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Bartosz Golaszewski 38d98a822c gpio: xgene-sb: use new generic GPIO chip API 
Convert the driver to using the new generic GPIO chip interfaces from
linux/gpio/generic.h.

Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250826-gpio-mmio-gpio-conv-part2-v1-1-f67603e4b27e@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
 2025-09-03 09:37:46 +02:00
Prathamesh Shete db12ee0872 gpio: tegra186: Add support for Tegra256 
Extend the existing Tegra186 GPIO controller driver with support for the
GPIO controller found on Tegra256. While the programming model remains
the same, the number of pins has slightly changed.

Signed-off-by: Prathamesh Shete <pshete@nvidia.com>
Link: https://lore.kernel.org/r/20250823055420.24664-2-pshete@nvidia.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
 2025-09-01 10:20:42 +02:00
Prathamesh Shete eef6dcbc52 dt-bindings: gpio: Add Tegra256 support 
Extend the existing Tegra186 GPIO controller device tree bindings with
support for the GPIO controller found on Tegra256. The number of pins is
slightly different, but the programming model remains the same

Add a new header, include/dt-bindings/gpio/tegra256-gpio.h,
that defines port IDs as well as the TEGRA256_MAIN_GPIO() helper,
both of which are used in conjunction to create a unique specifier
for each pin. The OS can reconstruct the port ID and pin from
these values to determine the register region for the corresponding
GPIO. However, the OS does not use the macro definitions in this file.

The symbolic names help associate these GPIO specifiers with the names
used in the technical documentation available for the chip.

Signed-off-by: Prathamesh Shete <pshete@nvidia.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20250823055420.24664-1-pshete@nvidia.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
 2025-09-01 10:20:42 +02:00
Krzysztof Kozlowski 604642fc14 dt-bindings: gpio: Minor whitespace cleanup in example 
The DTS code coding style expects exactly one space around '='
character.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Acked-by: Yixun Lan <dlan@gentoo.org>
Link: https://lore.kernel.org/r/20250821083213.46642-2-krzysztof.kozlowski@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
 2025-08-26 15:46:37 +02:00
Dmitry Torokhov 8003235b10 Documentation: gpio: add documentation about using software nodes 
Introduce documentation regarding use of software nodes to describe
GPIOs on legacy boards that have not been converted to device tree.

Reviewed-by: Randy Dunlap <rdunlap@infradead.org>
Tested-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/tnaaz2qlk5jpbonfle7uy7pb54qx6ixwuczfbkwtxxwpj7hwas@y7a2rwko3k6c
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
 2025-08-26 15:27:04 +02:00
Frank Li 66edbb1e32 dt-bindings: gpio: Move fsl,mxs-pinctrl.txt into gpio-mxs.yaml 
Move mxs-pinctrl part into gpio-mxs.yaml and add pinctrl examples to fix
below CHECK_DTB warning:

arch/arm/boot/dts/nxp/mxs/imx28-xea.dtb: pinctrl@80018000 (fsl,imx28-pinctrl):
   'auart0-2pins@0', 'auart0@0',  ... 'usb1@1' do not match any of the regexes: 'gpio@[0-9]+$', 'pinctrl-[0-9]+'

Signed-off-by: Frank Li <Frank.Li@nxp.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://lore.kernel.org/r/20250820164946.3782702-1-Frank.Li@nxp.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
 2025-08-26 11:58:29 +02:00
Bartosz Golaszewski a16a3cb071 gpio: sim: don't use GPIO base in debugfs output 
We're in the process of removing unneeded references to the global GPIO
base number treewide. Use the HW offset instead of the base number.

Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250815111733.79283-1-brgl@bgdev.pl
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
 2025-08-25 20:55:45 +02:00
Linus Walleij 38623d532c gpio: mmio: Add compatible for the ixp4xx eb MMIO 
The IXP4xx expansion bus can have simple memory-mapped GPIO
on it. Using the proper device tree bindings, support probing
this directly from the device tree.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250822-ixp4xx-eb-mmio-gpio-v2-3-bd2edd4a9c74@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
 2025-08-25 20:49:58 +02:00
Linus Walleij 1f3c076063 dt-bindings: gpio-mmio: Add MMIO for IXP4xx expansion bus 
This expansion is a simple MMIO-mapped GPIO device but the bus has a
number of additional properties that we need to bring in using
a reference to the bus child node schema.

Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250822-ixp4xx-eb-mmio-gpio-v2-2-bd2edd4a9c74@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
 2025-08-25 20:49:58 +02:00
Linus Walleij 545908a9fb dt-bindings: gpio-mmio: Support hogs 
We use hogs on some MMIO GPIO controllers so make sure the
bindings support this using a pattern property.

Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250822-ixp4xx-eb-mmio-gpio-v2-1-bd2edd4a9c74@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
 2025-08-25 20:49:58 +02:00
Bartosz Golaszewski 56f548840e gpio: ge: use new generic GPIO chip API 
Convert the driver to using the new generic GPIO chip interfaces from
linux/gpio/generic.h.

Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250825-gpio-mmio-gpio-conv-v1-14-356b4b1d5110@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
 2025-08-25 12:05:38 +02:00
Bartosz Golaszewski 90ab705035 gpio: mpc8xxx: use new generic GPIO chip API 
Convert the driver to using the new generic GPIO chip interfaces from
linux/gpio/generic.h.

Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250825-gpio-mmio-gpio-conv-v1-13-356b4b1d5110@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
 2025-08-25 12:05:38 +02:00
Bartosz Golaszewski 67e4be48f4 gpio: grgpio: use new generic GPIO chip API 
Convert the driver to using the new generic GPIO chip interfaces from
linux/gpio/generic.h.

Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250825-gpio-mmio-gpio-conv-v1-12-356b4b1d5110@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
 2025-08-25 12:05:38 +02:00
Bartosz Golaszewski ebd63ab0f2 gpio: rda: use new generic GPIO chip API 
Convert the driver to using the new generic GPIO chip interfaces from
linux/gpio/generic.h.

Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250825-gpio-mmio-gpio-conv-v1-11-356b4b1d5110@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
 2025-08-25 12:05:38 +02:00
Bartosz Golaszewski 728e0ca4e1 gpio: amdpt: use new generic GPIO chip API 
Convert the driver to using the new generic GPIO chip interfaces from
linux/gpio/generic.h.

Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250825-gpio-mmio-gpio-conv-v1-10-356b4b1d5110@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
 2025-08-25 12:05:38 +02:00
Bartosz Golaszewski 84bebb7e7e gpio: dwapb: use new generic GPIO chip API 
Convert the driver to using the new generic GPIO chip interfaces from
linux/gpio/generic.h.

Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250825-gpio-mmio-gpio-conv-v1-9-356b4b1d5110@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
 2025-08-25 12:05:38 +02:00
Bartosz Golaszewski 4ba2193ce0 gpio: loongson-64bit: use new generic GPIO chip API 
Convert the driver to using the new generic GPIO chip interfaces from
linux/gpio/generic.h.

Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250825-gpio-mmio-gpio-conv-v1-8-356b4b1d5110@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
 2025-08-25 12:05:38 +02:00
Bartosz Golaszewski 9215a4fb59 gpio: ts4800: use new generic GPIO chip API 
Convert the driver to using the new generic GPIO chip interfaces from
linux/gpio/generic.h.

Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250825-gpio-mmio-gpio-conv-v1-7-356b4b1d5110@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
 2025-08-25 12:05:38 +02:00
Bartosz Golaszewski ac1eca3ab9 gpio: ts4800: use dev_err_probe() 
Use dev_err_probe() where applicable.

Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250825-gpio-mmio-gpio-conv-v1-6-356b4b1d5110@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
 2025-08-25 12:05:38 +02:00
Bartosz Golaszewski 8a8e9a1a92 gpio: ts4800: use generic device properties 
Avoid pulling in linux/of.h by using the generic device properties.

Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250825-gpio-mmio-gpio-conv-v1-5-356b4b1d5110@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
 2025-08-25 12:05:38 +02:00
Bartosz Golaszewski d6307707d5 gpio: ts4800: remove the unnecessary call to platform_set_drvdata() 
There's no corresponding call to platform_get_drvdata() or
dev_get_drvdata(). Remove the call to platform_set_drvdata() from
.probe().

Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250825-gpio-mmio-gpio-conv-v1-4-356b4b1d5110@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
 2025-08-25 12:05:38 +02:00
Bartosz Golaszewski 13ba232ed8 gpio: hisi: use the BGPIOF_UNREADABLE_REG_DIR flag 
There's no reason for this driver to touch the gpio-mmio internals, we
have a dedicated flag passed to bgpio_init() indicating to the module
that the DIR register is unreadable.

Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250825-gpio-mmio-gpio-conv-v1-3-356b4b1d5110@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
 2025-08-25 12:05:37 +02:00
Bartosz Golaszewski 16397871b6 gpio: generic: provide helpers for reading and writing registers 
Provide helpers wrapping the read_reg() and write_reg() callbacks of the
generic GPIO API that are called directly by many users. This is done to
hide their implementation ahead of moving them into the separate generic
GPIO struct.

Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250825-gpio-mmio-gpio-conv-v1-2-356b4b1d5110@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
 2025-08-25 12:05:37 +02:00
Bartosz Golaszewski 6e376f245f gpio: generic: provide to_gpio_generic_chip() 
Provide a helper allowing to convert a struct gpio_chip address to the
struct gpio_generic_chip that wraps it.

Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250825-gpio-mmio-gpio-conv-v1-1-356b4b1d5110@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
 2025-08-25 12:05:37 +02:00
Bartosz Golaszewski c48156d111 Merge branch 'ib-gpio_generic_chip_init' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl into gpio/for-next 
Convert GPIO drivers under drivers/pinctrl/ to using the new generic GPIO
chip API.
 2025-08-25 11:42:44 +02:00