Merge tag 'gpio-updates-for-v6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux

Pull gpio updates from Bartosz Golaszewski:
 "We have some new drivers, significant refactoring of existing intel
  platforms, lots of improvements all around, mass conversion to using
  immutable irqchips by drivers that had not been converted individually
  yet and some changes in the core library code.

  Summary:

  New drivers:
   - add a driver for the Loongson GPIO controller
   - add a driver for the fxl6408 I2C GPIO expander
   - add a GPIO module containing code common for Intel Elkhart Lake and
     Merrifield platforms
   - add a driver for the Intel Elkhart Lake platform reusing the code
     from the intel tangier library

  GPIOLIB core:
   - GPIO ACPI improvements
   - simplify gpiochip_add_data_with_keys() fwnode handling
   - cleanup header inclusions (remove unneeded ones, order the rest
     alphabetically)
   - remove duplicate code (reuse krealloc() instead of open-coding it,
     drop a duplicated check in gpiod_find_and_request())
   - reshuffle the code to remove unnecessary forward declarations
   - coding style cleanups and improvements
   - add a helper for accessing device fwnodes
   - small updates in docs

  Driver improvements:
   - convert all remaining GPIO irqchip drivers to using immutable
     irqchips
   - drop unnecessary of_match_ptr() macro expansions
   - shrink the code in gpio-merrifield significantly by reusing the
     code from gpio-tangier + minor tweaks to the driver code
   - remove MODULE_LICENSE() from drivers that can only be built-in
   - add device-tree support to gpio-loongson1
   - use new regmap features in gpio-104-dio-48e and gpio-pcie-idio-24
   - minor tweaks and fixes to gpio-xra1403, gpio-sim, gpio-tegra194,
     gpio-omap, gpio-aspeed, gpio-raspberrypi-exp
   - shrink code in gpio-ich and gpio-pxa
   - Kconfig tweak for gpio-pmic-eic-sprd"

* tag 'gpio-updates-for-v6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux: (99 commits)
  gpio: gpiolib: Simplify gpiochip_add_data_with_key() fwnode
  gpiolib: Add gpiochip_set_data() helper
  gpiolib: Move gpiochip_get_data() higher in the code
  gpiolib: Check array_info for NULL only once in gpiod_get_array()
  gpiolib: Replace open coded krealloc()
  gpiolib: acpi: Add a ignore wakeup quirk for Clevo NL5xNU
  gpiolib: acpi: Move ACPI device NULL check to acpi_get_driver_gpio_data()
  gpiolib: acpi: use the fwnode in acpi_gpiochip_find()
  gpio: mm-lantiq: Fix typo in the newly added header filename
  sh: mach-x3proto: Add missing #include <linux/gpio/driver.h>
  powerpc/40x: Add missing select OF_GPIO_MM_GPIOCHIP
  gpio: xlp: Convert to immutable irq_chip
  gpio: xilinx: Convert to immutable irq_chip
  gpio: xgs-iproc: Convert to immutable irq_chip
  gpio: visconti: Convert to immutable irq_chip
  gpio: tqmx86: Convert to immutable irq_chip
  gpio: thunderx: Convert to immutable irq_chip
  gpio: stmpe: Convert to immutable irq_chip
  gpio: siox: Convert to immutable irq_chip
  gpio: rda: Convert to immutable irq_chip
  ...

1 files changed, 64 insertions, 17 deletions

diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
index badbe0582318..b81393072715 100644
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -3,14 +3,6 @@
 # GPIO infrastructure and drivers
 #
 
-config ARCH_HAVE_CUSTOM_GPIO_H
-	bool
-	help
-	  Selecting this config option from the architecture Kconfig allows
-	  the architecture to provide a custom asm/gpio.h implementation
-	  overriding the default implementations.  New uses of this are
-	  strongly discouraged.
-
 menuconfig GPIOLIB
 	bool "GPIO Support"
 	help
@@ -47,6 +39,14 @@ config GPIOLIB_IRQCHIP
 	select IRQ_DOMAIN
 	bool
 
+config OF_GPIO_MM_GPIOCHIP
+	bool
+	help
+	  This adds support for the legacy 'struct of_mm_gpio_chip' interface
+	  from PowerPC. Existing drivers using this interface need to select
+	  this symbol, but new drivers should use the generic gpio-regmap
+	  infrastructure instead.
+
 config DEBUG_GPIO
 	bool "Debug GPIO calls"
 	depends on DEBUG_KERNEL
@@ -139,6 +139,7 @@ config GPIO_ALTERA
 	tristate "Altera GPIO"
 	depends on OF_GPIO
 	select GPIOLIB_IRQCHIP
+	select OF_GPIO_MM_GPIOCHIP
 	help
 	  Say Y or M here to build support for the Altera PIO device.
 
@@ -380,6 +381,18 @@ config GPIO_LOONGSON
 	help
 	  Driver for GPIO functionality on Loongson-2F/3A/3B processors.
 
+config GPIO_LOONGSON_64BIT
+	tristate "Loongson 64 bit GPIO support"
+	depends on LOONGARCH || COMPILE_TEST
+	depends on OF_GPIO
+	select GPIO_GENERIC
+	help
+	  Say yes here to support the GPIO functionality of a number of
+	  Loongson series of chips. The Loongson GPIO controller supports
+	  up to 60 GPIOS in total, 4 of which are dedicated GPIO pins, and
+	  the remaining 56 are reused with other functions, with edge or
+	  level triggered interrupts.
+
 config GPIO_LPC18XX
 	tristate "NXP LPC18XX/43XX GPIO support"
 	default y if ARCH_LPC18XX
@@ -411,6 +424,7 @@ config GPIO_MENZ127
 config GPIO_MM_LANTIQ
 	bool "Lantiq Memory mapped GPIOs"
 	depends on LANTIQ && SOC_XWAY
+	select OF_GPIO_MM_GPIOCHIP
 	help
 	  This enables support for memory mapped GPIOs on the External Bus Unit
 	  (EBU) found on Lantiq SoCs. The GPIOs are output only as they are
@@ -419,6 +433,7 @@ config GPIO_MM_LANTIQ
 config GPIO_MPC5200
 	def_bool y
 	depends on PPC_MPC52xx
+	select OF_GPIO_MM_GPIOCHIP
 
 config GPIO_MPC8XXX
 	bool "MPC512x/MPC8xxx/QorIQ GPIO support"
@@ -485,14 +500,6 @@ config GPIO_PL061
 	help
 	  Say yes here to support the PrimeCell PL061 GPIO device.
 
-config GPIO_PMIC_EIC_SPRD
-	tristate "Spreadtrum PMIC EIC support"
-	depends on MFD_SC27XX_PMIC || COMPILE_TEST
-	depends on OF_GPIO
-	select GPIOLIB_IRQCHIP
-	help
-	  Say yes here to support Spreadtrum PMIC EIC device.
-
 config GPIO_PXA
 	bool "PXA GPIO support"
 	depends on ARCH_PXA || ARCH_MMP || COMPILE_TEST
@@ -616,6 +623,17 @@ config GPIO_SYSCON
 	help
 	  Say yes here to support GPIO functionality though SYSCON driver.
 
+config GPIO_TANGIER
+	tristate
+	select GPIOLIB_IRQCHIP
+	help
+	  GPIO support for Intel Tangier and compatible platforms.
+	  Currently supported:
+	   - Elkhart Lake
+	   - Merrifield
+
+	  If built as a module its name will be gpio-tangier.
+
 config GPIO_TB10X
 	bool
 	select GPIO_GENERIC
@@ -1000,6 +1018,16 @@ config GPIO_ADNP
 	  enough to represent all pins, but the driver will assume a
 	  register layout for 64 pins (8 registers).
 
+config GPIO_FXL6408
+	tristate "FXL6408 I2C GPIO expander"
+	select GPIO_REGMAP
+	select REGMAP_I2C
+	help
+	  GPIO driver for Fairchild Semiconductor FXL6408 GPIO expander.
+
+	  To compile this driver as a module, choose M here: the module will
+	  be called gpio-fxl6408.
+
 config GPIO_GW_PLD
 	tristate "Gateworks PLD GPIO Expander"
 	depends on OF_GPIO
@@ -1235,6 +1263,17 @@ config HTC_EGPIO
 	  several HTC phones.  It provides basic support for input
 	  pins, output pins, and IRQs.
 
+config GPIO_ELKHARTLAKE
+	tristate "Intel Elkhart Lake PSE GPIO support"
+	depends on X86 || COMPILE_TEST
+	select GPIO_TANGIER
+	help
+	  Select this option to enable GPIO support for Intel Elkhart Lake
+	  PSE GPIO IP.
+
+	  To compile this driver as a module, choose M here: the module will
+	  be called gpio-elkhartlake.
+
 config GPIO_JANZ_TTL
 	tristate "Janz VMOD-TTL Digital IO Module"
 	depends on MFD_JANZ_CMODIO
@@ -1311,6 +1350,14 @@ config GPIO_PALMAS
 	  Select this option to enable GPIO driver for the TI PALMAS
 	  series chip family.
 
+config GPIO_PMIC_EIC_SPRD
+	tristate "Spreadtrum PMIC EIC support"
+	depends on MFD_SC27XX_PMIC || COMPILE_TEST
+	depends on OF_GPIO
+	select GPIOLIB_IRQCHIP
+	help
+	  Say yes here to support Spreadtrum PMIC EIC device.
+
 config GPIO_RC5T583
 	bool "RICOH RC5T583 GPIO"
 	depends on MFD_RC5T583
@@ -1505,7 +1552,7 @@ config GPIO_BT8XX
 config GPIO_MERRIFIELD
 	tristate "Intel Merrifield GPIO support"
 	depends on X86_INTEL_MID
-	select GPIOLIB_IRQCHIP
+	select GPIO_TANGIER
 	help
 	  Say Y here to support Intel Merrifield GPIO.