android_kernel_motorola_sm6375/Documentation
Repository files (latest commit first)
Filename Latest commit message Latest commit date
Thomas Hebb f5462668ad ALSA: hda/realtek - Remove now-unnecessary XPS 13 headphone noise fixups
commit f36938aa7440f46a0a365f1cfde5f5985af2bef3 upstream.

patch_realtek.c has historically failed to properly configure the PC
Beep Hidden Register for the ALC256 codec (among others). Depending on
your kernel version, symptoms of this misconfiguration can range from
chassis noise, picked up by a poorly-shielded PCBEEP trace, getting
amplified and played on your internal speaker and/or headphones to loud
feedback, which responds to the "Headphone Mic Boost" ALSA control,
getting played through your headphones. For details of the problem, see
the patch in this series titled "ALSA: hda/realtek - Set principled PC
Beep configuration for ALC256", which fixes the configuration.

These symptoms have been most noticed on the Dell XPS 13 9350 and 9360,
popular laptops that use the ALC256. As a result, several model-specific
fixups have been introduced to try and fix the problem, the most
egregious of which locks the "Headphone Mic Boost" control as a hack to
minimize noise from a feedback loop that shouldn't have been there in
the first place.

Now that the underlying issue has been fixed, remove all these fixups.
Remaining fixups needed by the XPS 13 are all picked up by existing pin
quirks.

This change should, for the XPS 13 9350/9360

 - Significantly increase volume and audio quality on headphones
 - Eliminate headphone popping on suspend/resume
 - Allow "Headphone Mic Boost" to be set again, making the headphone
   jack fully usable as a microphone jack too.

Fixes: 8c69729b44 ("ALSA: hda - Fix headphone noise after Dell XPS 13 resume back from S3")
Fixes: 423cd78561 ("ALSA: hda - Fix headphone noise on Dell XPS 13 9360")
Fixes: e4c9fd10eb ("ALSA: hda - Apply headphone noise quirk for another Dell XPS 13 variant")
Fixes: 1099f48457 ("ALSA: hda/realtek: Reduce the Headphone static noise on XPS 9350/9360")
Cc: stable@vger.kernel.org
Signed-off-by: Thomas Hebb <tommyhebb@gmail.com>
Link: https://lore.kernel.org/r/b649a00edfde150cf6eebbb4390e15e0c2deb39a.1585584498.git.tommyhebb@gmail.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-04-17 10:50:08 +02:00
..
ABI PM / devfreq: Add new name attribute for sysfs 2020-02-05 21:22:40 +00:00
accounting
admin-guide ACPI: watchdog: Allow disabling WDAT at boot 2020-03-21 08:11:47 +01:00
arm
arm64 mm: Avoid creating virtual address aliases in brk()/mmap()/mremap() 2020-02-28 17:22:21 +01:00
block
bpf
cdrom
core-api Modules fixes for v5.4-rc3 2019-10-11 10:19:24 -07:00
cpu-freq
crypto Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2019-09-18 12:11:14 -07:00
dev-tools mm, page_owner: decouple freeing stack trace from debug_pagealloc 2019-10-14 15:04:00 -07:00
devicetree dt-bindings: net: FMan erratum A050385 2020-04-01 11:01:52 +02:00
doc-guide
driver-api This is the bulk of pin control changes for the v5.4 kernel 2019-09-19 14:19:33 -07:00
EDID
fault-injection
fb fbdev: fix numbering of fbcon options 2020-02-24 08:36:42 +01:00
features It's a somewhat calmer cycle for docs this time, as the churn of the mass 2019-09-17 16:22:26 -07:00
filesystems cifs_atomic_open(): fix double-put on late allocation failure 2020-03-18 07:17:51 +01:00
firmware-guide
firmware_class
fpga
gpu
hid
hwmon hwmon: docs: Extend inspur-ipsps1 title underline 2019-10-07 05:56:57 -07:00
i2c
ia64
ide
iio
infiniband
input
ioctl
isdn
kbuild modpost: move the namespace field in Module.symvers last 2020-03-25 08:25:55 +01:00
kernel-hacking
leds
livepatch
locking
m68k
maintainer
media drm main pull for 5.4-rc1 2019-09-19 16:24:24 -07:00
mic
mips Main MIPS changes for v5.4: 2019-09-22 09:30:30 -07:00
misc-devices
netlabel
networking netfilter: nf_flowtable: fix documentation 2020-03-05 16:43:51 +01:00
nios2
openrisc
parisc
PCI
pcmcia
power Merge branches 'pm-opp', 'pm-qos', 'acpi-pm', 'pm-domains' and 'pm-tools' 2019-09-17 09:49:19 +02:00
powerpc docs: powerpc: Add missing documentation reference 2019-09-17 23:59:34 +10:00
process Documentation/process: Add fallthrough pseudo-keyword 2019-10-11 09:26:05 -07:00
RCU
riscv It's a somewhat calmer cycle for docs this time, as the churn of the mass 2019-09-17 16:22:26 -07:00
s390
scheduler
scsi scsi: smartpqi: Update attribute name to driver_version 2020-01-17 19:48:27 +01:00
security Merge branch 'next-integrity' of git://git.kernel.org/pub/scm/linux/kernel/git/zohar/linux-integrity 2019-09-27 19:37:27 -07:00
sh
sound ALSA: hda/realtek - Remove now-unnecessary XPS 13 headphone noise fixups 2020-04-17 10:50:08 +02:00
sparc
sphinx
sphinx-static
spi
target
timers
trace Tracing updates: 2019-09-20 11:19:48 -07:00
translations
usb USB: rio500: Remove Rio 500 kernel driver 2019-10-04 10:53:36 +02:00
userspace-api
virt KVM/Hyper-V: Add new KVM capability KVM_CAP_HYPERV_DIRECT_TLBFLUSH 2019-09-24 13:37:13 +02:00
virtual
vm mm: treewide: clarify pgtable_page_{ctor,dtor}() naming 2019-09-26 10:10:44 -07:00
w1
watchdog linux-watchdog 5.4-rc1 tag 2019-09-27 11:17:38 -07:00
x86 x86/speculation/taa: Add documentation for TSX Async Abort 2019-10-28 08:37:00 +01:00
xtensa
.gitignore
atomic_bitops.txt
atomic_t.txt
bus-virt-phys-mapping.txt
Changes
CodingStyle
conf.py
COPYING-logo
crc32.txt
debugging-modules.txt
debugging-via-ohci1394.txt
digsig.txt
DMA-API-HOWTO.txt
DMA-API.txt
DMA-attributes.txt
DMA-ISA-LPC.txt
docutils.conf
dontdiff
futex-requeue-pi.txt
hwspinlock.txt
index.rst Main MIPS changes for v5.4: 2019-09-22 09:30:30 -07:00
io-mapping.txt
io_ordering.txt
IPMI.txt
IRQ-affinity.txt
IRQ-domain.txt
IRQ.txt
irqflags-tracing.txt
Kconfig
kobject.txt
kprobes.txt
kref.txt
logo.gif
lzo.txt
mailbox.txt
Makefile
memory-barriers.txt
nommu-mmap.txt
padata.txt
percpu-rw-semaphore.txt
pi-futex.txt
preempt-locking.txt
rbtree.txt
remoteproc.txt
robust-futex-ABI.txt
robust-futexes.txt
rpmsg.txt
speculation.txt
static-keys.txt
SubmittingPatches
tee.txt
this_cpu_ops.txt
unaligned-memory-access.txt
xz.txt