From e84d15f619c13e83b33023c84527ee35ef01b6b4 Mon Sep 17 00:00:00 2001 From: Clemens Ladisch Date: Sun, 4 Sep 2011 22:12:48 +0200 Subject: ALSA: dice, firewire-lib: add blocking mode Allow AMDTP output streams to use blocking mode. Use it for DICE devices, because the old DICE-II chip will in some cases not be able to lock to non-blocking streams (erratum E7). Signed-off-by: Clemens Ladisch --- sound/firewire/amdtp.h | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) (limited to 'sound/firewire/amdtp.h') diff --git a/sound/firewire/amdtp.h b/sound/firewire/amdtp.h index f6103d68c4b1..fd4ce3030279 100644 --- a/sound/firewire/amdtp.h +++ b/sound/firewire/amdtp.h @@ -11,9 +11,13 @@ * sample_rate/8000 samples, with rounding up or down to adjust * for clock skew and left-over fractional samples. This should * be used if supported by the device. + * @CIP_BLOCKING: In blocking mode, each packet contains either zero or + * SYT_INTERVAL samples, with these two types alternating so that + * the overall sample rate comes out right. */ enum cip_out_flags { - CIP_NONBLOCKING = 0, + CIP_NONBLOCKING = 0x00, + CIP_BLOCKING = 0x01, }; /** @@ -51,6 +55,7 @@ struct amdtp_out_stream { __be32 *buffer, unsigned int frames); unsigned int syt_interval; + unsigned int transfer_delay; unsigned int source_node_id_field; struct iso_packets_buffer buffer; -- cgit v1.2.3