twx-linux/drivers
Richard Fitzgerald 70ee853eec
regmap: Add regmap_read_bypassed()
Add a regmap_read_bypassed() to allow reads from the hardware registers
while the regmap is in cache-only mode.

A typical use for this is to keep the cache in cache-only mode until
the hardware has reached a valid state, but one or more status registers
must be polled to determine when this state is reached.

For example, firmware download on the cs35l56 can take several seconds if
there are multiple amps sharing limited bus bandwidth. This is too long
to block in probe() so it is done as a background task. The device must
be soft-reset to reboot the firmware and during this time the registers are
not accessible, so the cache should be in cache-only. But the driver must
poll a register to detect when reboot has completed.

Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Fixes: 8a731fd37f8b ("ASoC: cs35l56: Move utility functions to shared file")
Link: https://msgid.link/r/20240408101803.43183-2-rf@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2024-04-08 14:09:58 +01:00
..
accel
accessibility Char/Misc and other driver subsystem updates for 6.9-rc1 2024-03-21 13:21:31 -07:00
acpi ACPI: thermal: Register thermal zones without valid trip points 2024-04-02 21:38:45 +02:00
amba
android Char/Misc and other driver subsystem updates for 6.9-rc1 2024-03-21 13:21:31 -07:00
ata ata: sata_gemini: Check clk_enable() result 2024-04-04 12:42:00 +09:00
atm
auxdisplay
base regmap: Add regmap_read_bypassed() 2024-04-08 14:09:58 +01:00
bcma
block nullblk: Fix cleanup order in null_add_dev() error path 2024-04-02 07:43:24 -06:00
bluetooth Bluetooth: qca: fix device-address endianness 2024-03-29 09:48:37 -04:00
bus Char/Misc and other driver subsystem updates for 6.9-rc1 2024-03-21 13:21:31 -07:00
cache
cdrom
cdx
char Char/Misc and other driver subsystem updates for 6.9-rc1 2024-03-21 13:21:31 -07:00
clk
clocksource A set of updates for clocksource and clockevent drivers: 2024-03-23 14:42:45 -07:00
comedi Char/Misc and other driver subsystem updates for 6.9-rc1 2024-03-21 13:21:31 -07:00
connector
counter
cpufreq RISC-V Patches for the 6.9 Merge Window 2024-03-22 10:41:13 -07:00
cpuidle RISC-V Patches for the 6.9 Merge Window 2024-03-22 10:41:13 -07:00
crypto x86/CPU/AMD: Track SNP host status with cc_platform_*() 2024-04-04 10:40:30 +02:00
cxl cxl: remove CONFIG_CXL_PMU entry in drivers/cxl/Kconfig 2024-03-27 01:58:34 +09:00
dax
dca
devfreq
dio
dma
dma-buf Merge drm/drm-fixes into drm-misc-fixes 2024-03-25 21:11:58 +01:00
dpll dpll: indent DPLL option type by a tab 2024-03-25 19:40:23 -07:00
edac
eisa
extcon
firewire firewire: ohci: mask bus reset interrupts between ISR and bottom half 2024-04-06 09:36:46 +09:00
firmware x86/efistub: Reinstate soft limit for initrd loading 2024-03-28 16:19:46 +01:00
fpga Char/Misc and other driver subsystem updates for 6.9-rc1 2024-03-21 13:21:31 -07:00
fsi
gnss
gpio gpio: cdev: fix missed label sanitizing in debounce_setup() 2024-04-04 18:57:08 +02:00
gpu Display fixes: 2024-04-05 12:32:14 +10:00
greybus Char/Misc and other driver subsystem updates for 6.9-rc1 2024-03-21 13:21:31 -07:00
hid
hsi
hte
hv
hwmon
hwspinlock
hwtracing
i2c i2c: pxa: hide unused icr_bits[] variable 2024-04-04 01:07:57 +02:00
i3c
idle
iio Char/Misc and other driver subsystem updates for 6.9-rc1 2024-03-21 13:21:31 -07:00
infiniband
input TTY/Serial driver update for 6.9-rc1 2024-03-21 12:44:10 -07:00
interconnect
iommu x86/CPU/AMD: Track SNP host status with cc_platform_*() 2024-04-04 10:40:30 +02:00
ipack
irqchip irqchip/armada-370-xp: Suppress unused-function warning 2024-03-26 02:12:16 +01:00
isdn
leds
macintosh
mailbox
mcb
md dm integrity: fix out-of-range warning 2024-03-29 09:48:07 -04:00
media
memory Char/Misc and other driver subsystem updates for 6.9-rc1 2024-03-21 13:21:31 -07:00
memstick
message
mfd TTY/Serial driver update for 6.9-rc1 2024-03-21 12:44:10 -07:00
misc hardening fixes for v6.9-rc1 2024-03-23 08:43:21 -07:00
mmc sdhci-of-dwcmshc: disable PM runtime in dwcmshc_remove() 2024-03-25 13:12:46 +01:00
most
mtd fs,block: yield devices early 2024-03-27 13:17:15 +01:00
mux
net Including fixes from netfilter, bluetooth and bpf. 2024-04-04 14:49:10 -07:00
nfc
ntb
nubus
nvdimm
nvme nvme-fc: rename free_ctrl callback to match name pattern 2024-04-04 08:47:56 -07:00
nvmem
of of: module: prevent NULL pointer dereference in vsnprintf() 2024-03-27 17:05:07 -05:00
opp
parisc
parport
pci
pcmcia
peci
perf drivers/perf: riscv: Disable PERF_SAMPLE_BRANCH_* while not supported 2024-03-26 14:09:18 -07:00
phy USB/Thunderbolt changes for 6.9-rc1 2024-03-21 12:35:20 -07:00
pinctrl Kbuild fixes for v6.9 2024-03-31 11:23:51 -07:00
platform Char/Misc and other driver subsystem updates for 6.9-rc1 2024-03-21 13:21:31 -07:00
pmdomain
pnp
power
powercap
pps
ps3
ptp
pwm pwm: Fix setting period with #pwm-cells = <1> and of_pwm_single_xlate() 2024-03-29 13:50:10 +01:00
rapidio
ras RAS: Avoid build errors when CONFIG_DEBUG_FS=n 2024-03-26 21:48:21 +01:00
regulator regulator: tps65132: Add of_match table 2024-03-25 19:28:27 +00:00
remoteproc
reset
rpmsg
rtc RTC for 6.9 2024-03-21 17:16:46 -07:00
s390 s390/qeth: handle deferred cc1 2024-03-25 19:46:49 -07:00
sbus
scsi scsi: libsas: Align SMP request allocation to ARCH_DMA_MINALIGN 2024-04-01 21:34:23 -04:00
sh
siox SIOX changes for 6.9-rc1 2024-03-21 15:18:18 -07:00
slimbus
soc Including fixes from CAN, netfilter, wireguard and IPsec. 2024-03-21 14:50:39 -07:00
soundwire
spi spi: mchp-pci1xxx: Fix a possible null pointer dereference in pci1xxx_spi_probe 2024-04-03 11:04:58 +01:00
spmi
ssb
staging staging: vc04_services: fix information leak in create_component() 2024-03-25 19:10:01 +01:00
target Merge branch '6.9/scsi-queue' into 6.9/scsi-fixes 2024-03-25 14:03:35 -04:00
tc
tee
thermal thermal: gov_power_allocator: Allow binding without trip points 2024-04-03 16:32:15 +02:00
thunderbolt USB/Thunderbolt changes for 6.9-rc1 2024-03-21 12:35:20 -07:00
tty TTY/Serial driver update for 6.9-rc1 2024-03-21 12:44:10 -07:00
ufs scsi: ufs: core: Fix MCQ mode dev command timeout 2024-04-01 21:43:46 -04:00
uio Fix build errors due to new UIO_MEM_DMA_COHERENT mess 2024-03-27 09:48:47 -07:00
usb USB: core: Fix deadlock in port "disable" sysfs attribute 2024-03-26 15:02:28 +01:00
vdpa
vfio
vhost
video fbdev: Select I/O-memory framebuffer ops for SBus 2024-03-25 21:34:08 +01:00
virt
virtio
w1
watchdog
xen
zorro
Kconfig
Makefile