Merge tag 'gpio-updates-for-v6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux

Pull gpio updates from Bartosz Golaszewski:
 "There are two new drivers and support for more models in existing
  ones.

  The generic GPIO API has been reworked and all users converted
  which allowed us to move the fields specific to the generic GPIO
  implementation out of the high-level struct gpio_chip into its own
  structure that wraps the gpio_chip.

  Other than that, there's nothing too exciting. Mostly minor tweaks and
  fixes all over the place, some refactoring and some small new features
  in helper modules.

  GPIO core:
   - add support for sparse pin ranges to the glue between GPIO and
     pinctrl
   - use a common prefix across all GPIO descriptor flags for improved
     namespacing

  New drivers:
   - add new GPIO driver for the Nuvoton NCT6694
   - add new GPIO driver for MAX7360

  Driver improvements:
   - add support for Tegra 256 to the gpio-tegra186 driver
   - add support for Loongson-2K0300 to the gpio-loongson-64bit driver
   - refactor the gpio-aggregator module to expose its GPIO forwarder
     API to other in-kernel users (to enable merging of a new pinctrl
     driver that uses it)
   - convert all remaining drivers to using the modernized generic GPIO
     chip API and remove the old interface
   - stop displaying global GPIO numbers in debugfs output of controller
     drivers
   - extend the gpio-regmap helper with a new config option and improve
     its support for GPIO interrupts
   - remove redundant fast_io parameter from regmap configs in GPIO
     drivers that already use MMIO regmaps which imply it
   - add support for a new model in gpio-mmio: ixp4xx expansion bus
   - order includes alphabetically in a few drivers for better
     readability
   - use generic device properties where applicable
   - use devm_mutex_init() where applicable
   - extend build coverage of drivers by enabling more to be compiled
     with COMPILE_TEST enabled
   - allow building gpio-stmpe as a module
   - use dev_err_probe() where it makes sense in drivers

  Late driver fixes:
   - fix setting GPIO direction to output in gpio-mpfs

  Documentation:
   - document the usage of software nodes with GPIO chips

  Device-tree bindings:
   - Add DT bindings documents for new hardware: Tegra256, MAX7360
   - Document a new model in Loongson bindings: LS2K0300
   - Document a new model using the generic GPIO binding: IXP4xx
   - Convert the DT binding for fsl,mxs-pinctrl to YAML
   - fix the schema ID in the "trivial" GPIO schema
   - describe GPIO hogs in the generic GPIO binding"

* tag 'gpio-updates-for-v6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux: (122 commits)
  gpio: mpfs: fix setting gpio direction to output
  gpio: generic: move GPIO_GENERIC_ flags to the correct header
  gpio: generic: rename BGPIOF_ flags to GPIO_GENERIC_
  gpio: nomadik: fix the debugfs helper stub
  MAINTAINERS: Add entry on MAX7360 driver
  input: misc: Add support for MAX7360 rotary
  input: keyboard: Add support for MAX7360 keypad
  gpio: max7360: Add MAX7360 gpio support
  gpio: regmap: Allow to provide init_valid_mask callback
  gpio: regmap: Allow to allocate regmap-irq device
  pwm: max7360: Add MAX7360 PWM support
  pinctrl: Add MAX7360 pinctrl driver
  mfd: Add max7360 support
  dt-bindings: mfd: gpio: Add MAX7360
  rtc: Add Nuvoton NCT6694 RTC support
  hwmon: Add Nuvoton NCT6694 HWMON support
  watchdog: Add Nuvoton NCT6694 WDT support
  can: Add Nuvoton NCT6694 CANFD support
  i2c: Add Nuvoton NCT6694 I2C support
  gpio: Add Nuvoton NCT6694 GPIO support
  ...

101 files changed, 7328 insertions, 1563 deletions

diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
index 23b5820e1854..caeb7bee50cf 100644
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -303,7 +303,7 @@ config GPIO_EN7523
 
 config GPIO_EP93XX
 	def_bool y
-	depends on ARCH_EP93XX
+	depends on ARCH_EP93XX || COMPILE_TEST
 	select GPIO_GENERIC
 	select GPIOLIB_IRQCHIP
 
@@ -408,8 +408,7 @@ config GPIO_IMX_SCU
 
 config GPIO_IXP4XX
 	bool "Intel IXP4xx GPIO"
-	depends on ARCH_IXP4XX
-	depends on OF
+	depends on (ARCH_IXP4XX && OF) || COMPILE_TEST
 	select GPIO_GENERIC
 	select GPIOLIB_IRQCHIP
 	select IRQ_DOMAIN_HIERARCHY
@@ -437,6 +436,7 @@ config GPIO_LOONGSON_64BIT
 	depends on LOONGARCH || COMPILE_TEST
 	depends on OF_GPIO
 	select GPIO_GENERIC
+	select GPIOLIB_IRQCHIP
 	help
 	  Say yes here to support the GPIO functionality of a number of
 	  Loongson series of chips. The Loongson GPIO controller supports
@@ -734,7 +734,8 @@ config GPIO_TANGIER
 	  If built as a module its name will be gpio-tangier.
 
 config GPIO_TB10X
-	bool
+	bool "Abilis Systems TB10x GPIO controller"
+	depends on ARC_PLAT_TB10X || COMPILE_TEST
 	select GPIO_GENERIC
 	select GENERIC_IRQ_CHIP
 	select OF_GPIO
@@ -883,7 +884,7 @@ config GPIO_ZYNQMP_MODEPIN
 
 config GPIO_LOONGSON1
 	tristate "Loongson1 GPIO support"
-	depends on MACH_LOONGSON32
+	depends on MACH_LOONGSON32 || COMPILE_TEST
 	select GPIO_GENERIC
 	help
 	  Say Y or M here to support GPIO on Loongson1 SoCs.
@@ -1193,14 +1194,18 @@ config GPIO_PCA953X
 	  4 bits:       pca9536, pca9537
 
 	  8 bits:       max7310, max7315, pca6107, pca9534, pca9538, pca9554,
-	                pca9556, pca9557, pca9574, tca6408, tca9554, xra1202
+	                pca9556, pca9557, pca9574, tca6408, tca9554, xra1202,
+			pcal6408, pcal9554b, tca9538
 
 	  16 bits:      max7312, max7313, pca9535, pca9539, pca9555, pca9575,
-	                tca6416
+	                tca6416, pca6416, pcal6416, pcal9535, pcal9555a, max7318,
+			tca9539
+
+	  18 bits:	tca6418
 
-	  24 bits:      tca6424
+	  24 bits:      tca6424, pcal6524
 
-	  40 bits:      pca9505, pca9698
+	  40 bits:      pca9505, pca9698, pca9506
 
 config GPIO_PCA953X_IRQ
 	bool "Interrupt controller support for PCA953x"
@@ -1491,6 +1496,18 @@ config GPIO_MADERA
 	help
 	  Support for GPIOs on Cirrus Logic Madera class codecs.
 
+config GPIO_MAX7360
+	tristate "MAX7360 GPIO support"
+	depends on MFD_MAX7360
+	select GPIO_REGMAP
+	select REGMAP_IRQ
+	help
+	  Allows to use MAX7360 I/O Expander PWM lines as GPIO and keypad COL
+	  lines as GPO.
+
+	  This driver can also be built as a module. If so, the module will be
+	  called gpio-max7360.
+
 config GPIO_MAX77620
 	tristate "GPIO support for PMIC MAX77620 and MAX20024"
 	depends on MFD_MAX77620
@@ -1521,6 +1538,18 @@ config GPIO_MAX77759
 	  This driver can also be built as a module. If so, the module will be
 	  called gpio-max77759.
 
+config GPIO_NCT6694
+	tristate "Nuvoton NCT6694 GPIO controller support"
+	depends on MFD_NCT6694
+	select GENERIC_IRQ_CHIP
+	select GPIOLIB_IRQCHIP
+	help
+	  This driver supports 8 GPIO pins per bank that can all be interrupt
+	  sources.
+
+	  This driver can also be built as a module. If so, the module will be
+	  called gpio-nct6694.
+
 config GPIO_PALMAS
 	tristate "TI PALMAS series PMICs GPIO"
 	depends on MFD_PALMAS
@@ -1558,7 +1587,7 @@ config GPIO_SL28CPLD
 	  called gpio-sl28cpld.
 
 config GPIO_STMPE
-	bool "STMPE GPIOs"
+	tristate "STMPE GPIOs"
 	depends on MFD_STMPE
 	depends on OF_GPIO
 	select GPIOLIB_IRQCHIP
diff --git a/drivers/gpio/Makefile b/drivers/gpio/Makefile
index 379f55e9ed1e..000fa2e397c2 100644
--- a/drivers/gpio/Makefile
+++ b/drivers/gpio/Makefile
@@ -106,6 +106,7 @@ obj-$(CONFIG_GPIO_MAX7300)		+= gpio-max7300.o
 obj-$(CONFIG_GPIO_MAX7301)		+= gpio-max7301.o
 obj-$(CONFIG_GPIO_MAX730X)		+= gpio-max730x.o
 obj-$(CONFIG_GPIO_MAX732X)		+= gpio-max732x.o
+obj-$(CONFIG_GPIO_MAX7360)		+= gpio-max7360.o
 obj-$(CONFIG_GPIO_MAX77620)		+= gpio-max77620.o
 obj-$(CONFIG_GPIO_MAX77650)		+= gpio-max77650.o
 obj-$(CONFIG_GPIO_MAX77759)		+= gpio-max77759.o
@@ -128,6 +129,7 @@ obj-$(CONFIG_GPIO_MT7621)		+= gpio-mt7621.o
 obj-$(CONFIG_GPIO_MVEBU)		+= gpio-mvebu.o
 obj-$(CONFIG_GPIO_MXC)			+= gpio-mxc.o
 obj-$(CONFIG_GPIO_MXS)			+= gpio-mxs.o
+obj-$(CONFIG_GPIO_NCT6694)		+= gpio-nct6694.o
 obj-$(CONFIG_GPIO_NOMADIK)		+= gpio-nomadik.o
 obj-$(CONFIG_GPIO_NPCM_SGPIO)		+= gpio-npcm-sgpio.o
 obj-$(CONFIG_GPIO_OCTEON)		+= gpio-octeon.o
diff --git a/drivers/gpio/TODO b/drivers/gpio/TODO
index 7a09a4f58551..8ed74e05903a 100644
--- a/drivers/gpio/TODO
+++ b/drivers/gpio/TODO
@@ -131,11 +131,6 @@ Work items:
   helpers (x86 inb()/outb()) and convert port-mapped I/O drivers to use
   this with dry-coding and sending to maintainers to test
 
-- Move the MMIO GPIO specific fields out of struct gpio_chip into a
-  dedicated structure. Currently every GPIO chip has them if gpio-mmio is
-  enabled in Kconfig even if it itself doesn't register with the helper
-  library.
-
 -------------------------------------------------------------------------------
 
 Generic regmap GPIO
@@ -176,18 +171,6 @@ cannot be converted yet, but watch this space!
 
 -------------------------------------------------------------------------------
 
-Convert all GPIO chips to using the new, value returning line setters
-
-struct gpio_chip's set() and set_multiple() callbacks are now deprecated. They
-return void and thus do not allow drivers to indicate failure to set the line
-value back to the caller.
-
-We've now added new variants - set_rv() and set_multiple_rv() that return an
-integer. Let's convert all GPIO drivers treewide to use the new callbacks,
-remove the old ones and finally rename the new ones back to the old names.
-
--------------------------------------------------------------------------------
-
 Remove legacy sysfs features
 
 We have two parallel per-chip class devices and per-exported-line attribute
diff --git a/drivers/gpio/gpio-aggregator.c b/drivers/gpio/gpio-aggregator.c
index af9d8b3a711d..37600faf4a4b 100644
--- a/drivers/gpio/gpio-aggregator.c
+++ b/drivers/gpio/gpio-aggregator.c
@@ -12,6 +12,7 @@
 #include <linux/configfs.h>
 #include <linux/ctype.h>
 #include <linux/delay.h>
+#include <linux/export.h>
 #include <linux/idr.h>
 #include <linux/kernel.h>
 #include <linux/list.h>
@@ -28,6 +29,7 @@
 
 #include <linux/gpio/consumer.h>
 #include <linux/gpio/driver.h>
+#include <linux/gpio/forwarder.h>
 #include <linux/gpio/machine.h>
 
 #include "dev-sync-probe.h"
@@ -244,18 +246,34 @@ struct gpiochip_fwd {
 		spinlock_t slock;	/* protects tmp[] if !can_sleep */
 	};
 	struct gpiochip_fwd_timing *delay_timings;
+	void *data;
+	unsigned long *valid_mask;
 	unsigned long tmp[];		/* values and descs for multiple ops */
 };
 
-#define fwd_tmp_values(fwd)	&(fwd)->tmp[0]
-#define fwd_tmp_descs(fwd)	(void *)&(fwd)->tmp[BITS_TO_LONGS((fwd)->chip.ngpio)]
+#define fwd_tmp_values(fwd)	(&(fwd)->tmp[0])
+#define fwd_tmp_descs(fwd)	((void *)&(fwd)->tmp[BITS_TO_LONGS((fwd)->chip.ngpio)])
 
 #define fwd_tmp_size(ngpios)	(BITS_TO_LONGS((ngpios)) + (ngpios))
 
+static int gpio_fwd_request(struct gpio_chip *chip, unsigned int offset)