Merge tag 'gpio-v5.8-1' 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 v5.8 kernel cycle.

  Core changes:

   - A new GPIO aggregator driver has been merged: this can join a few
     select GPIO lines into a new aggregated GPIO chip. This can be used
     for security: a process can be granted access to only these lines,
     for example for industrial control. Another way to use this is to
     reexpose certain select lines to a virtual machine or container.

   - Warn if the gpio-line-names is too long in he DT parser core.

   - GPIO lines can now be looked up by line name in addition to being
     looked up by offset.

  New drivers:

   - A new generic regmap GPIO driver has been merged. Too many regmap
     drivers are starting to look like each other so we need to create
     some common ground and try to move drivers over to using that.

   - The F7188X driver now supports F81865.

  Driver improvements:

   - Large improvements to the PCA953x expander, get multiple lines and
     several cleanups.

   - Large improvements to the DesignWare DWAPB driver, and Sergey Semin
     has volunteered to maintain it.

   - PL061 can now be built as a module, this is part of a bigger effort
     to make the ARM platforms more modular"

* tag 'gpio-v5.8-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio: (77 commits)
  gpio: pca953x: Drop unneeded ACPI_PTR()
  MAINTAINERS: Add gpio regmap section
  gpio: add a reusable generic gpio_chip using regmap
  gpiolib: Introduce gpiochip_irqchip_add_domain()
  gpio: gpiolib: Allow GPIO IRQs to lazy disable
  gpiolib: Separate GPIO_GET_LINEINFO_WATCH_IOCTL conditional
  gpio: rcar: Fix runtime PM imbalance on error
  gpio: pca935x: Allow IRQ support for driver built as a module
  gpio: pxa: Add COMPILE_TEST support
  dt-bindings: gpio: Add renesas,em-gio bindings
  MAINTAINERS: Fix file name for DesignWare GPIO DT schema
  gpio: dwapb: Remove unneeded has_irq member in struct dwapb_port_property
  gpio: dwapb: Don't use IRQ 0 as valid Linux interrupt
  gpio: dwapb: avoid error message for optional IRQ
  gpio: dwapb: Call acpi_gpiochip_free_interrupts() on GPIO chip de-registration
  gpio: max730x: bring gpiochip_add_data after port config
  MAINTAINERS: Add GPIO Aggregator section
  docs: gpio: Add GPIO Aggregator documentation
  gpio: Add GPIO Aggregator
  gpiolib: Add support for GPIO lookup by line name
  ...

1 files changed, 20 insertions, 4 deletions

diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
index 1b96169d84f7..bcacd9c74aa8 100644
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -73,6 +73,10 @@ config GPIO_GENERIC
 	depends on HAS_IOMEM # Only for IOMEM drivers
 	tristate
 
+config GPIO_REGMAP
+	depends on REGMAP
+	tristate
+
 # put drivers in the right section, in alphabetical order
 
 # This symbol is selected by both I2C and SPI expanders
@@ -422,7 +426,7 @@ config GPIO_OMAP
 	  Say yes here to enable GPIO support for TI OMAP SoCs.
 
 config GPIO_PL061
-	bool "PrimeCell PL061 GPIO support"
+	tristate "PrimeCell PL061 GPIO support"
 	depends on ARM_AMBA
 	select IRQ_DOMAIN
 	select GPIOLIB_IRQCHIP
@@ -439,7 +443,7 @@ config GPIO_PMIC_EIC_SPRD
 
 config GPIO_PXA
 	bool "PXA GPIO support"
-	depends on ARCH_PXA || ARCH_MMP
+	depends on ARCH_PXA || ARCH_MMP || COMPILE_TEST
 	help
 	  Say yes here to support the PXA GPIO device
 
@@ -638,7 +642,7 @@ config GPIO_XGENE
 
 config GPIO_XGENE_SB
 	tristate "APM X-Gene GPIO standby controller support"
-	depends on ARCH_XGENE && OF_GPIO
+	depends on (ARCH_XGENE || COMPILE_TEST)
 	select GPIO_GENERIC
 	select GPIOLIB_IRQCHIP
 	select IRQ_DOMAIN_HIERARCHY
@@ -952,7 +956,7 @@ config GPIO_PCA953X
 
 config GPIO_PCA953X_IRQ
 	bool "Interrupt controller support for PCA953x"
-	depends on GPIO_PCA953X=y
+	depends on GPIO_PCA953X
 	select GPIOLIB_IRQCHIP
 	help
 	  Say yes here to enable the pca953x to be used as an interrupt
@@ -1541,6 +1545,18 @@ config GPIO_VIPERBOARD
 
 endmenu
 
+config GPIO_AGGREGATOR
+	tristate "GPIO Aggregator"
+	help
+	  Say yes here to enable the GPIO Aggregator, which provides a way to
+	  aggregate existing GPIO lines into a new virtual GPIO chip.
+	  This can serve the following purposes:
+	    - Assign permissions for a collection of GPIO lines to a user,
+	    - Export a collection of GPIO lines to a virtual machine,
+	    - Provide a generic driver for a GPIO-operated device in an
+	      industrial control context, to be operated from userspace using
+	      the GPIO chardev interface.
+
 config GPIO_MOCKUP
 	tristate "GPIO Testing Driver"
 	select IRQ_SIM