Commit 1d8ce0e0 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge tag 'gpio-v5.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio 

Pull GPIO updates from Linus Walleij:
 "This is the bulk of GPIO changes for the v5.9 kernel cycle.

  There is nothing too exciting in it, but a new macro that fixes a
  build failure on a minor ARM32 platform that appeared yesterday is
  part of it so we better merge it.

  Core changes:

   - Introduce the for_each_requested_gpio() macro to help in dependent
     code all over the place. Also patch a few locations to use it while
     we are at it.

   - Split out the sysfs code into its own file.

   - Split out the character device code into its own file, then make a
     set of refactorings and improvements to this code. We are setting
     the stage to revamp the userspace API a bit in the next cycle.

   - Fix a whole slew of kerneldoc that was wrong or missing.

  New drivers:

   - The PCA953x driver now supports the PCAL9535.

  Driver improvements:

   - A host of incremental modernizations and improvements to the
     PCA953x driver.

   - Incremental improvements to the Xilinx Zynq driver.

   - Some improvements to the GPIO aggregator driver.

   - I ran all over the place switching all threaded and other drivers
     requesting their own IRQ while using the core GPIO IRQ helpers to
     pass the GPIO irq chip as a template instead of calling the
     explicit set-up functions. Next merge window we may retire the old
     code altogether"

* tag 'gpio-v5.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio: (97 commits)
  gpio: wcove: Request IRQ after all initialisation done
  gpio: crystalcove: Free IRQ on error path
  gpio: pca953x: Request IRQ after all initialisation done
  gpio: don't use same lockdep class for all devm_gpiochip_add_data users
  gpio: max732x: Use irqchip template
  gpio: stmpe: Move chip registration
  gpio: rcar: Use irqchip template
  gpio: regmap: fix type clash
  gpio: Correct kernel-doc inconsistency
  gpio: pci-idio-16: Use irqchip template
  gpio: pcie-idio-24: Use irqchip template
  gpio: 104-idio-16: Use irqchip template
  gpio: 104-idi-48: Use irqchip template
  gpio: 104-dio-48e: Use irqchip template
  gpio: ws16c48: Use irqchip template
  gpio: omap: improve coding style for pin config flags
  gpio: dln2: Use irqchip template
  gpio: sch: Add a blank line between declaration and code
  gpio: sch: changed every 'unsigned' to 'unsigned int'
  gpio: ich: changed every 'unsigned' to 'unsigned int'
  ...
parents 58552408 22cc4220

Documentation/devicetree/bindings/gpio/gpio-pca953x.txt

+1 −0
Original line number Diff line number Diff line
@@ -19,6 +19,7 @@ Required properties: 
	nxp,pca9698

	nxp,pcal6416

	nxp,pcal6524

	nxp,pcal9535

	nxp,pcal9555a

	maxim,max7310

	maxim,max7312

Documentation/devicetree/bindings/gpio/gpio-pca9570.yaml

0 → 100644
+47 −0
Original line number Diff line number Diff line 
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)

%YAML 1.2

---

$id: http://devicetree.org/schemas/gpio/gpio-pca9570.yaml#

$schema: http://devicetree.org/meta-schemas/core.yaml#



title: PCA9570 I2C GPO expander



maintainers:

  - Sungbo Eo <mans0n@gorani.run>



properties:

  compatible:

    enum:

      - nxp,pca9570



  reg:

    maxItems: 1



  gpio-controller: true



  '#gpio-cells':

    const: 2



required:

  - compatible

  - reg

  - gpio-controller

  - "#gpio-cells"



additionalProperties: false



examples:

  - |

    i2c0 {

        #address-cells = <1>;

        #size-cells = <0>;



        gpio@24 {

            compatible = "nxp,pca9570";

            reg = <0x24>;

            gpio-controller;

            #gpio-cells = <2>;

        };

    };



...

Documentation/devicetree/bindings/gpio/gpio-zynq.txt

+3 −1
Original line number Diff line number Diff line
@@ -6,7 +6,9 @@ Required properties: 
			  - First cell is the GPIO line number

			  - Second cell is used to specify optional

			    parameters (unused)

- compatible		: Should be "xlnx,zynq-gpio-1.0" or "xlnx,zynqmp-gpio-1.0"

- compatible		: Should be "xlnx,zynq-gpio-1.0" or

			  "xlnx,zynqmp-gpio-1.0" or "xlnx,versal-gpio-1.0

			  or "xlnx,pmc-gpio-1.0

- clocks		: Clock specifier (see clock bindings for details)

- gpio-controller	: Marks the device node as a GPIO controller.

- interrupts		: Interrupt specifier (see interrupt bindings for

Documentation/driver-api/gpio/drivers-on-gpio.rst

+7 −0
Original line number Diff line number Diff line
@@ -89,6 +89,13 @@ hardware descriptions such as device tree or ACPI: 
  Consumer Electronics Control bus using only GPIO. It is used to communicate

  with devices on the HDMI bus.



- gpio-charger: drivers/power/supply/gpio-charger.c is used if you need to do

  battery charging and all you have to go by to check the presence of the

  AC charger or more complex tasks such as indicating charging status using

  nothing but GPIO lines, this driver provides that and also a clearly defined

  way to pass the charging parameters from hardware descriptions such as the

  device tree.



Apart from this there are special GPIO drivers in subsystems like MMC/SD to

read card detect and write protect GPIO lines, and in the TTY serial subsystem

to emulate MCTRL (modem control) signals CTS/RTS by using two GPIO lines. The

drivers/gpio/Kconfig

+10 −2
Original line number Diff line number Diff line
@@ -410,7 +410,7 @@ config GPIO_MXS 


config GPIO_OCTEON

	tristate "Cavium OCTEON GPIO"

	depends on GPIOLIB && CAVIUM_OCTEON_SOC

	depends on CAVIUM_OCTEON_SOC

	default y

	help

	  Say yes here to support the on-chip GPIO lines on the OCTEON
@@ -962,6 +962,14 @@ config GPIO_PCA953X_IRQ 
	  Say yes here to enable the pca953x to be used as an interrupt

	  controller. It requires the driver to be built in the kernel.



config GPIO_PCA9570

	tristate "PCA9570 4-Bit I2C GPO expander"

	help

	  Say yes here to enable the GPO driver for the NXP PCA9570 chip.



	  To compile this driver as a module, choose M here: the module will

	  be called gpio-pca9570.



config GPIO_PCF857X

	tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"

	select GPIOLIB_IRQCHIP
@@ -1117,7 +1125,7 @@ config GPIO_DLN2 


config HTC_EGPIO

	bool "HTC EGPIO support"

	depends on GPIOLIB && ARM

	depends on ARM

	help

	  This driver supports the CPLD egpio chip present on

	  several HTC phones.  It provides basic support for input

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