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2019-09-14Merge branch 'for-next' into for-linusTakashi Iwai4-93/+171
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-09-10ALSA: firewire-tascam: check intermediate state of clock status and retryTakashi Sakamoto1-14/+28
2 bytes in MSB of register for clock status is zero during intermediate state after changing status of sampling clock in models of TASCAM FireWire series. The duration of this state differs depending on cases. During the state, it's better to retry reading the register for current status of the clock. In current implementation, the intermediate state is checked only when getting current sampling transmission frequency, then retry reading. This care is required for the other operations to read the register. This commit moves the codes of check and retry into helper function commonly used for operations to read the register. Fixes: e453df44f0d6 ("ALSA: firewire-tascam: add PCM functionality") Cc: <stable@vger.kernel.org> # v4.4+ Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Link: https://lore.kernel.org/r/20190910135152.29800-3-o-takashi@sakamocchi.jp Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-09-10ALSA: firewire-tascam: handle error code when getting current source of clockTakashi Sakamoto1-0/+3
The return value of snd_tscm_stream_get_clock() is ignored. This commit checks the value and handle error. Fixes: e453df44f0d6 ("ALSA: firewire-tascam: add PCM functionality") Cc: <stable@vger.kernel.org> # v4.4+ Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Link: https://lore.kernel.org/r/20190910135152.29800-2-o-takashi@sakamocchi.jp Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-09-06ALSA: firewire-tascam: add note for FE-8Takashi Sakamoto2-1/+23
TASCAM FE-8 is the rest of model in TASCAM FireWire series. This device has no functionality to process audio signal and MIDI messages. Instead, it transfers control messages to host system corresponding to operations for some faders, buttons and knobs on its surface. Unlike the other devices in this series, the control messages are transmitted by asynchronous transactions. Some registers of device are used for registration of destination address for the transaction. The transaction includes quadlet-aligned data up to 32 quadlets. Userspace applications can receive the transaction and parse it for control message via Linux FireWire subsystem, without any support by ALSA firewire-tascam driver. Therefore the driver gives no support for it. This commit removes placeholder for FE-8 and add some comment for its functionalities as notes. $ python2 linux-firewire-utils/src/crpp < ~/git/am-config-rom/tascam/tascam-fe8.img ROM header and bus information block ----------------------------------------------------------------- 400 040f4798 bus_info_length 4, crc_length 15, crc 18328 (should be 14256) 404 31333934 bus_name "1394" 408 20ff7002 irmc 0, cmc 0, isc 1, bmc 0, cyc_clk_acc 255, max_rec 7 (256) 40c 00022eff company_id 00022e | 410 a094dcb7 device_id ffa094dcb7 | EUI-64 00022effa094dcb7 root directory ----------------------------------------------------------------- 414 0004bccc directory_length 4, crc 48332 418 0300022e vendor 41c 0c0083c0 node capabilities per IEEE 1394 420 8d000006 --> eui-64 leaf at 438 424 d1000001 --> unit directory at 428 unit directory at 428 ----------------------------------------------------------------- 428 0003eda4 directory_length 3, crc 60836 42c 1200022e specifier id 430 13800001 version 434 d4000004 --> dependent info directory at 444 eui-64 leaf at 438 ----------------------------------------------------------------- 438 0002461e leaf_length 2, crc 17950 43c 00022eff company_id 00022e | 440 a094dcb7 device_id ffa094dcb7 | EUI-64 00022effa094dcb7 dependent info directory at 444 ----------------------------------------------------------------- 444 0002ae47 directory_length 2, crc 44615 448 81000002 --> descriptor leaf at 450 44c 82000006 --> bus dependent info leaf at 464 descriptor leaf at 450 ----------------------------------------------------------------- 450 0004a79e leaf_length 4, crc 42910 454 00000000 textual descriptor 458 00000000 minimal ASCII 45c 54415343 "TASC" 460 414d0000 "AM" bus dependent info leaf at 464 ----------------------------------------------------------------- 464 0004a7d8 leaf_length 4, crc 42968 468 00000000 46c 00000000 470 46452d38 474 00000000 Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Link: https://lore.kernel.org/r/20190906125544.13800-1-o-takashi@sakamocchi.jp Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-08-05ALSA: firewire-tascam: support AMDTP domainTakashi Sakamoto2-22/+34
This commit adds AMDTP domain support for ALSA firewire-tascam driver. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-08-05ALSA: firewire-tascam: code refactoring for initialization/destruction of ↵Takashi Sakamoto1-27/+44
AMDTP stream This commit is a preparation to support AMDTP domain. 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 Sakamoto1-23/+37
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-tascam: code refactoring for TASCAM data block processing layerTakashi Sakamoto1-23/+32
This is code refactoring for TASCAM data block processing layer so that it can receive 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 Sakamoto1-17/+22
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: pass no syt information to data block processing layerTakashi Sakamoto1-7/+4
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 Sakamoto1-2/+6
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: pass data block counter to data block processing layerTakashi Sakamoto1-6/+4
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>
2019-07-08Merge tag 'asoc-v5.3' of ↵Takashi Iwai10-18/+10
https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus ASoC: Updates for v5.3 This is a very big update, mainly thanks to Morimoto-san's refactoring work and some fairly large new drivers. - Lots more work on moving towards a component based framework from Morimoto-san. - Support for force disconnecting muxes from Jerome Brunet. - New drivers for Cirrus Logic CS47L35, CS47L85 and CS47L90, Conexant CX2072X, Realtek RT1011 and RT1308. Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-06-21ALSA: firewire-tascam: unify stop and release method for duplex streamsTakashi Sakamoto3-11/+5
>From callbacks for pcm and rawmidi interfaces, the functions to stop and release duplex streams are called at the same time. This commit merges the two functions. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-06-11ALSA: firewire-tascam: code refactoring for pcm.hw_params/hw_free callbacksTakashi Sakamoto1-48/+7
The pairs of pcm.hw_params callbacks and .hw_free callbacks for both direction have no differences. This commit unifies the pairs. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-06-11ALSA: firewire-tascam: minor code refactoring to finish streaming sessionTakashi Sakamoto1-16/+5
The operation to finish packet streaming corresponds to stopping isochronous contexts. This commit applies code refactoring to move codes to stop into a helper function to finish the session. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-06-11ALSA: firewire-tascam: update isochronous resources when starting packet ↵Takashi Sakamoto1-1/+12
streaming after bus reset After bus reset, isochronous resource manager releases all of allocated isochronous resources. The nodes to restart packet streaming should request reallocation of the resources. However, between the bus-reset and invocation of 'struct fw_driver.update' handler, ALSA PCM application can detect this situation by XRUN because the target device cancelled to transmit packets once bus-reset occurs. Due to the above mechanism, ALSA firewire-tascam driver just stops packet streaming in the update handler, thus pcm.prepare handler should request the reallocation. This commit requests the reallocation in pcm.prepare callback when bus generation is changed. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-06-11ALSA: firewire-tascam: reserve/release isochronous resources in ↵Takashi Sakamoto3-37/+66
pcm.hw_params/hw_free callbacks Once allocated, isochronous resources are available for packet streaming, even if the streaming is cancelled. For this reason, current implementation handles allocation of the resources and starting packet streaming at the same time. However, this brings complicated procedure to start packet streaming. This commit separates the allocation and starting. The allocation is done in pcm.hw_params callback and available till pcm.hw_free callback. Even if any XRUN occurs, pcm.prepare callback is done to restart packet streaming for allocated the resources. There are two points to stop packet streaming; in pcm.hw_params and pcm.prepare callbacks. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-06-11ALSA: firewire-tascam: code refactoring for release of isochronous resourcesTakashi Sakamoto1-10/+8
This commit is a part of preparation to perform allocation/release of isochronous channels in pcm.hw_params/hw_free callbacks. This commit obsoletes a helper function to release isochronous resources for both direction. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-06-11ALSA: firewire-tascam: code refactoring for reservation of isochronous resourcesTakashi Sakamoto1-22/+16
This commit is a part of preparation to perform allocation/release of isochronous channels in pcm.hw_params/hw_free callbacks. This commit applies minor code refactoring for a helper function to allocate isochronous resources. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-06-11ALSA: firewire-tascam: code refactoring for registration of isochronous channelsTakashi Sakamoto1-44/+40
This commit is a part of preparation to perform allocation/release of isochronous channels in pcm.hw_params/hw_free callbacks. The registration of isochronous channels is done just after allocation of isochronous resources. This commit separates the registration just before starting packet streaming. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-06-05treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 345Thomas Gleixner9-18/+9
Based on 1 normalized pattern(s): licensed under the terms of the gnu general public license version 2 extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 88 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Alexios Zavras <alexios.zavras@intel.com> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190530000437.521539229@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-22ALSA: firewire-lib: use union for directional parametersTakashi Sakamoto1-1/+1
Some parameters of struct amdtp_stream is dependent on direction. This commit uses union for such parameters to distinguish from common parameters. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-05-21treewide: Add SPDX license identifier - Makefile/KconfigThomas Gleixner1-0/+1
Add SPDX license identifiers to all Make/Kconfig files which: - Have no license information of any form These files fall under the project license, GPL v2 only. The resulting SPDX license identifier is: GPL-2.0-only Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-02-06ALSA: firewire: Remove superfluous snd_info_register() callsTakashi Iwai1-10/+2
The calls of snd_info_register() are superfluous and should be avoided at the procfs creation time. They are called at the end of the whole initialization via snd_card_register(). This patch drops such superfluous calls. Reviewed-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Tested-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2018-11-23ALSA: firewire-tascam: notify events of change of state for userspace ↵Takashi Sakamoto2-2/+65
applications In former commits, ALSA firewire-tascam driver queues events to notify change of state of control surface to userspace via ALSA hwdep interface. This commit implements actual notification of the events. The events are not governed by real time, thus no need to care underrun. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2018-11-23ALSA: firewire-tascam: apply small refactoring to handle several type of ↵Takashi Sakamoto1-12/+26
event for hwdep interface In later commits, ALSA firewire-tascam driver will allow userspace applications to receive notifications about changes of device state, transferred in tx isochronous packet. At present, all of drivers in ALSA firewire stack have mechanism to notify change of status of packet streaming, thus it needs to distinguish these two types of notification. This commit is a preparation for the above. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2018-11-23ALSA: firewire-tascam: queue events for change of control surfaceTakashi Sakamoto3-1/+41
Units of TASCAM FireWire series transfer image of states of the unit in tx isochronous packets. Demultiplexing of the states from the packets is done in software interrupt context regardless of any process context. In a view of userspace applications, it needs to have notification mechanism to catch change of the states. This commit implements a queue to store events for the notification. The image of states includes fluctuating data such as level of gain/volume for physical input/output and position of knobs. Therefore the events are queued corresponding to some control features only. Furthermore, the queued events are planned to be consumed by userspace applications via ALSA hwdep interface. This commit suppresses event queueing when no applications open the hwdep interface. However, the queue is maintained in an optimistic scenario, thus without any care against overrrun. This is reasonable because target events are useless just to handle PCM frames. It starts queueing when an usespace application opens hwdep interface, thus it's expected to read the queued events steadily. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2018-11-23ALSA: firewire-tascam: add new hwdep ioctl command to get state imageTakashi Sakamoto1-0/+10
In a previous commit, ALSA firewire-tascam driver stores state image from tx isochronous packets. This image includes states of knob, fader, button of control surface, level of gain/volume of each physical inputs/outputs, and so on. It's useful for userspace applications to read whole of the image. This commit adds a unique ioctl command for ALSA hwdep interface for the purpose. For actual meaning of each bits in this image, please refer to discussion in alsa-devel[1]. [1] http://mailman.alsa-project.org/pipermail/alsa-devel/2018-October/140785.html Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2018-11-23ALSA: firewire-tascam: pick up data of state from tx isochronous pakcetsTakashi Sakamoto2-1/+19
Units of TASCAM FireWire series multiplex PCM frames and state of control surface into the same tx isochronous packets. One isochronous packet includes a part of the state in a quadlet data. An image of the state consists of 64 quadlet data. This commit demultiplexes the state from tx isochronous packets. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2018-10-10ALSA: firewire: simplify cleanup process when failing to register sound cardTakashi Sakamoto1-14/+5
In former commits, .private_free callback releases resources just for data transmission. This release function can be called without the resources are actually allocated in error paths. This commit applies a small refactoring to clean up codes in error paths. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2018-10-10ALSA: firewire: release reference count of firewire unit in .remove callback ↵Takashi Sakamoto1-6/+3
of bus driver In a previous commit, drivers in ALSA firewire stack blocks .remove callback of bus driver. This enables to release members of private data in the callback after releasing device of sound card. This commit simplifies codes to release the members. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2018-10-10ALSA: firewire: block .remove callback of bus driver till all of ALSA ↵Takashi Sakamoto1-2/+2
character devices are released At present, in .remove callback of bus driver just decrease reference count of device for ALSA card instance. This delegates release of the device to a process in which the last of ALSA character device is released. On the other hand, the other drivers such as for devices on PCIe are programmed to block .remove callback of bus driver till all of ALSA character devices are released. For consistency of behaviour for whole drivers, this probably confuses users. This commit takes drivers in ALSA firewire stack to imitate the above behaviour. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2018-10-04ALSA: firewire: use managed-resource of fw unit device for private dataTakashi Sakamoto1-7/+3
At present, private data of each driver in ALSA firewire stack is allocated/freed by kernel slab allocator for corresponding unit on IEEE 1394 bus. In this case, resource-managed slab allocator is available to release memory object automatically just before releasing device structure for the unit. This idea can prevent runtime from memory leak due to programming mistakes. This commit uses the allocator for the private data. These drivers already use reference counter to maintain lifetime of device structure for the unit by a pair of fw_unit_get()/fw_unit_put(). The private data is safely released in a callback of 'struct snd_card.private_free(). Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2018-09-13ALSA: firewire-tascam: fix memory leak of private dataTakashi Sakamoto1-0/+1
Although private data of sound card instance is usually allocated in the tail of the instance, drivers in ALSA firewire stack allocate the private data before allocating the instance. In this case, the private data should be released explicitly at .private_free callback of the instance. This commit fixes memory leak following to the above design. Fixes: b610386c8afb ('ALSA: firewire-tascam: deleyed registration of sound card') Cc: <stable@vger.kernel.org> # v4.7+ Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2018-07-18ALSA: pcm: Nuke snd_pcm_lib_mmap_vmalloc()Takashi Iwai1-1/+0
snd_pcm_lib_mmap_vmalloc() was supposed to be implemented with somewhat special for vmalloc handling, but in the end, this turned to just the default handler, i.e. NULL. As the situation has never changed over decades, let's rip it off. Reviewed-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2018-05-28sound: Use octal not symbolic permissionsJoe Perches1-1/+1
Convert the S_<FOO> symbolic permissions to their octal equivalents as using octal and not symbolic permissions is preferred by many as more readable. see: https://lkml.org/lkml/2016/8/2/1945 Done with automated conversion via: $ ./scripts/checkpatch.pl -f --types=SYMBOLIC_PERMS --fix-inplace <files...> Miscellanea: o Wrapped one multi-line call to a single line Signed-off-by: Joe Perches <joe@perches.com> Acked-by: Vinod Koul <vkoul@kernel.org> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2018-02-12vfs: do bulk POLL* -> EPOLL* replacementLinus Torvalds1-1/+1
This is the mindless scripted replacement of kernel use of POLL* variables as described by Al, done by this script: for V in IN OUT PRI ERR RDNORM RDBAND WRNORM WRBAND HUP RDHUP NVAL MSG; do L=`git grep -l -w POLL$V | grep -v '^t' | grep -v /um/ | grep -v '^sa' | grep -v '/poll.h$'|grep -v '^D'` for f in $L; do sed -i "-es/^\([^\"]*\)\(\<POLL$V\>\)/\\1E\\2/" $f; done done with de-mangling cleanups yet to come. NOTE! On almost all architectures, the EPOLL* constants have the same values as the POLL* constants do. But they keyword here is "almost". For various bad reasons they aren't the same, and epoll() doesn't actually work quite correctly in some cases due to this on Sparc et al. The next patch from Al will sort out the final differences, and we should be all done. Scripted-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-11-28sound: annotate ->poll() instancesAl Viro1-2/+2
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2017-10-25locking/atomics: COCCINELLE/treewide: Convert trivial ACCESS_ONCE() patterns ↵Mark Rutland2-5/+5
to READ_ONCE()/WRITE_ONCE() Please do not apply this to mainline directly, instead please re-run the coccinelle script shown below and apply its output. For several reasons, it is desirable to use {READ,WRITE}_ONCE() in preference to ACCESS_ONCE(), and new code is expected to use one of the former. So far, there's been no reason to change most existing uses of ACCESS_ONCE(), as these aren't harmful, and changing them results in churn. However, for some features, the read/write distinction is critical to correct operation. To distinguish these cases, separate read/write accessors must be used. This patch migrates (most) remaining ACCESS_ONCE() instances to {READ,WRITE}_ONCE(), using the following coccinelle script: ---- // Convert trivial ACCESS_ONCE() uses to equivalent READ_ONCE() and // WRITE_ONCE() // $ make coccicheck COCCI=/home/mark/once.cocci SPFLAGS="--include-headers" MODE=patch virtual patch @ depends on patch @ expression E1, E2; @@ - ACCESS_ONCE(E1) = E2 + WRITE_ONCE(E1, E2) @ depends on patch @ expression E; @@ - ACCESS_ONCE(E) + READ_ONCE(E) ---- Signed-off-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: davem@davemloft.net Cc: linux-arch@vger.kernel.org Cc: mpe@ellerman.id.au Cc: shuah@kernel.org Cc: snitzer@redhat.com Cc: thor.thayer@linux.intel.com Cc: tj@kernel.org Cc: viro@zeniv.linux.org.uk Cc: will.deacon@arm.com Link: http://lkml.kernel.org/r/1508792849-3115-19-git-send-email-paulmck@linux.vnet.ibm.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-08-22ALSA: firewire: add const qualifier to identifiers for read-only symbolsTakashi Sakamoto1-1/+1
Drivers in ALSA firewire stack still includes some symbols which can be moved to a section for read-only symbols. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2017-06-08ALSA: firewire: arrange common PCM info/constraints for AMDTP engine ↵Takashi Sakamoto1-29/+6
applications In ALSA firewire stack, 8 drivers uses IEC 61883-1/6 engine for data transmission. They have common PCM info/constraints and duplicated codes. This commit unifies the codes into fireiwre-lib. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2017-06-07ALSA: firewire: process packets in 'struct snd_pcm_ops.ack' callbackTakashi Sakamoto1-0/+16
In recent commit for ALSA PCM core, some arrangement is done for 'struct snd_pcm_ops.ack' callback. This is called when appl_ptr is explicitly moved in intermediate buffer for PCM frames, except for some cases described later. For drivers in ALSA firewire stack, usage of this callback has a merit to reduce latency between time of PCM frame queueing and handling actual packets in recent isochronous cycle, because no need to wait for software IRQ context from isochronous context of OHCI 1394. If this works well in a case that mapped page frame is used for the intermediate buffer, user process should execute some commands for ioctl(2) to tell the number of handled PCM frames in the intermediate buffer just after handling them. Therefore, at present, with a combination of below conditions, this doesn't work as expected and user process should wait for the software IRQ context as usual: - when ALSA PCM core judges page frame mapping is available for status data (struct snd_pcm_mmap_status) and control data (struct snd_pcm_mmap_control). - user process handles PCM frames by loop just with 'snd_pcm_mmap_begin()' and 'snd_pcm_mmap_commit()'. - user process uses PCM hw plugin in alsa-lib to operate I/O without 'sync_ptr_ioctl' option. Unfortunately, major use case include these three conditions. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2017-05-22ALSA: firewire: remove support for 16 bit PCM samples in playback substreamTakashi Sakamoto3-67/+3
In IEC 61883-6, AM824 is described as format of data block. In this format, one data block consists of several data channels, which is aligned to 32 bit. One data channel has 8 bit label field and 24 bit data field. PCM frames are transferred in Multi Bit Linear Audio (MBLA) data channel. This channel can include 16/20/24 bit PCM sample. As long as I know, models which support IEC 61883-1/6 doesn't allow to switch bit length of PCM sample in MBLA data channel. They always transmit/receive PCM frames of 24 bit length. This can be seen for the other models which support protocols similar to IEC 61883-1/6. On the other hand, current drivers for these protocols supports 16 bit length PCM sample in playback substream. In this case, PCM sample is put into the MBLA data channel with 8 bit padding in LSB side. Although 16 bit PCM sample is major because it's in CD format, this doesn't represent device capability as is. This commit removes support for 16 bit PCM samples in playback substream. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Acked-by: Clemens Ladisch <clemens@ladisch.de> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2017-04-14ALSA: firewire-tascam: support drain callback for MIDI playback substreamTakashi Sakamoto1-2/+6
ALSA driver for TASCAM FireWire series transfers MIDI messages in system workqueue. In current design of the driver, applications should wait for sequence of transmission when they close ALSA rawmidi character devices. However, when considering design of rawmidi interface, it's preferable to wait in drain ioctl. This commit adds support for the drain ioctl to wait for the end of the transmission. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2017-04-14ALSA: firewire-tascam: move message parameters for async midi portTakashi Sakamoto3-21/+19
Units on TASCAM FireWire series handle MIDI messages with support for running status. Drivers for the series should remember current running status and transfer valid MIDI messages. For this purpose, current ALSA driver for the series has some members in its top-level structure. This is due to better abstraction of async midi port. Nowadays, the abstraction was localized just for the driver. This commit moves the members to structure for async midi port. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2017-04-14ALSA: firewire-tascam: initialize parameters at open of rawmidi character ↵Takashi Sakamoto3-14/+7
devices In current design of ALSA driver for TASCAM FireWire series, initialization of members in asymc midi port structure is done at device probing. Some of the members should be initialized every time to use rawmidi devices because they're changed in sequence of transmission for MIDI messages. This commit adds a new function to initialize them. Invariant parameters during object lifetime are kept as is. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2017-04-14ALSA: firewire-tascam: use fixed-length array for message cache to async ↵Takashi Sakamoto2-17/+2
midi port ALSA driver for TASCAM FireWire series internally allocates 4 byte buffer for asynchronous transaction to transfer MIDI messages. However, the buffer can be allocated with memory object of parent structure. This commit adds 4 byte array as a member of the structure and obsoletes the redundant allocation. This is deallocated with memory object of parent structure. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2017-04-14ALSA: firewire-tascam: use the same address for asynchronous transaction for ↵Takashi Sakamoto2-7/+5
MIDI message Units on TASCAM FireWire series receive MIDI messages by asynchronous transactions on IEEE 1394 bus. Although the transaction is sent to a certain register, current ALSA driver for this series has a redundant design. This commit use the same address for the transaction. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2017-04-14ALSA: firewire-tascam: send fixed-length transaction for async midi portTakashi Sakamoto2-17/+8
TASCAM FireWire series uses asynchronous transactions with fixed length payload for MIDI messaging. On the other hand, ALSA driver for the series has a redundant design to handle different length of payload. This commit removes the redundant abstraction. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
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