linux/sound
Andrew Chant 5a222e8494 ALSA: usb-audio: UAC2 jack detection
This implements UAC2 jack detection support, presenting
jack status as a boolean read-only mono mixer.

The presence of any channel in the UAC2_TE_CONNECTOR
control for a terminal will result in the mixer saying
the jack is connected.

Mixer naming follows the convention in sound/core/ctljack.c,
terminating the mixer with " Jack".
For additional clues as to which jack is being presented,
the name is prefixed with " - Input Jack" or " - Output Jack"
depending on if it's an input or output terminal.

This is required because terminal names are ambiguous
between inputs and outputs and often duplicated -
Bidirectional terminal types (0x400 -> 0x4FF)
"... may be used separately for input only or output only.
These types require two Terminal descriptors. Both have the same type."
(quote from "USB Device Class Definition for Terminal Types")

Since bidirectional terminal types are common for headphone adapters,
this distinguishes between two otherwise identically-named
jack controls.

Tested with a UAC2 audio device with connector control capability.

Signed-off-by: Andrew Chant <achant@google.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2018-03-24 09:50:27 +01:00
..
ac97 ALSA: ac97: kconfig: Remove select of undefined symbol AC97 2018-02-12 08:16:39 +01:00
aoa License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
arm Merge remote-tracking branches 'asoc/topic/ac97', 'asoc/topic/ac97-mfd', 'asoc/topic/amd' and 'asoc/topic/arizona-mfd' into asoc-next 2017-11-10 21:31:02 +00:00
atmel ASoC: Updates for v4.14 2017-09-04 14:50:49 +02:00
core ALSA: pcm: Return -EBUSY for OSS ioctls changing busy streams 2018-03-23 22:18:05 +01:00
drivers ALSA: aloop: Fix access to not-yet-ready substream via cable 2018-03-22 10:40:27 +01:00
firewire vfs: do bulk POLL* -> EPOLL* replacement 2018-02-11 14:34:03 -08:00
hda ALSA: hda: Copying sync power state helper to core 2018-02-12 13:59:39 +01:00
i2c ASoC: Updates for v4.15 2017-11-13 15:45:57 +01:00
isa ALSA: gus: Delete an error message for a failed memory allocation in snd_gf1_dma_transfer_block() 2017-11-29 09:29:36 +01:00
mips ALSA: sgio2audio: Improve a size determination in snd_sgio2audio_create() 2017-11-29 09:29:31 +01:00
oss vfs: do bulk POLL* -> EPOLL* replacement 2018-02-11 14:34:03 -08:00
parisc License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
pci Merge branch 'for-linus' into for-next 2018-03-23 22:03:29 +01:00
pcmcia ALSA: pcmcia: constify snd_pcm_ops structures 2017-08-19 11:02:21 +02:00
ppc License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
sh ALSA: sh: aica: Convert timers to use timer_setup() 2017-10-05 08:20:17 +02:00
soc Merge remote-tracking branches 'asoc/fix/amd', 'asoc/fix/hdmi-codec', 'asoc/fix/rt5651', 'asoc/fix/samsung', 'asoc/fix/sgtl5000', 'asoc/fix/sunxi' and 'asoc/fix/wm-adsp' into asoc-linus 2018-03-12 09:14:07 -07:00
sparc License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
spi License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
synth ASoC: Updates for v4.15 2017-11-13 15:45:57 +01:00
usb ALSA: usb-audio: UAC2 jack detection 2018-03-24 09:50:27 +01:00
x86 ALSA: x86: Fix potential crash at error path 2018-02-28 08:46:00 +01:00
ac97_bus.c
Kconfig ASoC: Updates for v4.15 2017-11-13 15:45:57 +01:00
last.c
Makefile ASoC: Updates for v4.15 2017-11-13 15:45:57 +01:00
sound_core.c sound: Remove leftover msnd init declarations 2018-01-11 17:10:34 +01:00