struct gpio_chip now has callbacks for setting line values that return
an integer, allowing to indicate failures. Convert the driver to using
them.
Reviewed-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20250709-gpiochip-set-rv-gpio-remaining-v1-6-b8950f69618d@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
struct gpio_chip now has callbacks for setting line values that return
an integer, allowing to indicate failures. Convert the driver to using
them.
Acked-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Link: https://lore.kernel.org/r/20250707-gpiochip-set-rv-gpio-round4-v1-10-35668aaaf6d2@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
struct gpio_chip now has callbacks for setting line values that return
an integer, allowing to indicate failures. Convert the driver to using
them.
Acked-by: Matthias Schiffer <matthias.schiffer@ew.tq-group.com>
Link: https://lore.kernel.org/r/20250707-gpiochip-set-rv-gpio-round4-v1-5-35668aaaf6d2@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
One of the users of global GPIO numbers in the kernel are the debugfs
callbacks in GPIO drivers. Before converting any custom .dbg_show()
callbacks in individual modules, let's first make GPIO core stop using
GPIO base in debugfs output. Use hardware offsets instead.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250707141313.73169-1-brgl@bgdev.pl
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Convert the Renesas R-Car GPIO driver from SIMPLE_DEV_PM_OPS() to
DEFINE_SIMPLE_DEV_PM_OPS() and pm_sleep_ptr(). This lets us drop the
check for CONFIG_PM_SLEEP, and reduces kernel size in case CONFIG_PM or
CONFIG_PM_SLEEP is disabled, while increasing build coverage.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Link: https://lore.kernel.org/r/e201140426daacaa799d73e2f76bfd96b6f5718f.1752086619.git.geert+renesas@glider.be
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Add a new line-level, boolean property to the gpio-sim configfs
interface called 'valid'. It's set by default and the user can unset it
to make the line be included in the standard `gpio-reserved-ranges`
property when the chip is registered with GPIO core. This allows users
to specify which lines should not be available for requesting as GPIOs.
Link: https://lore.kernel.org/r/20250630130358.40352-1-brgl@bgdev.pl
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
The TI TCA6418 is a 18-channel I2C I/O expander. It is slightly
different to other models from the same family, such as TCA6416,
but has enough in common with them to make it work with just a
few tweaks, which are explained in the code's documentation.
Signed-off-by: Maria Garcia <mariagarcia7293@gmail.com>
Link: https://lore.kernel.org/r/20250703205740.45385-3-mariagarcia7293@gmail.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
pm_runtime_put_autosuspend(), pm_runtime_put_sync_autosuspend(),
pm_runtime_autosuspend() and pm_request_autosuspend() now include a call
to pm_runtime_mark_last_busy(). Remove the now-reduntant explicit call to
pm_runtime_mark_last_busy().
Reviewed-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Link: https://lore.kernel.org/r/20250704075408.3217690-1-sakari.ailus@linux.intel.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Make several autosuspend functions mark last busy stamp and update
the documentation accordingly (Sakari Ailus).
-----BEGIN PGP SIGNATURE-----
iQFGBAABCAAwFiEEcM8Aw/RY0dgsiRUR7l+9nS/U47UFAmhjrvQSHHJqd0Byand5
c29ja2kubmV0AAoJEO5fvZ0v1OO1aigIAKypscFSfd/WsAlP4orLtd4xiLi7KQHa
NrOYv7sZBVHgx4S9BGqHavYM3qhOBH5qCg+yBtqb8v6vp/TIlJjF2v3+C8uAXAnl
9GI5Gc6sZp/lMhf5Vb4Ibf58/P9lg4A7mIvM+LtfeEUMTlRrp47Q/RQ0ah7S4tDj
rFyC92QmBnkDLoyQp5IbCWkdjlqGgyTZzz/+XnfV9fWwX1aiXqaB4EZ2nXSAlyBx
awvA4/t662SWlHsdQqll9vS/+ZB39LEWwa1jJ7XGIK8t6GSH+TTys3S9/PHR/ua3
Dlcd+14plDGlSOy97hY+z6NdSgxH/qcpRgFduu5KwVqEwo2fqNkeV9Q=
=pFYw
-----END PGP SIGNATURE-----
Merge tag 'pm-runtime-6.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm into gpio/for-next
Runtime PM updates related to autosuspend for 6.17
Make several autosuspend functions mark last busy stamp and update
the documentation accordingly (Sakari Ailus).
Simplify the code by using lock guards for the bgpio_lock. While at it:
move the gpio/driver.h include into its correct place alphabetically.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250702-gpio-mmio-rework-v2-5-6b77aab684d8@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
As the first step in removing the fields specific to the gpio-mmio
module from struct gpio_chip, we introduce a new set of generic GPIO
chip interfaces that are meant to replace the existing bgpio_ ones.
The new initialization function - gpio_generic_chip_init() - takes a
configuration structure as argument instead of 9 separate parameters.
This will allow easy extension if needed in the future. We hide the
locking details behind a set of helpers in order to be able to move the
raw spinlock out of struct gpio_chip without the users noticing.
For now, the new APIs just wrap the existing ones. Once all users have
been converted to the new interfaces, we'll pull them into gpio-mmio and
implement them in a backward-compatible way while also moving all fields
specific to the generic GPIO chip into struct gpio_generic_chip.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250702-gpio-mmio-rework-v2-1-6b77aab684d8@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Remove struct bgpio_pdata after converting its users to generic device
properties.
-----BEGIN PGP SIGNATURE-----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=k0Ui
-----END PGP SIGNATURE-----
Merge tag 'gpio-mmio-remove-bgpio-pdata-for-v6.17-rc1' into gpio/for-next
Immutable branch between GPIO, MFD and ARM-SoC for v6.17-rc1
Remove struct bgpio_pdata after converting its users to generic device
properties.
With no more users, we can now remove struct bgpio_pdata. Move the
relevant bits from bgpio_parse_fw() into bgpio_pdev_probe() while
maintaining the logical ordering (get flags before calling
bgpio_init()).
Link: https://lore.kernel.org/r/20250701-gpio-mmio-pdata-v2-6-ebf34d273497@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
The GPIO device in crag6410 is registered with struct bgpio_pdata passed
as platform_data to the gpio-mmio driver. We want to remove the
bgpio_pdata from the kernel and the gpio-mmio driver is now also able to
get the relevant values from the software node. Set up device properties
and switch to using platform_device_info to register the device as
platform_add_devices() doesn't allow us to pass device properties to the
driver model.
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20250701-gpio-mmio-pdata-v2-5-ebf34d273497@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
The two latch GPIO devices in ams-delta are registered with struct
bgpio_pdata passed as platform_data to the gpio-mmio driver. We want to
remove the bgpio_pdata from the kernel and the gpio-mmio driver is now
also able to get the relevant values from the software node. Set up
device properties and switch to using platform_device_info to register
the devices as platform_add_devices() doesn't allow us to pass device
properties to the driver model.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Janusz Krzysztofik <jmkrzyszt@gmail.com>
Link: https://lore.kernel.org/r/20250701-gpio-mmio-pdata-v2-4-ebf34d273497@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Replace struct bgpio_pdata - that we plan to remove - with software
nodes containing properties encoding the same values thatr can now be
parsed by gpio-mmio.
Acked-by: Lee Jones <lee@kernel.org>
Reviewed-by: Liviu Dudau <liviu.dudau@arm.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250701-gpio-mmio-pdata-v2-3-ebf34d273497@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Ahead of removing struct bgpio_pdata support from the gpio-mmio generic
module, let's add support for getting the relevant values from generic
device properties. "label" is a semi-standardized property in some GPIO
drivers so let's go with it. There's no standard "base" property, so
let's use the name "gpio-mmio,base" to tie it to this driver
specifically. The number of GPIOs will be retrieved using
gpiochip_get_ngpios() so there's no need to look it up in the software
node.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250701-gpio-mmio-pdata-v2-2-ebf34d273497@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
