linux-stable.git/drivers/gpio/Makefile, branch linux-6.3.y

mfd: remove ucb1400 support

2023-02-01T16:23:38+00:00

The ucb1400 MFD driver and its gpio and touchscreen child
drivers were only used on a few PXA machines that were unused
for a while and are now removed.

Removing these leaves the AC97 support as ALSA specific,
no other drivers are now connected through this interface.

Cc: Linus Walleij 
Cc: Bartosz Golaszewski 
Cc: Dmitry Torokhov 
Cc: Lee Jones 
Cc: Jaroslav Kysela 
Cc: Takashi Iwai 
Cc: Marek Vasut 
Cc: linux-kernel@vger.kernel.org
Cc: linux-gpio@vger.kernel.org
Cc: linux-input@vger.kernel.org
Cc: alsa-devel@alsa-project.org
Acked-by: Robert Jarzmik 
Signed-off-by: Arnd Bergmann

gpio: remove iop driver

2023-01-10T22:10:27+00:00

The iop32x platform was removed, and its gpio driver is now
orphaned.

Cc: Lennert Buytenhek 
Acked-by: Linus Walleij 
Acked-by: Bartosz Golaszewski 
Signed-off-by: Arnd Bergmann

gpiolib: add support for software nodes

2022-11-15T10:21:43+00:00

Now that static device properties understand notion of child nodes and
references, let's teach gpiolib to handle them:

- GPIOs are represented as a references to software nodes representing
  gpiochip
- references must have 2 arguments - GPIO number within the chip and
  GPIO flags (GPIO_ACTIVE_LOW/GPIO_ACTIVE_HIGH, etc)
- a new PROPERTY_ENTRY_GPIO() macro is supplied to ensure the above
- name of the software node representing gpiochip must match label of
  the gpiochip, as we use it to locate gpiochip structure at runtime

The following illustrates use of software nodes to describe a "System"
button that is currently specified via use of gpio_keys_platform_data
in arch/mips/alchemy/board-mtx1.c. It follows bindings specified in
Documentation/devicetree/bindings/input/gpio-keys.yaml.

static const struct software_node mxt1_gpiochip2_node = {
	.name = "alchemy-gpio2",
};

static const struct property_entry mtx1_gpio_button_props[] = {
	PROPERTY_ENTRY_U32("linux,code", BTN_0),
	PROPERTY_ENTRY_STRING("label", "System button"),
	PROPERTY_ENTRY_GPIO("gpios", &mxt1_gpiochip2_node, 7, GPIO_ACTIVE_LOW),
	{ }
};

Similarly, arch/arm/mach-tegra/board-paz00.c can be converted to:

static const struct software_node tegra_gpiochip_node = {
	.name = "tegra-gpio",
};

static struct property_entry wifi_rfkill_prop[] __initdata = {
	PROPERTY_ENTRY_STRING("name", "wifi_rfkill"),
	PROPERTY_ENTRY_STRING("type", "wlan"),
	PROPERTY_ENTRY_GPIO("reset-gpios",
			    &tegra_gpiochip_node, 25, GPIO_ACTIVE_HIGH);
	PROPERTY_ENTRY_GPIO("shutdown-gpios",
			    &tegra_gpiochip_node, 85, GPIO_ACTIVE_HIGH);
	{ },
};

static struct platform_device wifi_rfkill_device = {
	.name	= "rfkill_gpio",
	.id	= -1,
};

...

	software_node_register(&tegra_gpiochip_node);
	device_create_managed_software_node(&wifi_rfkill_device.dev,
					    wifi_rfkill_prop, NULL);

Acked-by: Linus Walleij 
Reviewed-by: Andy Shevchenko 
Signed-off-by: Dmitry Torokhov 
Signed-off-by: Bartosz Golaszewski

gpio: Add gpio latch driver

2022-10-26T12:52:01+00:00

This driver implements a GPIO multiplexer based on latches connected to
other GPIOs. A set of data GPIOs is connected to the data input of
multiple latches. The clock input of each latch is driven by another
set of GPIOs. With two 8-bit latches 10 GPIOs can be multiplexed into
16 GPIOs. GPOs might be a better term as in fact the multiplexed pins
are output only.

Signed-off-by: Sascha Hauer 
Reviewed-by: Serge Semin 
Reviewed-by: Linus Walleij 
[Bartosz: fixed the strange of_device_id formatting]
Signed-off-by: Bartosz Golaszewski

gpio: idio-16: Introduce the ACCES IDIO-16 GPIO library module

2022-10-25T07:56:46+00:00

Exposes consumer library functions to facilitate communication with
devices within the ACCES IDIO-16 family such as the 104-IDIO-16 and
the PCI-IDIO-16.

A CONFIG_GPIO_IDIO_16 Kconfig option is introduced by this patch.
Modules wanting access to these idio-16 library functions should select
this Kconfig option and import the GPIO_IDIO_16 symbol namespace.

Cc: Andy Shevchenko 
Signed-off-by: William Breathitt Gray 
Signed-off-by: Bartosz Golaszewski

gpio: Remove sta2x11 GPIO driver

2022-10-17T09:02:25+00:00

The Connext chip has 4 gpio cells looking very similar to those of the
Nomadik, whose gpio/pinctrl driver (already featuring devicetree support)
will be used instead of the sta2x11 specific one.

Signed-off-by: Davide Ciminaghi 
Acked-by: Giancarlo Asnaghi 
Acked-by: Linus Walleij 
Signed-off-by: Christophe Leroy 
Signed-off-by: Bartosz Golaszewski

Merge tag 'input-for-v6.1-rc0' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input

2022-10-11T17:53:25+00:00

Pull input updates from Dmitry Torokhov:

 - a new driver for IBM Operational Panel

 - a new driver for PinePhone keyboards

 - RT5120 PMIC power key support

 - various enhancements and support for new models in xpad (Xbox) driver

 - a new compatible ID for Elan touchscreen driver

 - rework of adp5588-keys driver to support configuring via device
   properties (OF, ACPI, etc) instead of platform data, and proper
   support of optional gpiochip functionality (and removal of
   gpio-adp5588 driver)

 - improvements to firmware update handling in Synaptics RMI4 driver

 - support for double key matrix in mt6779-keypad

 - support for polled mode in adc-joystick driver

 - other assorted driver fixes, cleanups and improvements

* tag 'input-for-v6.1-rc0' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (90 commits)
  Input: i8042 - fix refount leak on sparc
  Input: i8042 - add LoongArch support in i8042-acpipnpio.h
  Input: i8042 - rename i8042-x86ia64io.h to i8042-acpipnpio.h
  Input: pinephone-keyboard - support the proxied I2C bus
  Input: pinephone-keyboard - add PinePhone keyboard driver
  dt-bindings: input: Add the PinePhone keyboard binding
  dt-bindings: input: Convert hid-over-i2c to DT schema
  input: drop empty comment blocks
  Input: xpad - add X-Box Adaptive Profile button
  Input: add ABS_PROFILE to uapi and documentation
  Input: xpad - add X-Box Adaptive XBox button
  Input: xpad - add X-Box Adaptive support
  Input: ims-pcu - fix spelling mistake "BOOLTLOADER" -> "BOOTLOADER"
  Input: ibm-panel - add missing MODULE_DEVICE_TABLE
  Input: icn8505 - utilize acpi_get_subsystem_id()
  Input: xpad - decipher xpadone packages with GIP defines
  Input: xpad - refactor using BIT() macro
  Input: synaptics-rmi4 - convert to use sysfs_emit() APIs
  Input: twl4030-pwrbutton - add missing of.h include
  Input: applespi - replace zero-length array with DECLARE_FLEX_ARRAY() helper
  ...

gpio: imx-scu: add imx-scu GPIO driver

2022-08-31T15:21:23+00:00

The SCU firmware on i.MX8 platforms provides a set of APIs to
control the GPIO PINs on the SCU domain. This patch implements the
standard GPIO driver interface to access those PINs on the
SCU domain over the SCU APIs.

Signed-off-by: Shenwei Wang 
Reviewed-by: Linus Walleij 
Signed-off-by: Bartosz Golaszewski

gpio: gpio-adp5588: drop the driver

2022-08-31T04:16:03+00:00

With commit 9d2b2e83ef27 ("Input: adp5588-keys - support gpi key events as
'gpio keys'") the irchip functionality is directly supported in the input
driver as the main goal of these pins is to be used as gpio keys. Hence,
this driver can be removed.

Signed-off-by: Nuno Sá 
Acked-by: Bartosz Golaszewski 
Reviewed-by: Andy Shevchenko 
Link: https://lore.kernel.org/r/20220829131553.690063-3-nuno.sa@analog.com
Signed-off-by: Dmitry Torokhov

gpio: i8255: Introduce the Intel 8255 interface library module

2022-07-20T15:44:36+00:00

Exposes consumer library functions providing support for interfaces
compatible with the venerable Intel 8255 Programmable Peripheral
Interface (PPI).

The Intel 8255 PPI first appeared in the early 1970s, initially for the
Intel 8080 and later appearing in the original IBM-PC. The popularity of
the original Intel 8255 chip led to many subsequent variants and clones
of the interface in various chips and integrated circuits. Although
still popular, interfaces compatible with the Intel 8255 PPI are
nowdays typically found embedded in larger VLSI processing chips and
FPGA components rather than as discrete ICs.

A CONFIG_GPIO_I8255 Kconfig option is introduced by this patch. Modules
wanting access to these i8255 library functions should select this
Kconfig option, and import the I8255 symbol namespace.

Tested-by: Fred Eckert 
Reviewed-by: Linus Walleij 
Cc: John Hentges 
Cc: Jay Dolan 
Cc: Andy Shevchenko 
Signed-off-by: William Breathitt Gray 
Signed-off-by: Bartosz Golaszewski