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bacd861452
linux_dsm_epyc7002/sound/pci
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Kai-Heng Feng bacd861452 ALSA: hda: Allow HDA to be runtime suspended when dGPU is not bound to a driver 
Nvidia proprietary driver doesn't support runtime power management, so
when a user only wants to use the integrated GPU, it's a common practice
to let dGPU not to bind any driver, and let its upstream port to be
runtime suspended. At the end of runtime suspension the port uses
platform power management to disable power through _OFF method of power
resource, which is listed by _PR3.

After commit b516ea586d ("PCI: Enable NVIDIA HDA controllers"), when
the dGPU comes with an HDA function, the HDA won't be suspended if the
dGPU is unbound, so the power resource can't be turned off by its
upstream port driver.

Commit 37a3a98ef6 ("ALSA: hda - Enable runtime PM only for
discrete GPU") only allows HDA to be runtime suspended once GPU is
bound, to keep APU's HDA working.

However, HDA on dGPU isn't that useful if dGPU is not bound to any
driver.  So let's relax the runtime suspend requirement for dGPU's HDA
function, to disable the power source to save lots of power.

BugLink: https://bugs.launchpad.net/bugs/1840835
Fixes: b516ea586d ("PCI: Enable NVIDIA HDA controllers")
Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Link: https://lore.kernel.org/r/20191018073848.14590-2-kai.heng.feng@canonical.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-10-21 15:14:07 +02:00
..
ac97 ALSA: ac97: remove unused variable 'snd_ac97_controls_master_mono' 2019-08-09 11:28:43 +02:00
ali5451 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 88 2019-05-24 17:37:52 +02:00
asihpi ASoC: Updates for v5.3 2019-07-08 14:45:34 +02:00
au88x0 ALSA: au88x0: Remove unneeded variable: "changed" 2019-07-15 08:53:50 +02:00
aw2 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 456 2019-06-19 17:09:09 +02:00
ca0106 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
cs46xx treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
cs5535audio treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
ctxfi treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 364 2019-06-05 17:37:09 +02:00
echoaudio ALSA: echoaudio: Replace kmalloc + memcpy with kmemdup 2019-07-25 17:50:07 +02:00
emu10k1 ALSA: emu10k1: Remove unneeded variable "change" 2019-07-15 08:54:09 +02:00
hda ALSA: hda: Allow HDA to be runtime suspended when dGPU is not bound to a driver 2019-10-21 15:14:07 +02:00
ice1712 sound fixes for 5.2-rc5 2019-06-14 05:37:06 -10:00
korg1212 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
lola treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
lx6464es ALSA: lx6464es - add support for LX6464ESe pci express variant 2019-09-08 12:54:00 +02:00
mixart treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
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riptide treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
rme9652 ALSA: rme9652: Unneeded variable: "result". 2019-07-15 08:54:35 +02:00
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ad1889.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
ak4531_codec.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
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azt3328.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
bt87x.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 32 2019-05-24 17:27:10 +02:00
cmipci.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
cs4281.c ASoC: Updates for v5.3 2019-07-08 14:45:34 +02:00
cs5530.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 118 2019-05-24 17:39:02 +02:00
ens1370.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
ens1371.c
es1938.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
es1968.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
fm801.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
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intel8x0m.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
Kconfig sound: Fix Kconfig indentation 2019-10-07 03:53:03 +02:00
maestro3.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
rme32.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61 2019-05-24 17:36:45 +02:00
rme96.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
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sonicvibes.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
via82xx_modem.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
via82xx.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00