June 2021 - Alsa-devel - mailman.alsa-project.org

[PATCH -next] ALSA: trident: Fix build error
by YueHaibing 12 Jun '21

12 Jun '21

sound/pci/trident/trident_memory.c: In function ‘set_tlb_bus’: sound/pci/trident/trident_memory.c:85:35: error: ‘pagetr’ undeclared (first use in this function); did you mean ‘page’? for (i = 0; i < UNIT_PAGES; i++, pagetr++) { ^~~~~~ page Fixes: 74fb98311c4e ("ALSA: trident: Drop shadow TLB pointer table") Signed-off-by: YueHaibing <yuehaibing(a)huawei.com> --- sound/pci/trident/trident_memory.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/sound/pci/trident/trident_memory.c b/sound/pci/trident/trident_memory.c index f831ec02702f..4ad3855101c9 100644 --- a/sound/pci/trident/trident_memory.c +++ b/sound/pci/trident/trident_memory.c @@ -82,7 +82,7 @@ static inline void set_tlb_bus(struct snd_trident *trident, int page, { int i; page *= UNIT_PAGES; - for (i = 0; i < UNIT_PAGES; i++, pagetr++) { + for (i = 0; i < UNIT_PAGES; i++, page++) { __set_tlb_bus(trident, page, addr); addr += SNDRV_TRIDENT_PAGE_SIZE; } -- 2.17.1

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Question about upmix plugin
by GitHub issues - opened 11 Jun '21

11 Jun '21

alsa-project/alsa-plugins issue #25 was opened from krumpfwylg: Hi, I've noticed the [latest commits](https://github.com/alsa-project/alsa-plugins/pull/2) done to the upmix plugin, but there's something I don't understand. Line 24 of pcm_upmix.c is _#define UPMIX_PCM_FORMAT SND_PCM_FORMAT_S16_ Does that mean the upmix plugin is still only capable of using S16_LE format ? Or does the UPMIX_PCM_FORMAT value can get changed to S32_LE by tweaking it in asoundrc file ? Issue URL : https://github.com/alsa-project/alsa-plugins/issues/25 Repository URL: https://github.com/alsa-project/alsa-plugins

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Config parsing of pcm_rate broken since 1.1.7 (at least for a52 pcm plugin)
by GitHub issues - opened 11 Jun '21

11 Jun '21

alsa-project/alsa-lib issue #154 was opened from quequotion: As noted [in the mailing list](https://mailman.alsa-project.org/pipermail/alsa-devel/2019-December/1… back in 2019, config parsing (for alsa-plugins a52 pcm at least) has been broken since alsa-lib 1.1.7. As far as I know this was never bisected to a single commit in either alsa-lib or alsa-plugins. Looking at the mailing list discussion, it occurs to me that it may have given the impression that the config parser was broken when using [a patch that ports alsa-plugins to libswresample](https://git.harting.dev/anonfunc/alsa-plugins/commit/9cdbbb9874757b6f8fda7fb4ac2e3fc59da65946). Config parsing is broken *regardless* of that patch. @IdleGandalf worked around this by applying a patch to alsa-lib, in [src/pcm/pcm_rate.c](https://git.harting.dev/anonfunc/alsa-lib/commit/646bc80a63b0220300678a38e0c26a9a13af6fc0), but never got a response if this was an appropriate method to resolve the issue. Should this be fixed in alsa-lib or in alsa-plugins? Note: above links are to mirrors of the original patches, also in a repository owned by @IdleGandalf as far as I can tell. The links in the mailing list discussion are now 404. Issue URL : https://github.com/alsa-project/alsa-lib/issues/154 Repository URL: https://github.com/alsa-project/alsa-lib

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SNDRV_PCM_IOCTL_READI_FRAMES returns EIO
by Muni Sekhar 11 Jun '21

11 Jun '21

Hi all, I am using a USB sound card(snd-usb-audio), and it fails while doing the audio recording "arecord: pcm_read:2032: read error: Input/output error". I noticed recording(arecord) audio data on a USB sound card fails at SNDRV_PCM_IOCTL_READI_FRAMES is giving EIO. Can someone please clarify when the kernel returns EIO for Ioctl SNDRV_PCM_IOCTL_READI_FRAMES? and is there a workaround for this? Output of the alsamixer is attached. -- Thanks, Sekhar

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[PATCH 0/3] ALSA: bebob: remove workarounds for suppressed quirks
by Takashi Sakamoto 11 Jun '21

11 Jun '21

Hi, As a result to apply the commit 1bd1b3be8655 ("ALSA: bebob: perform sequence replay for media clock recovery"), some quirks seem to be suppressed. This patchset removes workarounds for the suppressed quirks and includes code cleanup. Takashi Sakamoto (3): ALSA: bebob: dismiss sleep after breaking connections ALSA: bebob: delete workaround for protocol version 3 ALSA: bebob: code refactoring for model-dependent quirks sound/firewire/bebob/bebob.c | 41 ++++++++++++++++++++--------- sound/firewire/bebob/bebob.h | 10 ++++--- sound/firewire/bebob/bebob_stream.c | 32 ++++++---------------- 3 files changed, 42 insertions(+), 41 deletions(-) -- 2.27.0

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Add support for automatic attributes in Topology2.0
by GitHub pull_request - opened 11 Jun '21

11 Jun '21

alsa-project/alsa-utils pull request #97 was opened from ranj063: Add support for automatic attributes in Topology2.0 and also add support for processing objects that are simply used to update the parent object's private data. Request URL : https://github.com/alsa-project/alsa-utils/pull/97 Patch URL : https://github.com/alsa-project/alsa-utils/pull/97.patch Repository URL: https://github.com/alsa-project/alsa-utils

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ALSA lib pcm_dmix.c:1063:(snd_pcm_dmix_open) unable to create IPC semaphore
by GitHub issues - edited 11 Jun '21

11 Jun '21

alsa-project/alsa-lib issue #153 was edited from Cean1024: alsa info: alsa-config-1.0 alsa-lib-1.1.5 alsa-plugins-1.1.5 alsa-utils-1.1.5 asound.conf: ``` pcm.dmixer { type dmix ipc_key 1024 slave { pcm "hw:0,0" period_time 0 period_size 1024 buffer_size 4096 rate 48000 format "S32_LE" channels 2 } bindings { 0 0 1 1 } } ``` test cmd: ``` arecord -f dat | aplay -f dat -D plug:dmixer ``` Issue URL : https://github.com/alsa-project/alsa-lib/issues/153 Repository URL: https://github.com/alsa-project/alsa-lib

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ALSA lib pcm_dmix.c:1063:(snd_pcm_dmix_open) unable to create IPC semaphore
by GitHub issues - edited 11 Jun '21

11 Jun '21

alsa-project/alsa-lib issue #153 was edited from Cean1024: alsa info: alsa-config-1.0 alsa-lib-1.1.5 alsa-plugins-1.1.5 alsa-utils-1.1.5 asound.conf: pcm.dmixer { type dmix ipc_key 1024 slave { pcm "hw:0,0" period_time 0 period_size 1024 buffer_size 4096 rate 48000 format "S32_LE" channels 2 } bindings { 0 0 1 1 } } test cmd: arecord -f dat | aplay -f dat -D plug:dmixer Issue URL : https://github.com/alsa-project/alsa-lib/issues/153 Repository URL: https://github.com/alsa-project/alsa-lib

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[PATCH v2 0/3] ALSA: pcm:firewire: allow to operate for period elapse event in process context
by Takashi Sakamoto 11 Jun '21

11 Jun '21

Hi, This patchset is revised version of my previous one: * https://lore.kernel.org/alsa-devel/20210609012244.24296-1-o-takashi@sakamoc… All of drivers in ALSA firewire stack have two chances to process isochronous packets of any isochronous context; in software IRQ context for 1394 OHCI, and in process context of ALSA PCM application. In the process context, callbacks of .pointer and .ack are utilized. The callbacks are done by ALSA PCM core under acquiring lock of PCM substream, In design of ALSA PCM core, call of snd_pcm_period_elapsed() is used for drivers to awaken user processes from waiting for available frames. The function voluntarily acquires lock of PCM substream, therefore it is not called in the process context since it causes dead lock. As a workaround to avoid the dead lock, all of drivers in ALSA firewire stack use workqueue to delegate the call. This patchset is my attempt for the issue. A variant of 'snd_pcm_period_elapsed()' without lock acquisition is going to be added, named 'snd_pcm_period_elapsed_under_stream_lock()'. The call is available in callbacks of .pointer and .ack of snd_pcm_ops structure. Changes from v1: * fix context section of kernel API documentation Takashi Sakamoto (3): ALSA: pcm: add snd_pcm_period_elapsed() variant without acquiring lock of PCM substream ALSA: firewire-lib: operate for period elapse event in process context ALSA: firewire-lib: obsolete workqueue for period update include/sound/pcm.h | 1 + sound/core/pcm_lib.c | 71 +++++++++++++++++++++++++++-------- sound/firewire/amdtp-stream.c | 46 +++++++---------------- sound/firewire/amdtp-stream.h | 1 - 4 files changed, 71 insertions(+), 48 deletions(-) -- 2.27.0

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ALSA lib pcm_dmix.c:1063:(snd_pcm_dmix_open) unable to create IPC semaphore
by GitHub issues - opened 11 Jun '21

11 Jun '21

alsa-project/alsa-lib issue #153 was opened from Cean1024: Issue URL : https://github.com/alsa-project/alsa-lib/issues/153 Repository URL: https://github.com/alsa-project/alsa-lib

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