mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2025-01-17 18:56:24 +00:00
576db73424
Core GPIOLIB:
- protect the global list of GPIO devices with a read-write semaphore as
it is rarely modified but can be traversed by multiple readers at once
- remove GPIO devices from the global list when they are *unregistered*
and not when they are *released* (which only happens when the last
reference is dropped) as this may lead to a successful lookup of an
unregistered device
- remove the unnecessary "extra_checks" switch
- rename functions that are called with a lock taken
- remove duplicate includes
Character device handling:
- use locking guards to reduce the code size
- allocate the big linereq structure using the more suitable kvzalloc()
- redulce the size of critical sections
- improve documentation
- move the debounce_period_us field out of struct gpio_desc
New drivers:
- Nuvoton NPCM SGPIO driver for BMC NPCM7xx/NPCM8xx
- Realtek DHC (Digital Home Center) SoC GPIO driver
Driver improvements:
- replace gpiochip_is_requested() with a safer alternative in the form of
gpiochip_dup_line_label() as the former returns a pointer to a string that
can be deleted
- implement the dbg_show() callback in gpio-sim
- improve the coding style for local variables by removing unnecessary tabs
- use generic device properties instead of OF variants in gpio-mmio
- use the preferred coding style for __free() in gpio-mockup
- reuse PM ops from the gpio-tangier in gpio-elkhartlake
- rework PM and use cleanup helpers in gpio-tangier
- fix the EIC configuration in gpio-pmic-eic-sprd
- remove the unneeded call to platform_set_drvdata() in gpio-sifive
- use generic GPIO helpers for driver callbacks in gpio-dwapb
- add clock support on certain pins of gpio-ixp4xx
- don't use the core-specific DEBUG_GPIO switch in drivers
- kerneldoc improvements
DT bindings:
- add bindings for the new Realtek and Nuvoton devices
- allow gpio-ranges in gpio-dwapb
- support GPIO hogs in gpio-rockchip
- describe the label property in gpio-zynqmp-modepin
Other:
- header cleanups
- forward declarations cleanups
-----BEGIN PGP SIGNATURE-----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=bcXn
-----END PGP SIGNATURE-----
Merge tag 'gpio-updates-for-v6.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux
Pull gpio updates from Bartosz Golaszewski:
"We have two new drivers, an assortment of updates and cleanups to many
others, and first part of the big rework of the core GPIOLIB that's
currently underway.
Add to that some code shrink in the character device module and
updates to DT bindings and that's pretty much it.
Core GPIOLIB:
- protect the global list of GPIO devices with a read-write semaphore
as it is rarely modified but can be traversed by multiple readers
at once
- remove GPIO devices from the global list when they are
*unregistered* and not when they are *released* (which only happens
when the last reference is dropped) as this may lead to a
successful lookup of an unregistered device
- remove the unnecessary "extra_checks" switch
- rename functions that are called with a lock taken
- remove duplicate includes
Character device handling:
- use locking guards to reduce the code size
- allocate the big linereq structure using the more suitable
kvzalloc()
- redulce the size of critical sections
- improve documentation
- move the debounce_period_us field out of struct gpio_desc
New drivers:
- Nuvoton NPCM SGPIO driver for BMC NPCM7xx/NPCM8xx
- Realtek DHC (Digital Home Center) SoC GPIO driver
Driver improvements:
- replace gpiochip_is_requested() with a safer alternative in the
form of gpiochip_dup_line_label() as the former returns a pointer
to a string that can be deleted
- implement the dbg_show() callback in gpio-sim
- improve the coding style for local variables by removing
unnecessary tabs
- use generic device properties instead of OF variants in gpio-mmio
- use the preferred coding style for __free() in gpio-mockup
- reuse PM ops from the gpio-tangier in gpio-elkhartlake
- rework PM and use cleanup helpers in gpio-tangier
- fix the EIC configuration in gpio-pmic-eic-sprd
- remove the unneeded call to platform_set_drvdata() in gpio-sifive
- use generic GPIO helpers for driver callbacks in gpio-dwapb
- add clock support on certain pins of gpio-ixp4xx
- don't use the core-specific DEBUG_GPIO switch in drivers
- kerneldoc improvements
DT bindings:
- add bindings for the new Realtek and Nuvoton devices
- allow gpio-ranges in gpio-dwapb
- support GPIO hogs in gpio-rockchip
- describe the label property in gpio-zynqmp-modepin
Other:
- header cleanups
- forward declarations cleanups"
* tag 'gpio-updates-for-v6.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux: (55 commits)
gpiolib: replace the GPIO device mutex with a read-write semaphore
gpiolib: remove the GPIO device from the list when it's unregistered
gpio: nuvoton: Add Nuvoton NPCM sgpio driver
dt-bindings: gpio: add NPCM sgpio driver bindings
gpio: rtd: Add support for Realtek DHC(Digital Home Center) RTD SoCs
dt-bindings: gpio: realtek: Add realtek,rtd-gpio
gpio: pmic-eic-sprd: Configure the bit corresponding to the EIC through offset
gpio: dwapb: Use generic request, free and set_config
gpio: sysfs: drop tabs from local variable declarations
gpiolib: drop tabs from local variable declarations
gpiolib: remove extra_checks
gpio: tps65219: don't use CONFIG_DEBUG_GPIO
gpiolib: cdev: replace locking wrappers for gpio_device with guards
gpiolib: cdev: replace locking wrappers for config_mutex with guards
gpiolib: cdev: allocate linereq using kvzalloc()
gpiolib: cdev: include overflow.h
gpiolib: cdev: reduce locking in gpio_desc_to_lineinfo()
gpiolib: cdev: improve documentation of get/set values
gpiolib: cdev: fully adopt guard() and scoped_guard()
gpiolib: remove debounce_period_us from struct gpio_desc
...
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.