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bcdbd3b788
linux/sound/pci
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Oswald Buddenhagen bcdbd3b788 ALSA: emu10k1: enable bit-exact playback, part 2: voice attenuation 
The voice volume is a raw fractional multiplier that can't actually
represent 1.0. To still enable real pass-through, we now set the volume
to 0.5 (which results in no loss of precision, as the FX bus provides
fractional values) and scale up the samples in DSP code.

To maintain backwards compatibility with existing configuration files,
we rescale the values in the mixer controls. The range is extended
upwards from 0xffff to 0x1fffd, which actually introduces the
possibility of specifying an amplification.

There is still a minor incompatibility with user space, namely if
someone loaded custom DSP code. They'll just get half the volume, so
this doesn't seem like a big deal.

Signed-off-by: Oswald Buddenhagen <oswald.buddenhagen@gmx.de>
Link: https://lore.kernel.org/r/20230514170323.3408834-8-oswald.buddenhagen@gmx.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2023-05-16 11:11:04 +02:00
..
ac97 mfd: remove ucb1400 support 2023-02-01 17:23:38 +01:00
ali5451 ALSA: ali5451: Fix the missing snd_card_free() call at probe error 2022-04-12 17:58:19 +02:00
asihpi ALSA: asihpi: remove unused loop_count variable 2023-03-29 14:40:43 +02:00
au88x0 ALSA: au88x0: use explicitly signed char 2022-10-25 15:14:29 +02:00
aw2 ALSA: aw2: Fix the missing snd_card_free() call at probe error 2022-04-12 17:58:38 +02:00
ca0106 ALSA: ca0106: Use snd_ctl_rename() to rename a control 2022-10-21 08:17:11 +02:00
cs46xx ALSA: cs46xx: Fix missing snd_card_free() call at probe error 2022-07-05 17:24:05 +02:00
cs5535audio ALSA: cs5535audio: Remove the redundant assignment 2022-11-07 09:16:31 +01:00
ctxfi ALSA: ctxfi: fix typo in comment 2022-05-23 09:48:29 +02:00
echoaudio Merge branch 'for-linus' into for-next 2022-04-13 10:49:49 +02:00
emu10k1 ALSA: emu10k1: enable bit-exact playback, part 2: voice attenuation 2023-05-16 11:11:04 +02:00
hda sound fixes for 6.4-rc1 2023-05-06 08:07:11 -07:00
ice1712 ALSA: ice1712: Delete unreachable code in aureon_add_controls() 2023-03-03 14:30:46 +01:00
korg1212 ALSA: korg1212: Fix the missing snd_card_free() call at probe error 2022-04-12 17:58:30 +02:00
lola ALSA: lola: Bounds check loop iterator against streams array size 2022-05-21 08:48:57 +02:00
lx6464es ALSA: pci: lx6464es: fix a debug loop 2023-02-01 13:14:26 +01:00
mixart ALSA: mixart: Add sanity check for timer notify streams 2021-12-07 16:35:58 +01:00
nm256 ALSA: nm256: Don't call card private_free at probe error path 2022-04-12 17:58:44 +02:00
oxygen ALSA: oxygen: Fix the missing snd_card_free() call at probe error 2022-04-12 17:58:40 +02:00
pcxhr ALSA: pcxhr: "fix" PCXHR_REG_TO_PORT definition 2021-09-16 11:09:04 +02:00
riptide ALSA: riptide: Fix the missing snd_card_free() call at probe error 2022-04-12 17:58:31 +02:00
rme9652 ALSA: hdspm: remove unused copy_u32_le function 2023-03-24 07:50:07 +01:00
trident ALSA: trident: Allocate resources with device-managed APIs 2021-07-19 16:17:08 +02:00
vx222 ALSA: vx222: fix null-ptr-deref 2021-09-07 07:13:19 +02:00
ymfpci sound updates for 6.4-rc1 2023-04-27 10:58:37 -07:00
ad1889.c ALSA: ad1889: Fix the missing snd_card_free() call at probe error 2022-04-12 17:58:18 +02:00
ad1889.h
ak4531_codec.c ALSA: ak4531: Fix assignment in if condition 2021-06-09 17:29:49 +02:00
als300.c ALSA: als300: Fix the missing snd_card_free() call at probe error 2022-04-12 17:58:38 +02:00
als4000.c ALSA: als4000: Fix the missing snd_card_free() call at probe error 2022-04-12 17:58:19 +02:00
atiixp_modem.c ALSA: atiixp: Fix the missing snd_card_free() call at probe error 2022-04-12 17:58:20 +02:00
atiixp.c ALSA: atiixp: Fix the missing snd_card_free() call at probe error 2022-04-12 17:58:20 +02:00
azt3328.c ALSA: azt3328: Remove the unused function snd_azf3328_codec_outl() 2022-12-22 09:12:26 +01:00
azt3328.h
bt87x.c ALSA: bt87x: Fix the missing snd_card_free() call at probe error 2022-04-12 17:58:36 +02:00
cmipci.c ALSA: cmipci: Fix the missing snd_card_free() call at probe error 2022-04-12 17:58:39 +02:00
cs4281.c ALSA: cs4281: Fix the missing snd_card_free() call at probe error 2022-04-12 17:58:23 +02:00
cs5530.c ALSA: cs5530: Allocate resources with device-managed APIs 2021-07-19 16:16:43 +02:00
ens1370.c ASoC: doc: Update dead links 2022-06-30 10:56:27 +01:00
ens1371.c
es1938.c ALSA: es1938: Fix the missing snd_card_free() call at probe error 2022-04-12 17:58:26 +02:00
es1968.c ALSA: es1968: Fix the missing snd_card_free() call at probe error 2022-04-12 17:58:27 +02:00
fm801.c ALSA: fm801: Fix the missing snd_card_free() call at probe error 2022-04-12 17:58:27 +02:00
intel8x0.c ALSA: intel8x0: Fix the missing snd_card_free() call at probe error 2022-04-12 17:58:29 +02:00
intel8x0m.c ALSA: intel8x0: Fix the missing snd_card_free() call at probe error 2022-04-12 17:58:29 +02:00
Kconfig ALSA: emu10k1: update label & help in config system 2023-04-06 10:14:23 +02:00
maestro3.c ALSA: maestro3: Fix the missing snd_card_free() call at probe error 2022-04-12 17:58:30 +02:00
Makefile
rme32.c ALSA: rme32: Fix the missing snd_card_free() call at probe error 2022-04-12 17:58:32 +02:00
rme96.c ALSA: rme96: Fix the missing snd_card_free() call at probe error 2022-04-12 17:58:32 +02:00
sis7019.c ALSA: sis7019: Fix the missing error handling 2022-04-12 17:58:35 +02:00
sis7019.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 274 2019-06-05 17:30:30 +02:00
sonicvibes.c ALSA: sonicvibes: Fix the missing snd_card_free() call at probe error 2022-04-12 17:58:33 +02:00
via82xx_modem.c ALSA: via82xx: Fix the missing snd_card_free() call at probe error 2022-04-12 17:58:34 +02:00
via82xx.c ALSA: via82xx: Fix the missing snd_card_free() call at probe error 2022-04-12 17:58:34 +02:00