Merge tag 'gpio-v5.1-1' 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 v5.1 cycle:

  Core changes:

   - The big change this time around is the irqchip handling in the
     qualcomm pin controllers, closely coupled with the gpiochip. This
     rework, in a classic fall-between-the-chairs fashion has been
     sidestepped for too long.

     The Qualcomm IRQchips using the SPMI and SSBI transport mechanisms
     have been rewritten to use hierarchical irqchip. This creates the
     base from which I intend to gradually pull support for hierarchical
     irqchips into the gpiolib irqchip helpers to cut down on duplicate
     code.

     We have too many hacks in the kernel because people have been
     working around the missing hierarchical irqchip for years, and once
     it was there, noone understood it for a while. We are now slowly
     adapting to using it.

     This is why this pull requests include changes to MFD, SPMI,
     IRQchip core and some ARM Device Trees pertaining to the Qualcomm
     chip family. Since Qualcomm have so many chips and such large
     deployments it is paramount that this platform gets this right, and
     now it (hopefully) does.

   - Core support for pull-up and pull-down configuration, also from the
     device tree. When a simple GPIO chip supports an "off or on" pull-up
     or pull-down resistor, we provide a way to set this up using
     machine descriptors or device tree.

     If more elaborate control of pull up/down (such as resistance shunt
     setting) is required, drivers should be phased over to use pin
     control. We do not yet provide a userspace ABI for this pull
     up-down setting but I suspect the makers are going to ask for it
     soon enough. PCA953x is the first user of this new API.

   - The GPIO mockup driver has been revamped after some discussion
     improving the IRQ simulator in the process.

     The idea is to make it possible to use the mockup for both testing
     and virtual prototyping, e.g. when you do not yet have a GPIO
     expander to play with but really want to get something to develop
     code around before hardware is available. It's neat. The blackbox
     testing usecase is currently making its way into kernelci.

   - ACPI GPIO core preserves non direction flags when updating flags.

   - A new device core helper for devm_platform_ioremap_resource() is
     funneled through the GPIO tree with Greg's ACK.

  New drivers:

   - TQ-Systems QTMX86 GPIO controllers (using port-mapped I/O)

   - Gateworks PLD GPIO driver (vaccumed up from OpenWrt)

   - AMD G-Series PCH (Platform Controller Hub) GPIO driver.

   - Fintek F81804 & F81966 subvariants.

   - PCA953x now supports NXP PCAL6416.

  Driver improvements:

   - IRQ support on the Nintendo Wii (Hollywood) GPIO.

   - get_direction() support for the MVEBU driver.

   - Set the right output level on SAMA5D2.

   - Drop the unused irq trigger setting on the Spreadtrum driver.

   - Wakeup support for PCA953x.

   - A slew of cleanups in the various Intel drivers"

* tag 'gpio-v5.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio: (110 commits)
  gpio: gpio-omap: fix level interrupt idling
  gpio: amd-fch: Set proper output level for direction_output
  x86: apuv2: remove unused variable
  gpio: pca953x: Use PCA_LATCH_INT
  platform/x86: fix PCENGINES_APU2 Kconfig warning
  gpio: pca953x: Fix dereference of irq data in shutdown
  gpio: amd-fch: Fix type error found by sparse
  gpio: amd-fch: Drop const from resource
  gpio: mxc: add check to return defer probe if clock tree NOT ready
  gpio: ftgpio: Register per-instance irqchip
  gpio: ixp4xx: Add DT bindings
  x86: pcengines apuv2 gpio/leds/keys platform driver
  gpio: AMD G-Series PCH gpio driver
  drivers: depend on HAS_IOMEM for devm_platform_ioremap_resource()
  gpio: tqmx86: Set proper output level for direction_output
  gpio: sprd: Change to use SoC compatible string
  gpio: sprd: Use SoC compatible string instead of wildcard string
  gpio: of: Handle both enable-gpio{,s}
  gpio: of: Restrict enable-gpio quirk to regulator-gpio
  gpio: davinci: use devm_platform_ioremap_resource()
  ...

8 files changed, 70 insertions, 0 deletions

diff --git a/include/dt-bindings/gpio/gpio.h b/include/dt-bindings/gpio/gpio.h
index 2cc10ae4bbb7..c029467e828b 100644
--- a/include/dt-bindings/gpio/gpio.h
+++ b/include/dt-bindings/gpio/gpio.h
@@ -33,4 +33,10 @@
 #define GPIO_PERSISTENT 0
 #define GPIO_TRANSITORY 8
 
+/* Bit 4 express pull up */
+#define GPIO_PULL_UP 16
+
+/* Bit 5 express pull down */
+#define GPIO_PULL_DOWN 32
+
 #endif
diff --git a/include/linux/gpio/driver.h b/include/linux/gpio/driver.h
index 07cddbf45186..01497910f023 100644
--- a/include/linux/gpio/driver.h
+++ b/include/linux/gpio/driver.h
@@ -472,6 +472,11 @@ int gpiochip_irq_map(struct irq_domain *d, unsigned int irq,
 		     irq_hw_number_t hwirq);
 void gpiochip_irq_unmap(struct irq_domain *d, unsigned int irq);
 
+int gpiochip_irq_domain_activate(struct irq_domain *domain,
+				 struct irq_data *data, bool reserve);
+void gpiochip_irq_domain_deactivate(struct irq_domain *domain,
+				    struct irq_data *data);
+
 void gpiochip_set_chained_irqchip(struct gpio_chip *gpiochip,
 		struct irq_chip *irqchip,
 		unsigned int parent_irq,
diff --git a/include/linux/gpio/machine.h b/include/linux/gpio/machine.h
index daa44eac9241..69673be10213 100644
--- a/include/linux/gpio/machine.h
+++ b/include/linux/gpio/machine.h
@@ -12,6 +12,8 @@ enum gpio_lookup_flags {
 	GPIO_OPEN_SOURCE = (1 << 2),
 	GPIO_PERSISTENT = (0 << 3),
 	GPIO_TRANSITORY = (1 << 3),
+	GPIO_PULL_UP = (1 << 4),
+	GPIO_PULL_DOWN = (1 << 5),
 };
 
 /**
diff --git a/include/linux/irq.h b/include/linux/irq.h
index 5e91f6bcaacd..d6160d479b14 100644
--- a/include/linux/irq.h
+++ b/include/linux/irq.h
@@ -615,6 +615,7 @@ extern void irq_chip_disable_parent(struct irq_data *data);
 extern void irq_chip_ack_parent(struct irq_data *data);
 extern int irq_chip_retrigger_hierarchy(struct irq_data *data);
 extern void irq_chip_mask_parent(struct irq_data *data);
+extern void irq_chip_mask_ack_parent(struct irq_data *data);
 extern void irq_chip_unmask_parent(struct irq_data *data);
 extern void irq_chip_eoi_parent(struct irq_data *data);
 extern int irq_chip_set_affinity_parent(struct irq_data *data,
diff --git a/include/linux/irqdomain.h b/include/linux/irqdomain.h
index d2130dc7c0e6..61706b430907 100644
--- a/include/linux/irqdomain.h
+++ b/include/linux/irqdomain.h
@@ -420,6 +420,11 @@ int irq_domain_xlate_onetwocell(struct irq_domain *d, struct device_node *ctrlr,
 			const u32 *intspec, unsigned int intsize,
 			irq_hw_number_t *out_hwirq, unsigned int *out_type);
 
+int irq_domain_translate_twocell(struct irq_domain *d,
+				 struct irq_fwspec *fwspec,
+				 unsigned long *out_hwirq,
+				 unsigned int *out_type);
+
 /* IPI functions */
 int irq_reserve_ipi(struct irq_domain *domain, const struct cpumask *dest);
 int irq_destroy_ipi(unsigned int irq, const struct cpumask *dest);
diff --git a/include/linux/of_gpio.h b/include/linux/of_gpio.h
index 163b79ecd01a..f9737dea9d1f 100644
--- a/include/linux/of_gpio.h
+++ b/include/linux/of_gpio.h
@@ -28,6 +28,8 @@ enum of_gpio_flags {
 	OF_GPIO_SINGLE_ENDED = 0x2,
 	OF_GPIO_OPEN_DRAIN = 0x4,
 	OF_GPIO_TRANSITORY = 0x8,
+	OF_GPIO_PULL_UP = 0x10,
+	OF_GPIO_PULL_DOWN = 0x20,
 };
 
 #ifdef CONFIG_OF_GPIO
diff --git a/include/linux/platform_data/gpio/gpio-amd-fch.h b/include/linux/platform_data/gpio/gpio-amd-fch.h
new file mode 100644
index 000000000000..a867637e172d
--- /dev/null
+++ b/include/linux/platform_data/gpio/gpio-amd-fch.h
@@ -0,0 +1,46 @@
+/* SPDX-License-Identifier: GPL+ */
+
+/*
+ * AMD FCH gpio driver platform-data
+ *
+ * Copyright (C) 2018 metux IT consult
+ * Author: Enrico Weigelt <info@metux.net>
+ *
+ */
+
+#ifndef __LINUX_PLATFORM_DATA_GPIO_AMD_FCH_H
+#define __LINUX_PLATFORM_DATA_GPIO_AMD_FCH_H
+
+#define AMD_FCH_GPIO_DRIVER_NAME "gpio_amd_fch"
+
+/*
+ * gpio register index definitions
+ */
+#define AMD_FCH_GPIO_REG_GPIO49		0x40
+#define AMD_FCH_GPIO_REG_GPIO50		0x41
+#define AMD_FCH_GPIO_REG_GPIO51		0x42
+#define AMD_FCH_GPIO_REG_GPIO59_DEVSLP0	0x43
+#define AMD_FCH_GPIO_REG_GPIO57		0x44
+#define AMD_FCH_GPIO_REG_GPIO58		0x45
+#define AMD_FCH_GPIO_REG_GPIO59_DEVSLP1	0x46
+#define AMD_FCH_GPIO_REG_GPIO64		0x47
+#define AMD_FCH_GPIO_REG_GPIO68		0x48
+#define AMD_FCH_GPIO_REG_GPIO66_SPKR	0x5B
+#define AMD_FCH_GPIO_REG_GPIO71		0x4D
+#define AMD_FCH_GPIO_REG_GPIO32_GE1	0x59
+#define AMD_FCH_GPIO_REG_GPIO33_GE2	0x5A
+#define AMT_FCH_GPIO_REG_GEVT22		0x09
+
+/*
+ * struct amd_fch_gpio_pdata - GPIO chip platform data
+ * @gpio_num: number of entries
+ * @gpio_reg: array of gpio registers
+ * @gpio_names: array of gpio names
+ */
+struct amd_fch_gpio_pdata {
+	int			gpio_num;
+	int			*gpio_reg;
+	const char * const	*gpio_names;
+};
+
+#endif /* __LINUX_PLATFORM_DATA_GPIO_AMD_FCH_H */
diff --git a/include/linux/platform_device.h b/include/linux/platform_device.h
index 466a8d02e298..cc464850b71e 100644
--- a/include/linux/platform_device.h
+++ b/include/linux/platform_device.h
@@ -52,6 +52,9 @@ extern struct device platform_bus;
 extern void arch_setup_pdev_archdata(struct platform_device *);
 extern struct resource *platform_get_resource(struct platform_device *,
 					      unsigned int, unsigned int);
+extern void __iomem *
+devm_platform_ioremap_resource(struct platform_device *pdev,
+			       unsigned int index);
 extern int platform_get_irq(struct platform_device *, unsigned int);
 extern int platform_irq_count(struct platform_device *);
 extern struct resource *platform_get_resource_byname(struct platform_device *,