Merge tag 'gpio-v3.18-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio

Pull GPIO changes from Linus Walleij:
 "This is the bulk of GPIO changes for the v3.18 development cycle:

   - Increase the default ARCH_NR_GPIO from 256 to 512.  This was done
     to avoid having a custom <asm/gpio.h> header for the x86
     architecture - GPIO is custom and complicated enough as it is
     already! We want to move to a radix to store the descriptors going
     forward, and finally get rid of this fixed array size altogether.

   - Endgame patching of the gpio_remove() semantics initiated by
     Abdoulaye Berthe.  It is not accepted by the system that the
     removal of a GPIO chip fails during eg reboot or shutdown, and
     therefore the return value has now painfully been refactored away.
     For special cases like GPIO expanders on a hot-pluggable bus like
     USB, we may later add some gpiochip_try_remove() call, but for the
     cases we have now, return values are moot.

   - Some incremental refactoring of the gpiolib core and ACPI GPIO
     library for more descriptor usage.

   - Refactor the chained IRQ handler set-up method to handle also
     threaded, nested interrupts and set up the parent IRQ correctly.
     Switch STMPE and TC3589x drivers to use this registration method.

   - Add a .irq_not_threaded flag to the struct gpio_chip, so that also
     GPIO expanders that block but are still not using threaded IRQ
     handlers.

   - New drivers for the ARM64 X-Gene SoC GPIO controller.

   - The syscon GPIO driver has been improved to handle the "DSP GPIO"
     found on the TI Keystone 2 SoC:s.

   - ADNP driver switched to use gpiolib irqchip helpers.

   - Refactor the DWAPB driver to support being instantiated from and
     MFD cell (platform device).

   - Incremental feature improvement in the Zynq, MCP23S08, DWAPB, OMAP,
     Xilinx and Crystalcove drivers.

   - Various minor fixes"

* tag 'gpio-v3.18-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio: (52 commits)
  gpio: pch: Build context save/restore only for PM
  pinctrl: abx500: get rid of unused variable
  gpio: ks8695: fix 'else should follow close brace '}''
  gpio: stmpe: add verbose debug code
  gpio: stmpe: fix up interrupt enable logic
  gpio: staticize xway_stp_init()
  gpio: handle also nested irqchips in the chained handler set-up
  gpio: set parent irq on chained handlers
  gpiolib: irqchip: use irq_find_mapping while removing irqchip
  gpio: crystalcove: support virtual GPIO
  pinctrl: bcm281xx: make Kconfig dependency more strict
  gpio: kona: enable only on BCM_MOBILE or for compile testing
  gpio, bcm-kona, LLVMLinux: Remove use of __initconst
  gpio: Fix ngpio in gpio-xilinx driver
  gpio: dwapb: fix pointer to integer cast
  gpio: xgene: Remove unneeded #ifdef CONFIG_OF guard
  gpio: xgene: Remove unneeded forward declation for struct xgene_gpio
  gpio: xgene: Fix missing spin_lock_init()
  gpio: ks8695: fix switch case indentation
  gpiolib: add irq_not_threaded flag to gpio_chip
  ...

Documentation/devicetree/bindings/gpio/gpio-dsp-keystone.txt

@@ -0,0 +1,39 @@
+Keystone 2 DSP GPIO controller bindings
+
+HOST OS userland running on ARM can send interrupts to DSP cores using
+the DSP GPIO controller IP. It provides 28 IRQ signals per each DSP core.
+This is one of the component used by the IPC mechanism used on Keystone SOCs.
+
+For example TCI6638K2K SoC has 8 DSP GPIO controllers:
+ - 8 for C66x CorePacx CPUs 0-7
+
+Keystone 2 DSP GPIO controller has specific features:
+- each GPIO can be configured only as output pin;
+- setting GPIO value to 1 causes IRQ generation on target DSP core;
+- reading pin value returns 0 - if IRQ was handled or 1 - IRQ is still
+  pending.
+
+Required Properties:
+- compatible: should be "ti,keystone-dsp-gpio"
+- ti,syscon-dev: phandle/offset pair. The phandle to syscon used to
+  access device state control registers and the offset of device's specific
+  registers within device state control registers range.
+- gpio-controller: Marks the device node as a gpio controller.
+- #gpio-cells: Should be 2.
+
+Please refer to gpio.txt in this directory for details of the common GPIO
+bindings used by client devices.
+
+Example:
+	dspgpio0: keystone_dsp_gpio@02620240 {
+		compatible = "ti,keystone-dsp-gpio";
+		ti,syscon-dev = <&devctrl 0x240>;
+		gpio-controller;
+		#gpio-cells = <2>;
+	};
+
+	dsp0: dsp0 {
+		compatible = "linux,rproc-user";
+		...
+		kick-gpio = <&dspgpio0 27>;
+	};

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

@@ -0,0 +1,39 @@
+* NXP PCA953x I2C GPIO multiplexer
+
+Required properties:
+ - compatible: Has to contain one of the following:
+	nxp,pca9505
+	nxp,pca9534
+	nxp,pca9535
+	nxp,pca9536
+	nxp,pca9537
+	nxp,pca9538
+	nxp,pca9539
+	nxp,pca9554
+	nxp,pca9555
+	nxp,pca9556
+	nxp,pca9557
+	nxp,pca9574
+	nxp,pca9575
+	nxp,pca9698
+	maxim,max7310
+	maxim,max7312
+	maxim,max7313
+	maxim,max7315
+	ti,pca6107
+	ti,tca6408
+	ti,tca6416
+	ti,tca6424
+	exar,xra1202
+
+Example:
+
+
+	gpio@20 {
+		compatible = "nxp,pca9505";
+		reg = <0x20>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_pca9505>;
+		interrupt-parent = <&gpio3>;
+		interrupts = <23 IRQ_TYPE_LEVEL_LOW>;
+	};

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

@@ -0,0 +1,22 @@
+APM X-Gene SoC GPIO controller bindings
+
+This is a gpio controller that is part of the flash controller.
+This gpio controller controls a total of 48 gpios.
+
+Required properties:
+- compatible: "apm,xgene-gpio" for X-Gene GPIO controller
+- reg: Physical base address and size of the controller's registers
+- #gpio-cells: Should be two.
+	- first cell is the pin number
+	- second cell is used to specify the gpio polarity:
+		0 = active high
+		1 = active low
+- gpio-controller: Marks the device node as a GPIO controller.
+
+Example:
+	gpio0: gpio0@1701c000 {
+		compatible = "apm,xgene-gpio";
+		reg = <0x0 0x1701c000 0x0 0x40>;
+		gpio-controller;
+		#gpio-cells = <2>;
+	};

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

@@ -19,7 +19,7 @@ Required properties:
 - gpio-controller : Marks the device node as a gpio controller.
 - #gpio-cells : Should be one.  It is the pin number.
 
-Example:
+Example for a MMP platform:
 
 	gpio: gpio@d4019000 {
 		compatible = "marvell,mmp-gpio";
@@ -32,6 +32,19 @@ Example:
 		#interrupt-cells = <1>;
       };
 
+Example for a PXA3xx platform:
+
+	gpio: gpio@40e00000 {
+		compatible = "intel,pxa3xx-gpio";
+		reg = <0x40e00000 0x10000>;
+		interrupt-names = "gpio0", "gpio1", "gpio_mux";
+		interrupts = <8 9 10>;
+		gpio-controller;
+		#gpio-cells = <0x2>;
+		interrupt-controller;
+		#interrupt-cells = <0x2>;
+	};
+
 * Marvell Orion GPIO Controller
 
 Required properties:

Documentation/gpio/driver.txt

@@ -124,7 +124,8 @@ symbol:
 * gpiochip_set_chained_irqchip(): sets up a chained irq handler for a
   gpio_chip from a parent IRQ and passes the struct gpio_chip* as handler
   data. (Notice handler data, since the irqchip data is likely used by the
-  parent irqchip!) This is for the chained type of chip.
+  parent irqchip!) This is for the chained type of chip. This is also used
+  to set up a nested irqchip if NULL is passed as handler.
 
 To use the helpers please keep the following in mind:
 
@@ -178,7 +179,8 @@ does not help since it pins the module to the kernel forever (it calls
 try_module_get()). A GPIO driver can use the following functions instead
 to request and free descriptors without being pinned to the kernel forever.
 
-	int gpiochip_request_own_desc(struct gpio_desc *desc, const char *label)
+	struct gpio_desc *gpiochip_request_own_desc(struct gpio_desc *desc,
+						    const char *label)
 
 	void gpiochip_free_own_desc(struct gpio_desc *desc)
 

arch/arm/common/scoop.c

@@ -243,18 +243,12 @@ err_ioremap:
 static int scoop_remove(struct platform_device *pdev)
 {
 	struct scoop_dev *sdev = platform_get_drvdata(pdev);
-	int ret;
 
 	if (!sdev)
 		return -EINVAL;
 
-	if (sdev->gpio.base != -1) {
-		ret = gpiochip_remove(&sdev->gpio);
-		if (ret) {
-			dev_err(&pdev->dev, "Can't remove gpio chip: %d\n", ret);
-			return ret;
-		}
-	}
+	if (sdev->gpio.base != -1)
+		gpiochip_remove(&sdev->gpio);
 
 	platform_set_drvdata(pdev, NULL);
 	iounmap(sdev->base);

arch/mips/txx9/generic/setup.c

@@ -789,11 +789,11 @@ void __init txx9_iocled_init(unsigned long baseaddr,
 	if (platform_device_add(pdev))
 		goto out_pdev;
 	return;
+
 out_pdev:
 	platform_device_put(pdev);
 out_gpio:
-	if (gpiochip_remove(&iocled->chip))
-		return;
+	gpiochip_remove(&iocled->chip);
 out_unmap:
 	iounmap(iocled->mmioaddr);
 out_free:

arch/powerpc/platforms/83xx/mcu_mpc8349emitx.c

@@ -141,7 +141,8 @@ static int mcu_gpiochip_add(struct mcu *mcu)
 
 static int mcu_gpiochip_remove(struct mcu *mcu)
 {
-	return gpiochip_remove(&mcu->gc);
+	gpiochip_remove(&mcu->gc);
+	return 0;
 }
 
 static int mcu_probe(struct i2c_client *client, const struct i2c_device_id *id)

arch/sh/boards/mach-x3proto/gpio.c

@@ -128,10 +128,8 @@ int __init x3proto_gpio_setup(void)
 	return 0;
 
 err_irq:
-	ret = gpiochip_remove(&x3proto_gpio_chip);
-	if (unlikely(ret))
-		pr_err("Failed deregistering GPIO\n");
-
+	gpiochip_remove(&x3proto_gpio_chip);
+	ret = 0;
 err_gpio:
 	synchronize_irq(ilsel);
 

drivers/bcma/driver_gpio.c

@@ -255,5 +255,6 @@ int bcma_gpio_init(struct bcma_drv_cc *cc)
 int bcma_gpio_unregister(struct bcma_drv_cc *cc)
 {
 	bcma_gpio_irq_domain_exit(cc);
-	return gpiochip_remove(&cc->gpio);
+	gpiochip_remove(&cc->gpio);
+	return 0;
 }

drivers/gpio/Kconfig

@@ -136,7 +136,6 @@ config GPIO_DWAPB
 	tristate "Synopsys DesignWare APB GPIO driver"
 	select GPIO_GENERIC
 	select GENERIC_IRQ_CHIP
-	depends on OF_GPIO
 	help
 	  Say Y or M here to build support for the Synopsys DesignWare APB
 	  GPIO block.
@@ -334,6 +333,15 @@ config GPIO_TZ1090_PDC
 	help
 	  Say yes here to support Toumaz Xenif TZ1090 PDC GPIOs.
 
+config GPIO_XGENE
+	bool "APM X-Gene GPIO controller support"
+	depends on ARM64 && OF_GPIO
+	help
+	  This driver is to support the GPIO block within the APM X-Gene SoC
+	  platform's generic flash controller. The GPIO pins are muxed with
+	  the generic flash controller's address and data pins. Say yes
+	  here to enable the GFC GPIO functionality.
+
 config GPIO_XILINX
 	bool "Xilinx GPIO support"
 	depends on PPC_OF || MICROBLAZE || ARCH_ZYNQ
@@ -681,6 +689,7 @@ config GPIO_ADP5588_IRQ
 config GPIO_ADNP
 	tristate "Avionic Design N-bit GPIO expander"
 	depends on I2C && OF_GPIO
+	select GPIOLIB_IRQCHIP
 	help
 	  This option enables support for N GPIOs found on Avionic Design
 	  I2C GPIO expanders. The register space will be extended by powers
@@ -796,7 +805,6 @@ config GPIO_MAX7301
 
 config GPIO_MCP23S08
 	tristate "Microchip MCP23xxx I/O expander"
-	depends on OF_GPIO
 	depends on (SPI_MASTER && !I2C) || I2C
 	help
 	  SPI/I2C driver for Microchip MCP23S08/MCP23S17/MCP23008/MCP23017
@@ -880,7 +888,7 @@ config GPIO_MSIC
 
 config GPIO_BCM_KONA
 	bool "Broadcom Kona GPIO"
-	depends on OF_GPIO
+	depends on OF_GPIO && (ARCH_BCM_MOBILE || COMPILE_TEST)
 	help
 	  Turn on GPIO support for Broadcom "Kona" chips.
 

drivers/gpio/Makefile

@@ -101,6 +101,7 @@ obj-$(CONFIG_GPIO_VX855)	+= gpio-vx855.o
 obj-$(CONFIG_GPIO_WM831X)	+= gpio-wm831x.o
 obj-$(CONFIG_GPIO_WM8350)	+= gpio-wm8350.o
 obj-$(CONFIG_GPIO_WM8994)	+= gpio-wm8994.o
+obj-$(CONFIG_GPIO_XGENE)	+= gpio-xgene.o
 obj-$(CONFIG_GPIO_XILINX)	+= gpio-xilinx.o
 obj-$(CONFIG_GPIO_XTENSA)	+= gpio-xtensa.o
 obj-$(CONFIG_GPIO_ZEVIO)	+= gpio-zevio.o

drivers/gpio/gpio-adnp.c

@@ -6,10 +6,9 @@
  * published by the Free Software Foundation.
  */
 
-#include <linux/gpio.h>
+#include <linux/gpio/driver.h>
 #include <linux/i2c.h>
 #include <linux/interrupt.h>
-#include <linux/irqdomain.h>
 #include <linux/module.h>
 #include <linux/of_irq.h>
 #include <linux/seq_file.h>
@@ -27,8 +26,6 @@ struct adnp {
 	unsigned int reg_shift;
 
 	struct mutex i2c_lock;
-
-	struct irq_domain *domain;
 	struct mutex irq_lock;
 
 	u8 *irq_enable;
@@ -253,6 +250,7 @@ static void adnp_gpio_dbg_show(struct seq_file *s, struct gpio_chip *chip)
 static int adnp_gpio_setup(struct adnp *adnp, unsigned int num_gpios)
 {
 	struct gpio_chip *chip = &adnp->gpio;
+	int err;
 
 	adnp->reg_shift = get_count_order(num_gpios) - 3;
 
@@ -272,6 +270,10 @@ static int adnp_gpio_setup(struct adnp *adnp, unsigned int num_gpios)
 	chip->of_node = chip->dev->of_node;
 	chip->owner = THIS_MODULE;
 
+	err = gpiochip_add(chip);
+	if (err)
+		return err;
+
 	return 0;
 }
 
@@ -326,7 +328,8 @@ static irqreturn_t adnp_irq(int irq, void *data)
 
 		for_each_set_bit(bit, &pending, 8) {
 			unsigned int child_irq;
-			child_irq = irq_find_mapping(adnp->domain, base + bit);
+			child_irq = irq_find_mapping(adnp->gpio.irqdomain,
+						     base + bit);
 			handle_nested_irq(child_irq);
 		}
 	}
@@ -334,35 +337,32 @@ static irqreturn_t adnp_irq(int irq, void *data)
 	return IRQ_HANDLED;
 }
 
-static int adnp_gpio_to_irq(struct gpio_chip *chip, unsigned offset)
+static void adnp_irq_mask(struct irq_data *d)
 {
-	struct adnp *adnp = to_adnp(chip);
-	return irq_create_mapping(adnp->domain, offset);
-}
-
-static void adnp_irq_mask(struct irq_data *data)
-{
-	struct adnp *adnp = irq_data_get_irq_chip_data(data);
-	unsigned int reg = data->hwirq >> adnp->reg_shift;
-	unsigned int pos = data->hwirq & 7;
+	struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
+	struct adnp *adnp = to_adnp(gc);
+	unsigned int reg = d->hwirq >> adnp->reg_shift;
+	unsigned int pos = d->hwirq & 7;
 
 	adnp->irq_enable[reg] &= ~BIT(pos);
 }
 
-static void adnp_irq_unmask(struct irq_data *data)
+static void adnp_irq_unmask(struct irq_data *d)
 {
-	struct adnp *adnp = irq_data_get_irq_chip_data(data);
-	unsigned int reg = data->hwirq >> adnp->reg_shift;
-	unsigned int pos = data->hwirq & 7;
+	struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
+	struct adnp *adnp = to_adnp(gc);
+	unsigned int reg = d->hwirq >> adnp->reg_shift;
+	unsigned int pos = d->hwirq & 7;
 
 	adnp->irq_enable[reg] |= BIT(pos);
 }
 
-static int adnp_irq_set_type(struct irq_data *data, unsigned int type)
+static int adnp_irq_set_type(struct irq_data *d, unsigned int type)
 {
-	struct adnp *adnp = irq_data_get_irq_chip_data(data);
-	unsigned int reg = data->hwirq >> adnp->reg_shift;
-	unsigned int pos = data->hwirq & 7;
+	struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
+	struct adnp *adnp = to_adnp(gc);
+	unsigned int reg = d->hwirq >> adnp->reg_shift;
+	unsigned int pos = d->hwirq & 7;
 
 	if (type & IRQ_TYPE_EDGE_RISING)
 		adnp->irq_rise[reg] |= BIT(pos);
@@ -387,16 +387,18 @@ static int adnp_irq_set_type(struct irq_data *data, unsigned int type)
 	return 0;
 }
 
-static void adnp_irq_bus_lock(struct irq_data *data)
+static void adnp_irq_bus_lock(struct irq_data *d)
 {
-	struct adnp *adnp = irq_data_get_irq_chip_data(data);
+	struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
+	struct adnp *adnp = to_adnp(gc);
 
 	mutex_lock(&adnp->irq_lock);
 }
 
-static void adnp_irq_bus_unlock(struct irq_data *data)
+static void adnp_irq_bus_unlock(struct irq_data *d)
 {
-	struct adnp *adnp = irq_data_get_irq_chip_data(data);
+	struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
+	struct adnp *adnp = to_adnp(gc);
 	unsigned int num_regs = 1 << adnp->reg_shift, i;
 
 	mutex_lock(&adnp->i2c_lock);
@@ -408,26 +410,6 @@ static void adnp_irq_bus_unlock(struct irq_data *data)
 	mutex_unlock(&adnp->irq_lock);
 }
 
-static int adnp_irq_reqres(struct irq_data *data)
-{
-	struct adnp *adnp = irq_data_get_irq_chip_data(data);
-
-	if (gpio_lock_as_irq(&adnp->gpio, data->hwirq)) {
-		dev_err(adnp->gpio.dev,
-			"unable to lock HW IRQ %lu for IRQ\n",
-			data->hwirq);
-		return -EINVAL;
-	}
-	return 0;
-}
-
-static void adnp_irq_relres(struct irq_data *data)
-{
-	struct adnp *adnp = irq_data_get_irq_chip_data(data);
-
-	gpio_unlock_as_irq(&adnp->gpio, data->hwirq);
-}
-
 static struct irq_chip adnp_irq_chip = {
 	.name = "gpio-adnp",
 	.irq_mask = adnp_irq_mask,
@@ -435,29 +417,6 @@ static struct irq_chip adnp_irq_chip = {
 	.irq_set_type = adnp_irq_set_type,
 	.irq_bus_lock = adnp_irq_bus_lock,
 	.irq_bus_sync_unlock = adnp_irq_bus_unlock,
-	.irq_request_resources = adnp_irq_reqres,
-	.irq_release_resources = adnp_irq_relres,
-};
-
-static int adnp_irq_map(struct irq_domain *domain, unsigned int irq,
-			irq_hw_number_t hwirq)
-{
-	irq_set_chip_data(irq, domain->host_data);
-	irq_set_chip(irq, &adnp_irq_chip);
-	irq_set_nested_thread(irq, true);
-
-#ifdef CONFIG_ARM
-	set_irq_flags(irq, IRQF_VALID);
-#else
-	irq_set_noprobe(irq);
-#endif
-
-	return 0;
-}
-
-static const struct irq_domain_ops adnp_irq_domain_ops = {
-	.map = adnp_irq_map,
-	.xlate = irq_domain_xlate_twocell,
 };
 
 static int adnp_irq_setup(struct adnp *adnp)
@@ -503,35 +462,28 @@ static int adnp_irq_setup(struct adnp *adnp)
 		adnp->irq_enable[i] = 0x00;
 	}
 
-	adnp->domain = irq_domain_add_linear(chip->of_node, chip->ngpio,
-					     &adnp_irq_domain_ops, adnp);
-
-	err = request_threaded_irq(adnp->client->irq, NULL, adnp_irq,
-				   IRQF_TRIGGER_RISING | IRQF_ONESHOT,
-				   dev_name(chip->dev), adnp);
+	err = devm_request_threaded_irq(chip->dev, adnp->client->irq,
+					NULL, adnp_irq,
+					IRQF_TRIGGER_RISING | IRQF_ONESHOT,
+					dev_name(chip->dev), adnp);
 	if (err != 0) {
 		dev_err(chip->dev, "can't request IRQ#%d: %d\n",
 			adnp->client->irq, err);
 		return err;
 	}
 
-	chip->to_irq = adnp_gpio_to_irq;
-	return 0;
-}
-
-static void adnp_irq_teardown(struct adnp *adnp)
-{
-	unsigned int irq, i;
-
-	free_irq(adnp->client->irq, adnp);
-
-	for (i = 0; i < adnp->gpio.ngpio; i++) {
-		irq = irq_find_mapping(adnp->domain, i);
-		if (irq > 0)
-			irq_dispose_mapping(irq);
+	err = gpiochip_irqchip_add(chip,
+				   &adnp_irq_chip,
+				   0,
+				   handle_simple_irq,
+				   IRQ_TYPE_NONE);
+	if (err) {
+		dev_err(chip->dev,
+			"could not connect irqchip to gpiochip\n");
+		return err;
 	}
 
-	irq_domain_remove(adnp->domain);
+	return 0;
 }
 
 static int adnp_i2c_probe(struct i2c_client *client,
@@ -558,38 +510,25 @@ static int adnp_i2c_probe(struct i2c_client *client,
 	adnp->client = client;
 
 	err = adnp_gpio_setup(adnp, num_gpios);
-	if (err < 0)
+	if (err)
 		return err;
 
 	if (of_find_property(np, "interrupt-controller", NULL)) {
 		err = adnp_irq_setup(adnp);
-		if (err < 0)
-			goto teardown;
+		if (err)
+			return err;
 	}
 
-	err = gpiochip_add(&adnp->gpio);
-	if (err < 0)
-		goto teardown;
-
 	i2c_set_clientdata(client, adnp);
+
 	return 0;
-
-teardown:
-	if (of_find_property(np, "interrupt-controller", NULL))
-		adnp_irq_teardown(adnp);
-
-	return err;
 }
 
 static int adnp_i2c_remove(struct i2c_client *client)
 {
 	struct adnp *adnp = i2c_get_clientdata(client);
-	struct device_node *np = client->dev.of_node;
 
 	gpiochip_remove(&adnp->gpio);
-	if (of_find_property(np, "interrupt-controller", NULL))
-		adnp_irq_teardown(adnp);
-
 	return 0;
 }
 

drivers/gpio/gpio-bcm-kona.c

@@ -496,7 +496,7 @@ static struct irq_chip bcm_gpio_irq_chip = {
 	.irq_release_resources = bcm_kona_gpio_irq_relres,
 };
 
-static struct __initconst of_device_id bcm_kona_gpio_of_match[] = {
+static struct of_device_id const bcm_kona_gpio_of_match[] = {
 	{ .compatible = "brcm,kona-gpio" },
 	{}
 };

drivers/gpio/gpio-crystalcove.c

@@ -24,6 +24,7 @@
 #include <linux/mfd/intel_soc_pmic.h>
 
 #define CRYSTALCOVE_GPIO_NUM	16
+#define CRYSTALCOVE_VGPIO_NUM	94
 
 #define UPDATE_IRQ_TYPE		BIT(0)
 #define UPDATE_IRQ_MASK		BIT(1)
@@ -130,6 +131,9 @@ static int crystalcove_gpio_dir_in(struct gpio_chip *chip, unsigned gpio)
 {
 	struct crystalcove_gpio *cg = to_cg(chip);
 
+	if (gpio > CRYSTALCOVE_VGPIO_NUM)
+		return 0;
+
 	return regmap_write(cg->regmap, to_reg(gpio, CTRL_OUT),
 			    CTLO_INPUT_SET);
 }
@@ -139,6 +143,9 @@ static int crystalcove_gpio_dir_out(struct gpio_chip *chip, unsigned gpio,
 {
 	struct crystalcove_gpio *cg = to_cg(chip);
 
+	if (gpio > CRYSTALCOVE_VGPIO_NUM)
+		return 0;
+
 	return regmap_write(cg->regmap, to_reg(gpio, CTRL_OUT),
 			    CTLO_OUTPUT_SET | value);
 }
@@ -149,6 +156,9 @@ static int crystalcove_gpio_get(struct gpio_chip *chip, unsigned gpio)
 	int ret;
 	unsigned int val;
 
+	if (gpio > CRYSTALCOVE_VGPIO_NUM)
+		return 0;
+
 	ret = regmap_read(cg->regmap, to_reg(gpio, CTRL_IN), &val);
 	if (ret)
 		return ret;
@@ -161,6 +171,9 @@ static void crystalcove_gpio_set(struct gpio_chip *chip,
 {
 	struct crystalcove_gpio *cg = to_cg(chip);
 
+	if (gpio > CRYSTALCOVE_VGPIO_NUM)
+		return;
+
 	if (value)
 		regmap_update_bits(cg->regmap, to_reg(gpio, CTRL_OUT), 1, 1);
 	else
@@ -256,7 +269,7 @@ static irqreturn_t crystalcove_gpio_irq_handler(int irq, void *data)
 
 	pending = p0 | p1 << 8;
 
-	for (gpio = 0; gpio < cg->chip.ngpio; gpio++) {
+	for (gpio = 0; gpio < CRYSTALCOVE_GPIO_NUM; gpio++) {
 		if (pending & BIT(gpio)) {
 			virq = irq_find_mapping(cg->chip.irqdomain, gpio);
 			generic_handle_irq(virq);
@@ -273,7 +286,7 @@ static void crystalcove_gpio_dbg_show(struct seq_file *s,
 	int gpio, offset;
 	unsigned int ctlo, ctli, mirqs0, mirqsx, irq;
 
-	for (gpio = 0; gpio < cg->chip.ngpio; gpio++) {
+	for (gpio = 0; gpio < CRYSTALCOVE_GPIO_NUM; gpio++) {
 		regmap_read(cg->regmap, to_reg(gpio, CTRL_OUT), &ctlo);
 		regmap_read(cg->regmap, to_reg(gpio, CTRL_IN), &ctli);
 		regmap_read(cg->regmap, gpio < 8 ? MGPIO0IRQS0 : MGPIO1IRQS0,
@@ -320,7 +333,7 @@ static int crystalcove_gpio_probe(struct platform_device *pdev)
 	cg->chip.get = crystalcove_gpio_get;
 	cg->chip.set = crystalcove_gpio_set;
 	cg->chip.base = -1;
-	cg->chip.ngpio = CRYSTALCOVE_GPIO_NUM;
+	cg->chip.ngpio = CRYSTALCOVE_VGPIO_NUM;
 	cg->chip.can_sleep = true;
 	cg->chip.dev = dev;
 	cg->chip.dbg_show = crystalcove_gpio_dbg_show;
@@ -346,7 +359,7 @@ static int crystalcove_gpio_probe(struct platform_device *pdev)
 	return 0;
 
 out_remove_gpio:
-	WARN_ON(gpiochip_remove(&cg->chip));
+	gpiochip_remove(&cg->chip);
 	return retval;
 }
 
@@ -354,14 +367,11 @@ static int crystalcove_gpio_remove(struct platform_device *pdev)
 {
 	struct crystalcove_gpio *cg = platform_get_drvdata(pdev);
 	int irq = platform_get_irq(pdev, 0);
-	int err;
-
-	err = gpiochip_remove(&cg->chip);
 
+	gpiochip_remove(&cg->chip);
 	if (irq >= 0)
 		free_irq(irq, cg);
-
-	return err;
+	return 0;
 }
 
 static struct platform_driver crystalcove_gpio_driver = {

drivers/gpio/gpio-cs5535.c

@@ -201,7 +201,8 @@ EXPORT_SYMBOL_GPL(cs5535_gpio_setup_event);
 
 static int chip_gpio_request(struct gpio_chip *c, unsigned offset)
 {
-	struct cs5535_gpio_chip *chip = (struct cs5535_gpio_chip *) c;
+	struct cs5535_gpio_chip *chip =
+		container_of(c, struct cs5535_gpio_chip, chip);
 	unsigned long flags;
 
 	spin_lock_irqsave(&chip->lock, flags);
@@ -241,7 +242,8 @@ static void chip_gpio_set(struct gpio_chip *chip, unsigned offset, int val)
 
 static int chip_direction_input(struct gpio_chip *c, unsigned offset)
 {
-	struct cs5535_gpio_chip *chip = (struct cs5535_gpio_chip *) c;
+	struct cs5535_gpio_chip *chip =
+		container_of(c, struct cs5535_gpio_chip, chip);
 	unsigned long flags;
 
 	spin_lock_irqsave(&chip->lock, flags);
@@ -254,7 +256,8 @@ static int chip_direction_input(struct gpio_chip *c, unsigned offset)
 
 static int chip_direction_output(struct gpio_chip *c, unsigned offset, int val)
 {
-	struct cs5535_gpio_chip *chip = (struct cs5535_gpio_chip *) c;
+	struct cs5535_gpio_chip *chip =
+		container_of(c, struct cs5535_gpio_chip, chip);
 	unsigned long flags;
 
 	spin_lock_irqsave(&chip->lock, flags);

drivers/gpio/gpio-ks8695.c

@@ -265,29 +265,27 @@ static int ks8695_gpio_show(struct seq_file *s, void *unused)
 				seq_printf(s, "EXT%i ", i);
 
 				switch ((ctrl & intmask[i]) >> (4 * i)) {
-					case IOPC_TM_LOW:
-						seq_printf(s, "(Low)");		break;
-					case IOPC_TM_HIGH:
-						seq_printf(s, "(High)");	break;
-					case IOPC_TM_RISING:
-						seq_printf(s, "(Rising)");	break;
-					case IOPC_TM_FALLING:
-						seq_printf(s, "(Falling)");	break;
-					case IOPC_TM_EDGE:
-						seq_printf(s, "(Edges)");	break;
+				case IOPC_TM_LOW:
+					seq_printf(s, "(Low)");		break;
+				case IOPC_TM_HIGH:
+					seq_printf(s, "(High)");	break;
+				case IOPC_TM_RISING:
+					seq_printf(s, "(Rising)");	break;
+				case IOPC_TM_FALLING:
+					seq_printf(s, "(Falling)");	break;
+				case IOPC_TM_EDGE:
+					seq_printf(s, "(Edges)");	break;
 				}
-			}
-			else
+			} else
 				seq_printf(s, "GPIO\t");
-		}
-		else if (i <= KS8695_GPIO_5) {
+		} else if (i <= KS8695_GPIO_5) {
 			if (ctrl & enable[i])
 				seq_printf(s, "TOUT%i\t", i - KS8695_GPIO_4);
 			else
 				seq_printf(s, "GPIO\t");
-		}
-		else
+		} else {
 			seq_printf(s, "GPIO\t");
+		}
 
 		seq_printf(s, "\t");
 

drivers/gpio/gpio-mcp23s08.c

@@ -479,7 +479,7 @@ static int mcp23s08_irq_setup(struct mcp23s08 *mcp)
 
 	mutex_init(&mcp->irq_lock);
 
-	mcp->irq_domain = irq_domain_add_linear(chip->of_node, chip->ngpio,
+	mcp->irq_domain = irq_domain_add_linear(chip->dev->of_node, chip->ngpio,
 						&irq_domain_simple_ops, mcp);
 	if (!mcp->irq_domain)
 		return -ENODEV;
@@ -581,7 +581,7 @@ done:
 
 static int mcp23s08_probe_one(struct mcp23s08 *mcp, struct device *dev,
 			      void *data, unsigned addr, unsigned type,
-			      unsigned base, unsigned pullups)
+			      struct mcp23s08_platform_data *pdata, int cs)
 {
 	int status;
 	bool mirror = false;
@@ -635,7 +635,7 @@ static int mcp23s08_probe_one(struct mcp23s08 *mcp, struct device *dev,
 		return -EINVAL;
 	}
 
-	mcp->chip.base = base;
+	mcp->chip.base = pdata->base;
 	mcp->chip.can_sleep = true;
 	mcp->chip.dev = dev;
 	mcp->chip.owner = THIS_MODULE;
@@ -648,11 +648,9 @@ static int mcp23s08_probe_one(struct mcp23s08 *mcp, struct device *dev,
 	if (status < 0)
 		goto fail;
 
-	mcp->irq_controller = of_property_read_bool(mcp->chip.of_node,
-						"interrupt-controller");
+	mcp->irq_controller = pdata->irq_controller;
 	if (mcp->irq && mcp->irq_controller && (type == MCP_TYPE_017))
-		mirror = of_property_read_bool(mcp->chip.of_node,
-						"microchip,irq-mirror");
+		mirror = pdata->mirror;
 
 	if ((status & IOCON_SEQOP) || !(status & IOCON_HAEN) || mirror) {
 		/* mcp23s17 has IOCON twice, make sure they are in sync */
@@ -668,7 +666,7 @@ static int mcp23s08_probe_one(struct mcp23s08 *mcp, struct device *dev,
 	}
 
 	/* configure ~100K pullups */
-	status = mcp->ops->write(mcp, MCP_GPPU, pullups);
+	status = mcp->ops->write(mcp, MCP_GPPU, pdata->chip[cs].pullups);
 	if (status < 0)
 		goto fail;
 
@@ -768,25 +766,29 @@ MODULE_DEVICE_TABLE(of, mcp23s08_i2c_of_match);
 static int mcp230xx_probe(struct i2c_client *client,
 				    const struct i2c_device_id *id)
 {
-	struct mcp23s08_platform_data *pdata;
+	struct mcp23s08_platform_data *pdata, local_pdata;
 	struct mcp23s08 *mcp;
-	int status, base, pullups;
+	int status;
 	const struct of_device_id *match;
 
 	match = of_match_device(of_match_ptr(mcp23s08_i2c_of_match),
 					&client->dev);
-	pdata = dev_get_platdata(&client->dev);
-	if (match || !pdata) {
-		base = -1;
-		pullups = 0;
+	if (match) {
+		pdata = &local_pdata;
+		pdata->base = -1;
+		pdata->chip[0].pullups = 0;
+		pdata->irq_controller =	of_property_read_bool(
+					client->dev.of_node,
+					"interrupt-controller");
+		pdata->mirror = of_property_read_bool(client->dev.of_node,
+						      "microchip,irq-mirror");
 		client->irq = irq_of_parse_and_map(client->dev.of_node, 0);
 	} else {
-		if (!gpio_is_valid(pdata->base)) {
+		pdata = dev_get_platdata(&client->dev);
+		if (!pdata || !gpio_is_valid(pdata->base)) {
 			dev_dbg(&client->dev, "invalid platform data\n");
 			return -EINVAL;
 		}
-		base = pdata->base;
-		pullups = pdata->chip[0].pullups;
 	}
 
 	mcp = kzalloc(sizeof(*mcp), GFP_KERNEL);
@@ -795,7 +797,7 @@ static int mcp230xx_probe(struct i2c_client *client,
 
 	mcp->irq = client->irq;
 	status = mcp23s08_probe_one(mcp, &client->dev, client, client->addr,
-				    id->driver_data, base, pullups);
+				    id->driver_data, pdata, 0);
 	if (status)
 		goto fail;
 
@@ -863,14 +865,12 @@ static void mcp23s08_i2c_exit(void) { }
 
 static int mcp23s08_probe(struct spi_device *spi)
 {
-	struct mcp23s08_platform_data	*pdata;
+	struct mcp23s08_platform_data	*pdata, local_pdata;
 	unsigned			addr;
 	int				chips = 0;
 	struct mcp23s08_driver_data	*data;
 	int				status, type;
-	unsigned			base = -1,
-					ngpio = 0,
-					pullups[ARRAY_SIZE(pdata->chip)];
+	unsigned			ngpio = 0;
 	const struct			of_device_id *match;
 	u32				spi_present_mask = 0;
 
@@ -893,11 +893,18 @@ static int mcp23s08_probe(struct spi_device *spi)
 			return -ENODEV;
 		}
 
+		pdata = &local_pdata;
+		pdata->base = -1;
 		for (addr = 0; addr < ARRAY_SIZE(pdata->chip); addr++) {
-			pullups[addr] = 0;
+			pdata->chip[addr].pullups = 0;
 			if (spi_present_mask & (1 << addr))
 				chips++;
 		}
+		pdata->irq_controller =	of_property_read_bool(
+					spi->dev.of_node,
+					"interrupt-controller");
+		pdata->mirror = of_property_read_bool(spi->dev.of_node,
+						      "microchip,irq-mirror");
 	} else {
 		type = spi_get_device_id(spi)->driver_data;
 		pdata = dev_get_platdata(&spi->dev);
@@ -917,10 +924,7 @@ static int mcp23s08_probe(struct spi_device *spi)
 				return -EINVAL;
 			}
 			spi_present_mask |= 1 << addr;
-			pullups[addr] = pdata->chip[addr].pullups;
 		}
-
-		base = pdata->base;
 	}
 
 	if (!chips)
@@ -938,13 +942,13 @@ static int mcp23s08_probe(struct spi_device *spi)
 		chips--;
 		data->mcp[addr] = &data->chip[chips];
 		status = mcp23s08_probe_one(data->mcp[addr], &spi->dev, spi,
-					    0x40 | (addr << 1), type, base,
-					    pullups[addr]);
+					    0x40 | (addr << 1), type, pdata,
+					    addr);
 		if (status < 0)
 			goto fail;
 
-		if (base != -1)
-			base += (type == MCP_TYPE_S17) ? 16 : 8;
+		if (pdata->base != -1)
+			pdata->base += (type == MCP_TYPE_S17) ? 16 : 8;
 		ngpio += (type == MCP_TYPE_S17) ? 16 : 8;
 	}
 	data->ngpio = ngpio;

drivers/gpio/gpio-omap.c

@@ -857,16 +857,6 @@ static void omap_gpio_unmask_irq(struct irq_data *d)
 	spin_unlock_irqrestore(&bank->lock, flags);
 }
 
-static struct irq_chip gpio_irq_chip = {
-	.name		= "GPIO",
-	.irq_shutdown	= omap_gpio_irq_shutdown,
-	.irq_ack	= omap_gpio_ack_irq,
-	.irq_mask	= omap_gpio_mask_irq,
-	.irq_unmask	= omap_gpio_unmask_irq,
-	.irq_set_type	= omap_gpio_irq_type,
-	.irq_set_wake	= omap_gpio_wake_enable,
-};
-
 /*---------------------------------------------------------------------*/
 
 static int omap_mpuio_suspend_noirq(struct device *dev)
@@ -1088,7 +1078,7 @@ omap_mpuio_alloc_gc(struct gpio_bank *bank, unsigned int irq_start,
 			       IRQ_NOREQUEST | IRQ_NOPROBE, 0);
 }
 
-static int omap_gpio_chip_init(struct gpio_bank *bank)
+static int omap_gpio_chip_init(struct gpio_bank *bank, struct irq_chip *irqc)
 {
 	int j;
 	static int gpio;
@@ -1137,17 +1127,17 @@ static int omap_gpio_chip_init(struct gpio_bank *bank)
 	}
 #endif
 
-	ret = gpiochip_irqchip_add(&bank->chip, &gpio_irq_chip,
+	ret = gpiochip_irqchip_add(&bank->chip, irqc,
 				   irq_base, omap_gpio_irq_handler,
 				   IRQ_TYPE_NONE);
 
 	if (ret) {
 		dev_err(bank->dev, "Couldn't add irqchip to gpiochip %d\n", ret);
-		ret = gpiochip_remove(&bank->chip);
+		gpiochip_remove(&bank->chip);
 		return -ENODEV;
 	}
 
-	gpiochip_set_chained_irqchip(&bank->chip, &gpio_irq_chip,
+	gpiochip_set_chained_irqchip(&bank->chip, irqc,
 				     bank->irq, omap_gpio_irq_handler);
 
 	for (j = 0; j < bank->width; j++) {
@@ -1172,6 +1162,7 @@ static int omap_gpio_probe(struct platform_device *pdev)
 	const struct omap_gpio_platform_data *pdata;
 	struct resource *res;
 	struct gpio_bank *bank;
+	struct irq_chip *irqc;
 	int ret;
 
 	match = of_match_device(of_match_ptr(omap_gpio_match), dev);
@@ -1186,6 +1177,18 @@ static int omap_gpio_probe(struct platform_device *pdev)
 		return -ENOMEM;
 	}
 
+	irqc = devm_kzalloc(dev, sizeof(*irqc), GFP_KERNEL);
+	if (!irqc)
+		return -ENOMEM;
+
+	irqc->irq_shutdown = omap_gpio_irq_shutdown,
+	irqc->irq_ack = omap_gpio_ack_irq,
+	irqc->irq_mask = omap_gpio_mask_irq,
+	irqc->irq_unmask = omap_gpio_unmask_irq,
+	irqc->irq_set_type = omap_gpio_irq_type,
+	irqc->irq_set_wake = omap_gpio_wake_enable,
+	irqc->name = dev_name(&pdev->dev);
+
 	res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
 	if (unlikely(!res)) {
 		dev_err(dev, "Invalid IRQ resource\n");
@@ -1241,7 +1244,7 @@ static int omap_gpio_probe(struct platform_device *pdev)
 
 	omap_gpio_mod_init(bank);
 
-	ret = omap_gpio_chip_init(bank);
+	ret = omap_gpio_chip_init(bank, irqc);
 	if (ret)
 		return ret;