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linux/sound/core
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Jaroslav Kysela a135dfb5de ALSA: led control - add sysfs kcontrol LED marking layer 
We need to manage the kcontrol entries association for the LED trigger
from the user space. This patch adds a layer to the sysfs tree like:

/sys/devices/virtual/sound/ctl-led/mic
   + card0
   |  + attach
   |  + detach
   |  ...
   + card1
      + attach
      ...

Operations:

  attach and detach
    - amixer style ID is accepted and easy strings for numid and
      simple names
  reset
    - reset all associated kcontrol entries
  list
    - list associated kcontrol entries (numid values only)

Additional symlinks:

/sys/devices/virtual/sound/ctl-led/mic/card0/card ->
  /sys/class/sound/card0

/sys/class/sound/card0/controlC0/led-mic ->
  /sys/devices/virtual/sound/ctl-led/mic/card0

Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Link: https://lore.kernel.org/r/20210317172945.842280-7-perex@perex.cz
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-03-30 15:41:30 +02:00
..
oss ALSA: Convert strlcpy to strscpy when return value is unused 2021-01-08 09:30:05 +01:00
seq Merge branch 'for-linus' into for-next 2021-01-18 17:39:23 +01:00
compress_offload.c ALSA: Convert strlcpy to strscpy when return value is unused 2021-01-08 09:30:05 +01:00
control_compat.c ALSA: compat_ioctl: avoid compat_alloc_user_space 2020-09-21 10:37:07 +02:00
control_led.c ALSA: led control - add sysfs kcontrol LED marking layer 2021-03-30 15:41:30 +02:00
control.c ALSA: control - add generic LED trigger module as the new control layer 2021-03-30 15:33:58 +02:00
ctljack.c ALSA: Convert strlcpy to strscpy when return value is unused 2021-01-08 09:30:05 +01:00
device.c ALSA: core: Add snd_device_get_state() helper 2020-03-23 18:09:19 +01:00
hrtimer.c ALSA: timer: Replace tasklet with work 2020-09-09 18:32:52 +02:00
hwdep_compat.c ALSA: compat_ioctl: avoid compat_alloc_user_space 2020-09-21 10:37:07 +02:00
hwdep.c ALSA: Convert strlcpy to strscpy when return value is unused 2021-01-08 09:30:05 +01:00
info_oss.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
info.c ALSA: info: Drop WARN_ON() from buffer NULL sanity check 2020-07-17 10:59:38 +02:00
init.c ALSA: pcm: Call sync_stop at disconnection 2021-02-08 16:00:28 +01:00
isadma.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
jack.c ALSA: jack: implement software jack injection via debugfs 2021-02-02 10:37:07 +01:00
Kconfig ALSA: control - add generic LED trigger module as the new control layer 2021-03-30 15:33:58 +02:00
Makefile ALSA: control - add generic LED trigger module as the new control layer 2021-03-30 15:33:58 +02:00
memalloc.c ALSA: memalloc: Align buffer allocations in page size 2020-12-18 17:09:10 +01:00
memory.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
misc.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
pcm_compat.c ALSA: pcm: Fix sparse warnings wrt snd_pcm_state_t 2020-01-31 16:23:13 +01:00
pcm_dmaengine.c ASoC: dmaengine_pcm: add peripheral configuration 2021-02-05 17:16:41 +00:00
pcm_drm_eld.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
pcm_iec958.c ALSA: core: pcm_iec958: fix kernel-doc 2020-07-07 10:22:33 +02:00
pcm_lib.c ALSA: pcm: use krealloc_array() 2020-12-15 12:13:37 -08:00
pcm_local.h ALSA: pcm: Use for_each_pcm_substream() macro 2021-02-08 16:01:01 +01:00
pcm_memory.c ALSA: pcm: Use for_each_pcm_substream() macro 2021-02-08 16:01:01 +01:00
pcm_misc.c ASoC: Updates for v5.7 2020-03-30 13:43:00 +02:00
pcm_native.c ALSA: pcm: Use for_each_pcm_substream() macro 2021-02-08 16:01:01 +01:00
pcm_param_trace.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
pcm_timer.c ALSA: timer: Constify snd_timer_hardware definitions 2020-01-03 09:24:07 +01:00
pcm_trace.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
pcm.c ALSA: pcm: Use for_each_pcm_substream() macro 2021-02-08 16:01:01 +01:00
rawmidi_compat.c ALSA: Avoid using timespec for struct snd_rawmidi_status 2019-12-11 22:06:16 +01:00
rawmidi.c ALSA: Convert strlcpy to strscpy when return value is unused 2021-01-08 09:30:05 +01:00
seq_device.c ALSA: core: Constify snd_device_ops definitions 2020-01-03 09:23:51 +01:00
sgbuf.c ALSA: memalloc: Make SG-buffer helper usable for continuous buffer, too 2020-06-15 18:01:52 +02:00
sound_oss.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
sound.c ALSA: core - add missing compress device type to /proc/asound/devices 2021-02-10 10:31:53 +01:00
timer_compat.c ALSA: Convert strlcpy to strscpy when return value is unused 2021-01-08 09:30:05 +01:00
timer.c ALSA: Convert strlcpy to strscpy when return value is unused 2021-01-08 09:30:05 +01:00
vmaster.c ALSA: Replace the word "slave" in vmaster API 2020-07-20 10:10:47 +02:00