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path: root/sound/firewire/amdtp-stream.c
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2021-05-18ALSA: firewire-lib: code refactoring for jumbo payload quirkTakashi Sakamoto
A new macro is added to describe the maximum number of cycles to accept cycle skip by jumbo payload quirk. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Link: https://lore.kernel.org/r/20210518084557.102681-10-o-takashi@sakamocchi.jp Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-05-18ALSA: firewire-lib/motu: use int type for the value of bitwise OR with ↵Takashi Sakamoto
enumerator-constant It brings some inconvenience in practice to use enumerated type for variable to which bitwise OR with enumerator constant is assigned. This commit replaces declarations of enumerated type with int type. Suggested-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Link: https://lore.kernel.org/r/20210518084557.102681-3-o-takashi@sakamocchi.jp Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-05-14ALSA: firewire-lib: fix amdtp_packet tracepoints event for packet_index fieldTakashi Sakamoto
The snd_firewire_lib:amdtp_packet tracepoints event includes index of packet processed in a context handling. However in IR context, it is not calculated as expected. Cc: <stable@vger.kernel.org> Fixes: 753e717986c2 ("ALSA: firewire-lib: use packet descriptor for IR context") Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Link: https://lore.kernel.org/r/20210513125652.110249-6-o-takashi@sakamocchi.jp Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-05-14ALSA: firewire-lib: fix calculation for size of IR context payloadTakashi Sakamoto
The quadlets for CIP header is handled as a part of IR context header, thus it doesn't join in IR context payload. However current calculation includes the quadlets in IR context payload. Cc: <stable@vger.kernel.org> Fixes: f11453c7cc01 ("ALSA: firewire-lib: use 16 bytes IR context header to separate CIP header") Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Link: https://lore.kernel.org/r/20210513125652.110249-5-o-takashi@sakamocchi.jp Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-05-14ALSA: firewire-lib: fix check for the size of isochronous packet payloadTakashi Sakamoto
The check for size of isochronous packet payload just cares of the size of IR context payload without the size of CIP header. Cc: <stable@vger.kernel.org> Fixes: f11453c7cc01 ("ALSA: firewire-lib: use 16 bytes IR context header to separate CIP header") Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Link: https://lore.kernel.org/r/20210513125652.110249-4-o-takashi@sakamocchi.jp Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-09-11ALSA: firewire: Replace tasklet with workTakashi Iwai
The tasklet is an old API that should be deprecated, usually can be converted to another decent API. In FireWire driver, a tasklet is still used for offloading the AMDTP PCM stream handling. It can be achieved gracefully with a work queued, too. This patch replaces the tasklet usage in firewire-lib driver with a simple work. The conversion is fairly straightforward but for the in_interrupt() checks that are replaced with the check using the current_work(). Note that in_interrupt() in amdtp_packet tracepoint is still kept as is. This is the place that is probed by both softirq of 1394 OHCI and a user task of a PCM application, and the work handling is already filtered in amdtp_domain_stream_pcm_pointer(). Tested-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Acked-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Link: https://lore.kernel.org/r/20200909163659.21708-1-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-09-02ALSA: firewire: convert tasklets to use new tasklet_setup() APIAllen Pais
In preparation for unconditionally passing the struct tasklet_struct pointer to all tasklet callbacks, switch to using the new tasklet_setup() and from_tasklet() to pass the tasklet pointer explicitly. Signed-off-by: Romain Perier <romain.perier@gmail.com> Signed-off-by: Allen Pais <allen.lkml@gmail.com> Acked-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Link: https://lore.kernel.org/r/20200902040221.354941-3-allen.lkml@gmail.com Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-05-08ALSA: firewire-lib: use sequence of syt offset and data block on pool in ↵Takashi Sakamoto
AMDTP domain In previous commit, the sequence of syt offset and the number of data blocks per packet is calculated for pool in AMDTP domain structure in advance of processing outgoing packets. This commit uses the sequence for outgoing packet processing to obsolete per-stream processing of the sequence. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Link: https://lore.kernel.org/r/20200508043635.349339-11-o-takashi@sakamocchi.jp Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-05-08ALSA: firewire-lib: pool ideal sequence of syt offset and data blockTakashi Sakamoto
In current implementation, sequence of syt offset and the number of data blocks is generated when packets for outgoing stream are going to be queued. This commit generates and pools the sequence independently of the processing of outgoing packets for future extension. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Link: https://lore.kernel.org/r/20200508043635.349339-10-o-takashi@sakamocchi.jp Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-05-08ALSA: firewire-lib: add cache for packet sequence to AMDTP domain structureTakashi Sakamoto
For future extension, storage is required to store packet sequence in incoming AMDTP stream to recover media clock for outgoing AMDTP stream. This commit adds the storage to AMDTP domain for this purpose. The packet sequence is represented by 'struct seq_desc' which has two members; syt_offset and the number of data blocks. The size of storage is decided according to the size of packet queue. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Link: https://lore.kernel.org/r/20200508043635.349339-9-o-takashi@sakamocchi.jp Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-05-08ALSA: firewire-lib: code refactoring for data block calculationTakashi Sakamoto
When calculating the number of data blocks per packet, some states are stored in AMDTP stream structure. This is inconvenient when reuse the calculation from non-stream structure. This commit applies refactoring to helper function for the calculation so that the function doesn't touch AMDTP stream structure. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Link: https://lore.kernel.org/r/20200508043635.349339-8-o-takashi@sakamocchi.jp Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-05-08ALSA: firewire-lib: code refactoring for syt offset calculationTakashi Sakamoto
When calculating syt offset, some states are stored in AMDTP stream structure. This is inconvenient when reuse the calculation from non-stream structure. This commit applies refactoring to helper function for the calculation so that the function doesn't touch AMDTP stream structure. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Link: https://lore.kernel.org/r/20200508043635.349339-7-o-takashi@sakamocchi.jp Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-05-08ALSA: firewire-lib: code refactoring for syt computationTakashi Sakamoto
In current implementation for outgoing AMDTP packet, the value of syt field in CIP header is computed when calculating syt offset. For future extension, it's convenient to split the computation and calculation. This commit splits them. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Link: https://lore.kernel.org/r/20200508043635.349339-6-o-takashi@sakamocchi.jp Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-05-08ALSA: firewire-lib: code refactoring for parameters of packet queue and IRQ ↵Takashi Sakamoto
timing Although the parameter for packet queue and IRQ timing is calculated when AMDTP stream starts, the calculated parameters are the same between streams in AMDTP domain. This commit moves the calculation and decide the parameters when AMDTP domain starts. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Link: https://lore.kernel.org/r/20200508043635.349339-5-o-takashi@sakamocchi.jp Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-05-08ALSA: firewire-lib: add reference to domain structure from stream structureTakashi Sakamoto
In current implementation, AMDTP domain structure and AMDTP stream structure has one way of reference from the former to the latter. For future extension, bidirectional reference is needed. This commit adds a member into stream structure to refer to domain structure to which the stream belongs. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Link: https://lore.kernel.org/r/20200508043635.349339-4-o-takashi@sakamocchi.jp Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-05-08ALSA: firewire-lib: use macro for maximum value of second in 1394 OHCI isoc ↵Takashi Sakamoto
descriptor In descriptor of isochronous context in 1394 OHCI, the field of second has 3 bit, thus the maximum value is 8. The value is used for correct cycle calculation. This commit replaces hard-coded value with macro to obsolete magic number. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Link: https://lore.kernel.org/r/20200508043635.349339-3-o-takashi@sakamocchi.jp Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-10-19ALSA: firewire-lib: postpone to start IR contextTakashi Sakamoto
Some devices have a quirk to postpone transmission of isoc packet for several dozen or hundred isoc cycles since configured to transmit. Furthermore, some devices have a quirk to transmit isoc packet with discontinued data of its header. In 1394 OHCI specification, software allows to start isoc context with certain isoc cycle. Linux firewire subsystem has kernel API to use it as well. This commit uses the functionality of 1394 OHCI controller to handle the quirks. At present, this feature is convenient to ALSA bebob and fireface driver. As a result, some devices can be safely handled, as long as I know: - MAudio FireWire solo - MAudio ProFire Lightbridge - MAudio FireWire 410 - Roland FA-66 Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Link: https://lore.kernel.org/r/20191018061911.24909-7-o-takashi@sakamocchi.jp Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-10-19ALSA: firewire-lib: handle several AMDTP streams in callback handler of IRQ ↵Takashi Sakamoto
target This commit changes AMDTP domain to run on an IT context of 1394 OHCI as IRQ target. No hardware interrupt is scheduled for the other isoc contexts. All of the isoc context are processed in a callback for an isoc context of IRQ target. The IRQ target is automatically selected from a list of AMDTP streams, thus users of AMDTP domain should add an AMDTP stream for IT context at least. The reason to select IT context as IRQ target is that the IT context runs on local 1394 OHCI controller and it can be used as reliable, constant IRQ generator. On the other hand, IR context can include skip cycle according to isoc packet transferred by device. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Link: https://lore.kernel.org/r/20191018061911.24909-6-o-takashi@sakamocchi.jp Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-10-19ALSA: firewire-lib: cancel flushing isoc context in the laste step to ↵Takashi Sakamoto
process context callback The aim of AMDTP domain is to process several isoc context in the same time. However, current implementation is against this idea because it flushes each isoc context in the end of processing context callback. This commit cancels it. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Link: https://lore.kernel.org/r/20191018061911.24909-5-o-takashi@sakamocchi.jp Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-10-19ALSA: firewire-lib: replace ack callback to flush isoc contexts in AMDTP domainTakashi Sakamoto
An isoc context for AMDTP stream is flushed to queue packet by a call of pcm.ack. This commit extends this for AMDTP domain. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Link: https://lore.kernel.org/r/20191018061911.24909-4-o-takashi@sakamocchi.jp Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-10-19ALSA: firewire-lib: replace pointer callback to flush isoc contexts in AMDTP ↵Takashi Sakamoto
domain An isoc context for AMDTP stream is flushed to queue packet by a call of pcm.pointer. This commit extends this for AMDTP domain. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Link: https://lore.kernel.org/r/20191018061911.24909-3-o-takashi@sakamocchi.jp Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-10-18ALSA: firewire-lib: tune the minimum available size of PCM periodTakashi Sakamoto
In IEC 61883-1/6, one isoc packet can transfer events up to the value of syt interval. This comes from the interval of isoc cycle. As 1394 OHCI controller can generate hardware IRQ per isoc packet, the interval is calculated as 125 usec. In IEC 61883-1/6, two ways of transmission is described; blocking and non-blocking methods. In blocking method, the sequence of packet includes 'empty' or 'NODATA' packets which include no events. In non-blocking method, the number of events per packet is variable up to the syt interval. This commit uses double of the value of syt interval as minimum available size of PCM period due to the above protocol design. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Link: https://lore.kernel.org/r/20191017155424.885-13-o-takashi@sakamocchi.jp Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-10-18ALSA: firewire-lib: tune the maximum available size of PCM periodTakashi Sakamoto
Linux driver for 1394 OHCI controller voluntarily flushes isoc context when total size of accumulated context header reached PAGE_SIZE. This kicks tasklet for the isoc context. This is inconvenient to process runtime of PCM substream. This commit adds a restriction of the maximum size of PCM period to avoid this behaviour. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Link: https://lore.kernel.org/r/20191017155424.885-12-o-takashi@sakamocchi.jp Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-10-18ALSA: firewire-lib: schedule hardware IRQ according to the size of PCM periodTakashi Sakamoto
ALSA IEC 61883-1/6 packet streaming engine controls 1394 OHCI controller to generate hardware IRQ for fixed number of isochronous packets (=16) since its first commit. This commit allow the engine to generate it for variable period according to the number of event to handle. For outgoing stream, internal calculator is used to check the accumulated events. For incoming stream, the number of data block in the packet of stream is used to check the accumulated events. When it's unavailable, fixed number of packet roughly calculated in advance is used instead of event counting. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Link: https://lore.kernel.org/r/20191017155424.885-11-o-takashi@sakamocchi.jp Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-10-18ALSA: firewire-lib: use variable size of queue for isoc packets instead of ↵Takashi Sakamoto
fixed size The number of packets in packet buffer has been fixed number (=48) since first commit of ALSA IEC 61883-1/6 packet streaming engine. This commit allows the engine to use variable number of packets in the buffer. The size is calculated by a parameter in AMDTP domain structure surely to store the number of events in the packets of buffer. Although the value of parameter is expected to come from 'period size' parameter of PCM substream, at present 48 is still used. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Link: https://lore.kernel.org/r/20191017155424.885-2-o-takashi@sakamocchi.jp Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-10-17ALSA: firewire-lib: add a member into AMDTP domain for events per periodTakashi Sakamoto
In IEC 61883-6, it's called as 'event' what has presentation time represented by timestamp in CIP header. Although the ratio of the number of event against the number of data block is different depending on event data type represented by the specific field in CIP header, it's just one in the most cases supported by ALSA IEC 61883-1/6 engine. In 1394 OHCI specification, applications can schedule hardware IRQ by configuring descriptor with IRQ flag for packet against each isochronous cycle. For future commit, I use the hardware IRQ for isoc IT context to acknowledge the elapse of PCM period for both playback/capture directions on AMDTP streams in the same domain. This commit is a preparation for the above idea. This commit adds a member into AMDTP domain structure to record the number of PCM frames. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Link: https://lore.kernel.org/r/20191007110532.30270-2-o-takashi@sakamocchi.jp Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-09-07ALSA: firewire-lib: remove WARN_ON() at destruction of AMDTP domainTakashi Sakamoto
The destructor of AMDTP domain has WARN_ON() for the list of associated AMDTP stream. Although this reminds a case that developers forget to program consumer drivers to stop AMDTP domain, it hits when AMDTP domain is not initialized yet. This occurs when initialization of sound card fails as well and it's superfluous. This commit removes the WARN_ON. Although the API to AMDTP domain does nothing, it's left for future usage. Fixes: 3ec3d7a3ff106 ("ALSA: firewire-lib: add AMDTP domain structure to handle several isoc contexts") Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Link: https://lore.kernel.org/r/20190906131414.15370-1-o-takashi@sakamocchi.jp Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-08-29ALSA: firewire-lib: fix isoc cycle count to which rx packet is scheduledTakashi Sakamoto
When introducing the list of packet descriptor, for rx packet, the calculation of scheduled isoc cycle is omitted. This commit fixes the bug. Fixes: f4f6ae7b7c1f ("ALSA: firewire-lib: use packet descriptor for IT context") Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-08-05ALSA: firewire-lib: localize kernel APIs to start/stop each AMDTP streamTakashi Sakamoto
As a result to support AMDTP domain, no drivers call kernel APIs to start/stop each AMDTP stream. This commit localize these APIs. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-08-05ALSA: firewire-lib: add a kernel API to start AMDTP streams in AMDTP domainTakashi Sakamoto
This commit adds a kernel API to start a couple of isochronous contexts for some AMDTP streams. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-08-05ALSA: firewire-lib: add a kernel API to add AMDTP stream into AMDTP domainTakashi Sakamoto
This commit adds a kernel API to insert AMDTP stream to list in AMDTP domain. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-08-05ALSA: firewire-lib: add a kernel API to stop a couple of AMDTP streams in ↵Takashi Sakamoto
AMDTP domain This commit adds a kernel API to stop a couple of isochronous contexts for AMDTP streams. The API is not protected with any lock primitive. Callers should use this with enough lock against concurrent access. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-08-05ALSA: firewire-lib: add AMDTP domain structure to handle several isoc contextsTakashi Sakamoto
This commit adds 'struct amdtp_domain' structure. This structure has list of instance of AMDTP stream to handle a couple of isochronous contexts. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-07-22ALSA: firewire-lib: process payload of isoc context according to packet ↵Takashi Sakamoto
descriptors This commit changes each of data block processing layer so that it receives list of packet descriptor. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-07-22ALSA: firewire-lib: pass packet descriptor to data block processing layerTakashi Sakamoto
This commit changes signature of callback function to call data block processing layer with packet descriptor. At present, the layer is called per packet. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-07-22ALSA: firewire-lib: code refactoring to process context payloadsTakashi Sakamoto
This is code refactoring for common processing for payloads of ishocornous context. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-07-22ALSA: firewire-lib: code refactoring to process PCM substreamTakashi Sakamoto
This is code refactoring to separate PCM substream processing from packet queueing. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-07-22ALSA: firewire-lib: use packet descriptor for IR contextTakashi Sakamoto
This commit uses packet descriptor to parse headers of IR context and parse timing information for sequence transferred by target device. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-07-22ALSA: firewire-lib: use packet descriptor for IT contextTakashi Sakamoto
This commit uses packet descriptor to parse headers of IT context and generate timing information for ideal sequence. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-07-22ALSA: firewire-lib: add list of packet descriptorTakashi Sakamoto
In current implementation of ALSA IEC 61883-1/6 packet streaming engine, 16 packets are handled in one interrupt of isochronous context of OHCI 1394. Overall packet processing runs for each. However, this is not better in a point to split the processing into several parts. This commit is an attempt to add intermediate representation for parameters required for the parts. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-07-22ALSA: firewire-lib: pass no syt information to data block processing layerTakashi Sakamoto
In a previous commit, the variable passed from packet streaming layer for syt variable is useless. This commit obsoletes it. In my future work, the syt information is passed to data block processing layer by another way. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-07-22ALSA: firewire-lib: add syt_override member for some protocolsTakashi Sakamoto
Some protocols don't use syt field of CIP header to represent presentation timestamp. For such protocol, ALSA IEC 61883-1/6 packet streaming engine uses a pointer into local variable for the value of syt to call data block processing layer. However, it can decide the value when initializing packet streaming layer. This commit adds 'syt_override' member for packet streaming layer. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-07-22ALSA: firewire-lib: operate data block counter in top level of processing ↵Takashi Sakamoto
for IR context In ALSA IEC 61883-1/6 packet streaming engine, two types of data block counter are supported. This commit applies code refactoring to make it explicitly for IR context. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-07-22ALSA: firewire-lib: operate data block counter in top level of processing ↵Takashi Sakamoto
for IT context In ALSA IEC 61883-1/6 packet streaming engine, two types of data block counter are supported. This commit applies code refactoring to make it explicitly for IT context. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-07-22ALSA: firewire-lib: pass data block counter to data block processing layerTakashi Sakamoto
This is a preparation for future commit that 'struct amdtp_stream.data_block_count' does not represent the value of data block count for current data block. However, data block count is required for calculation of sequence index in sequence-multiplied data channel. Some of data block processing layer require it; e.g. for AM824 data block. This commit passes data block count to the processing layer. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-07-22ALSA: firewire-lib: pass data block count as an argument to tracepoints eventTakashi Sakamoto
This is a preparation for future commit that 'struct amdtp_stream.data_block_count' does not represent the value of data block count for current data block. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-07-22ALSA: firewire-lib: obsolete ctx_data.tx.first_dbc with CIP_UNALIGHED_DBC flagTakashi Sakamoto
Recent firmware for Fireworks board module have a quirk to start transmission of CIP with non-zero value for its data block counter. In current implementation of ALSA firewire stack, the quirk is handled by 'struct amdtp_stream.ctx_data.tx.first_dbc' with value 0x02. However, the value comes from reverse engineering. It's better to handle this quirk without the explicit value. In a process to parse CIP header, the quirk of data block counter affects decision of sequence index in sequence-multiplexed data channel; i.e. MIDI conformant data channel. In Fireworks, the index is decided by the number of data blocks from top of the same CIP, thus the value of data block counter is useless. This commit adds CIP_UNALIGHED_DBC flag and obsoletes the explicit value for this quirk. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-07-08ALSA: firewire-lib: code refactoring for local variablesTakashi Sakamoto
It's better to use int type for loop index. For consistency, the name of local variable for the number of data block should be plural. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-07-08ALSA: firewire-lib: code refactoring for post operation to data block counterTakashi Sakamoto
As a result of former commits, post operation to data block count for cases without CIP_DBC_IS_END_EVENT can be done just with data_block_counter member of amdtp_stream structure. This commit adds code refactoring to obsolete local variable for data block counter. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-07-08ALSA: firewire-lib: code refactoring for error path of parser for CIP headerTakashi Sakamoto
When a parser for CIP header returns -EAGAIN, no extra care is needed to probe tracepoints event. This commit adds code refactoring for the error path. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
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