linux/drivers
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
..
accessibility
acpi libnvdimm-for-4.19_misc 2018-08-25 18:13:10 -07:00
amba
android android: binder: Rate-limit debug and userspace triggered err msgs 2018-08-08 11:05:47 +02:00
ata Merge branch 'for-4.19' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata 2018-08-24 13:20:33 -07:00
atm
auxdisplay Char/Misc driver patches for 4.19-rc1 2018-08-18 11:04:51 -07:00
base Driver core patches for 4.19-rc1 2018-08-18 11:44:53 -07:00
bcma
block Merge branch 'ida-4.19' of git://git.infradead.org/users/willy/linux-dax 2018-08-26 11:48:42 -07:00
bluetooth Bluetooth: mediatek: pass correct size to h4_recv_buf() 2018-08-13 15:59:39 +02:00
bus ARM: SoC driver updates 2018-08-23 13:52:46 -07:00
cdrom
char RTC for 4.19 2018-08-20 16:30:27 -07:00
clk ARM: SoC driver updates 2018-08-23 13:52:46 -07:00
clocksource RISC-V Updates for the 4.19 Merge Window 2018-08-19 09:56:38 -07:00
connector
cpufreq ARM: SoC driver updates 2018-08-23 13:52:46 -07:00
cpuidle More power management updates for 4.19-rc1 2018-08-22 07:42:36 -07:00
crypto Merge branch 'akpm' (patches from Andrew) 2018-08-23 19:20:12 -07:00
dax libnvdimm-for-4.19_dax-memory-failure 2018-08-25 18:43:59 -07:00
dca
devfreq Char/Misc driver patches for 4.19-rc1 2018-08-18 11:04:51 -07:00
dio
dma Merge branch 'ida-4.19' of git://git.infradead.org/users/willy/linux-dax 2018-08-26 11:48:42 -07:00
dma-buf
edac EDAC: Add missing MEM_LRDDR4 entry in edac_mem_types[] 2018-08-17 15:13:34 +02:00
eisa
extcon
firewire firewire: use 64-bit time_t based interfaces 2018-08-17 16:20:27 -07:00
firmware fbdev changes for v4.19: 2018-08-23 15:44:58 -07:00
fmc
fpga
fsi fsi: sbefifo: Bump max command length 2018-08-08 15:44:47 +10:00
gnss
gpio - New Drivers 2018-08-20 15:38:44 -07:00
gpu ALSA: hda - Enable runtime PM only for discrete GPU 2018-09-13 17:58:30 +02:00
hid Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid 2018-08-20 15:59:01 -07:00
hsi
hv
hwmon ARM: SoC driver updates 2018-08-23 13:52:46 -07:00
hwspinlock
hwtracing drivers/hwtracing/intel_th/msu.c: change return type to vm_fault_t 2018-08-23 18:48:43 -07:00
i2c i2c: don't use any __deprecated handling anymore 2018-08-24 17:26:43 +02:00
ide Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/ide 2018-08-22 07:40:33 -07:00
idle
iio treewide: convert ISO_8859-1 text comments to utf-8 2018-08-23 18:48:43 -07:00
infiniband Second merge window update 2018-08-23 15:34:48 -07:00
input ARM: 32-bit SoC platform updates 2018-08-23 13:44:43 -07:00
iommu ARM: SoC: late updates 2018-08-25 14:12:36 -07:00
ipack
irqchip Merge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-08-26 09:55:28 -07:00
isdn isdn: Disable IIOCDBGVAR 2018-08-16 12:26:24 -07:00
leds
lightnvm
macintosh macintosh: therm_windtunnel: drop using attach_adapter 2018-08-24 14:42:42 +02:00
mailbox mailbox: Add support for i.MX messaging unit 2018-08-15 09:53:07 +05:30
mcb
md libnvdimm-for-4.19_misc 2018-08-25 18:13:10 -07:00
media Merge branch 'ida-4.19' of git://git.infradead.org/users/willy/linux-dax 2018-08-26 11:48:42 -07:00
memory ARM: SoC driver updates 2018-08-23 13:52:46 -07:00
memstick
message
mfd Merge branch 'i2c/for-4.19' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux 2018-08-21 17:40:46 -07:00
misc Merge branch 'ida-4.19' of git://git.infradead.org/users/willy/linux-dax 2018-08-26 11:48:42 -07:00
mmc Merge branch 'asoc-4.19' into asoc-next 2018-08-09 14:47:05 +01:00
mtd This pull request contains updates for both UBI and UBIFS: 2018-08-23 15:58:04 -07:00
mux
net ARM: 32-bit SoC platform updates 2018-08-23 13:44:43 -07:00
nfc
ntb
nubus
nvdimm libnvdimm-for-4.19_dax-memory-failure 2018-08-25 18:43:59 -07:00
nvme Merge branch 'linus/master' into rdma.git for-next 2018-08-16 14:21:29 -06:00
nvmem
of Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2018-08-15 15:04:25 -07:00
opp
oprofile
parisc
parport Char/Misc driver patches for 4.19-rc1 2018-08-18 11:04:51 -07:00
pci Merge branch 'akpm' (patches from Andrew) 2018-08-22 12:34:08 -07:00
pcmcia pcmcia: remove long deprecated pcmcia_request_exclusive_irq() function 2018-08-18 12:30:42 -07:00
perf Char/Misc driver patches for 4.19-rc1 2018-08-18 11:04:51 -07:00
phy
pinctrl - New Drivers 2018-08-20 15:38:44 -07:00
platform platform-drivers-x86 for v4.19-1 2018-08-22 14:14:15 -07:00
pnp
power treewide: convert ISO_8859-1 text comments to utf-8 2018-08-23 18:48:43 -07:00
powercap
pps
ps3
ptp Char/Misc driver patches for 4.19-rc1 2018-08-18 11:04:51 -07:00
pwm pwm: mediatek: Add MT7628 support 2018-08-20 11:36:07 +02:00
rapidio drivers/rapidio/devices/rio_mport_cdev.c: remove redundant pointer md 2018-08-22 10:52:51 -07:00
ras
regulator - New Drivers 2018-08-20 15:38:44 -07:00
remoteproc remoteproc/davinci: use the reset framework 2018-08-16 17:39:55 -07:00
reset ARM: SoC: late updates 2018-08-25 14:12:36 -07:00
rpmsg
rtc RTC for 4.19 2018-08-20 16:30:27 -07:00
s390 libnvdimm-for-4.19_misc 2018-08-25 18:13:10 -07:00
sbus
scsi Merge branch 'ida-4.19' of git://git.infradead.org/users/willy/linux-dax 2018-08-26 11:48:42 -07:00
sfi
sh
siox
slimbus
sn
soc ARM: Device-tree updates 2018-08-23 14:02:22 -07:00
soundwire
spi hwspinlock updates for v4.19 2018-08-18 16:45:27 -07:00
spmi
ssb ssb: Remove SSB_WARN_ON, SSB_BUG_ON and SSB_DEBUG 2018-08-09 18:47:47 +03:00
staging ARM: SoC driver updates 2018-08-23 13:52:46 -07:00
target Merge branch 'ida-4.19' of git://git.infradead.org/users/willy/linux-dax 2018-08-26 11:48:42 -07:00
tc
tee ARM: SoC driver updates 2018-08-23 13:52:46 -07:00
thermal Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux 2018-08-24 13:03:51 -07:00
thunderbolt
tty powerpc fixes for 4.19 #2 2018-08-24 09:34:23 -07:00
uio Char/Misc fix for 4.19-rc1 2018-08-19 09:30:44 -07:00
usb ARM: SoC driver updates 2018-08-23 13:52:46 -07:00
uwb
vfio powerpc updates for 4.19 2018-08-17 11:32:50 -07:00
vhost virtio, vhost: fixes, tweaks 2018-08-24 08:45:19 -07:00
video fbdev changes for v4.19: 2018-08-23 15:44:58 -07:00
virt
virtio virtio, vhost: fixes, tweaks 2018-08-24 08:45:19 -07:00
visorbus
vlynq
vme
w1 power supply and reset changes for the v4.19 series 2018-08-21 18:06:27 -07:00
watchdog include/linux/compiler*.h: make compiler-*.h mutually exclusive 2018-08-22 17:31:34 -07:00
xen xen: fixes and cleanups for 4.19-rc1, second round 2018-08-23 14:52:23 -07:00
zorro
Kconfig
Makefile Char/Misc driver patches for 4.19-rc1 2018-08-18 11:04:51 -07:00