Takashi Iwai 37a3a98ef6 ALSA: hda - Enable runtime PM only for discrete GPU ... The recent change of vga_switcheroo allowed the runtime PM for HD-audio on AMD GPUs, but this also resulted in a regression. When the HD-audio controller driver gets runtime-suspended, HD-audio link is turned off, and the hotplug notification is ignored. This leads to the inconsistent audio state (the connection isn't notified and ELD is ignored). The best fix would be to implement the proper ELD notification via the audio component, but it's still not ready. As a quick workaround, this patch adds the check of runtime_idle and allows the runtime suspend only when the vga_switcheroo is bound with discrete GPU. That is, a system with a single GPU and APU would be again without runtime PM to keep the HD-audio link for the hotplug notification and ELD read out. Also, the codec->auto_runtime_pm flag is set only for the discrete GPU at the time GPU gets bound via vga_switcheroo (i.e. only dGPU is forcibly runtime-PM enabled), so that APU can still get the ELD notification. For identifying which GPU is bound, a new vga_switcheroo client callback, gpu_bound, is implemented. The vga_switcheroo simply calls this when GPU is bound, and tells whether it's dGPU or APU. Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=200945 Fixes: 07f4f97d7b ("vga_switcheroo: Use device link for HDA controller") Reported-by: Jian-Hong Pan <jian-hong@endlessm.com> Tested-by: Jian-Hong Pan <jian-hong@endlessm.com> Acked-by: Lukas Wunner <lukas@wunner.de> Signed-off-by: Takashi Iwai <tiwai@suse.de>		2018-09-13 17:58:30 +02:00
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ac97
ali5451
asihpi
au88x0
aw2
ca0106
cs46xx
cs5535audio
ctxfi
echoaudio
emu10k1	ALSA: emu10k1: fix possible info leak to userspace on SNDRV_EMU10K1_IOCTL_INFO	2018-09-10 17:18:28 +02:00
hda	ALSA: hda - Enable runtime PM only for discrete GPU	2018-09-13 17:58:30 +02:00
ice1712
korg1212
lola
lx6464es
mixart	ALSA: mixart: Mark expected switch fall-through	2018-08-09 08:52:04 +02:00
nm256
oxygen
pcxhr
riptide
rme9652
trident
vx222
ymfpci
ad1889.c
ad1889.h
ak4531_codec.c
als300.c
als4000.c
atiixp.c
atiixp_modem.c
azt3328.c
azt3328.h
bt87x.c
cmipci.c
cs4281.c
cs5530.c
ens1370.c
ens1371.c
es1938.c
es1968.c
fm801.c
intel8x0.c
intel8x0m.c
Kconfig
maestro3.c
Makefile
rme32.c
rme96.c
sis7019.c
sis7019.h
sonicvibes.c
via82xx.c
via82xx_modem.c