - if (!(s->flags & CIP_NO_HEADER)) { + if (header_length > 0) { cip_header = (__be32 *)params->header; generate_cip_header(s, cip_header, data_block_counter, syt); - params->header_length = 2 * sizeof(__be32); - payload_length += params->header_length; + params->header_length = header_length; } else { cip_header = NULL; } - trace_amdtp_packet(s, cycle, cip_header, payload_length, data_blocks, + trace_amdtp_packet(s, cycle, cip_header, payload_length + header_length, data_blocks, data_block_counter, s->packet_index, index); } @@ -904,6 +903,7 @@ static void out_stream_callback(struct fw_iso_context *context, u32 tstamp, const __be32 *ctx_header = header; unsigned int events_per_period = d->events_per_period; unsigned int event_count = s->ctx_data.rx.event_count; + unsigned int pkt_header_length; unsigned int packets; int i; @@ -918,6 +918,11 @@ static void out_stream_callback(struct fw_iso_context *context, u32 tstamp, process_ctx_payloads(s, s->pkt_descs, packets); + if (!(s->flags & CIP_NO_HEADER)) + pkt_header_length = IT_PKT_HEADER_SIZE_CIP; + else + pkt_header_length = 0; + for (i = 0; i < packets; ++i) { const struct pkt_desc *desc = s->pkt_descs + i; unsigned int syt; @@ -932,7 +937,7 @@ static void out_stream_callback(struct fw_iso_context *context, u32 tstamp, else syt = s->ctx_data.rx.syt_override; - build_it_pkt_header(s, desc->cycle, &template.params, + build_it_pkt_header(s, desc->cycle, &template.params, pkt_header_length, desc->data_blocks, desc->data_block_counter, syt, i); |