Linux-libre 4.7.1-gnupck-4.7.1-gnu

51 files changed, 1377 insertions, 1146 deletions

diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
index 5f3429f0b..d7860614f 100644
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -33,7 +33,7 @@ config ARCH_REQUIRE_GPIOLIB
 
 menuconfig GPIOLIB
 	bool "GPIO Support"
-	depends on ARCH_WANT_OPTIONAL_GPIOLIB || ARCH_REQUIRE_GPIOLIB
+	select ANON_INODES
 	help
 	  This enables GPIO support through the generic GPIO library.
 	  You only need to enable this, if you also want to enable
@@ -122,6 +122,7 @@ config GPIO_ALTERA
 config GPIO_AMDPT
 	tristate "AMD Promontory GPIO support"
 	depends on ACPI
+	select GPIO_GENERIC
 	help
 	  driver for GPIO functionality on Promontory IOHub
 	  Require ACPI ASL code to enumerate as a platform device.
@@ -303,6 +304,7 @@ config GPIO_MPC8XXX
 		   FSL_SOC_BOOKE || PPC_86xx || ARCH_LAYERSCAPE || ARM || \
 		   COMPILE_TEST
 	select GPIO_GENERIC
+	select IRQ_DOMAIN
 	help
 	  Say Y here if you're going to use hardware that connects to the
 	  MPC512x/831x/834x/837x/8572/8610/QorIQ GPIOs.
@@ -399,6 +401,14 @@ config GPIO_TB10X
 	select GENERIC_IRQ_CHIP
 	select OF_GPIO
 
+config GPIO_TEGRA
+	bool "NVIDIA Tegra GPIO support"
+	default ARCH_TEGRA
+	depends on ARCH_TEGRA || COMPILE_TEST
+	depends on OF
+	help
+	  Say yes here to support GPIO pins on NVIDIA Tegra SoCs.
+
 config GPIO_TS4800
 	tristate "TS-4800 DIO blocks and compatibles"
 	depends on OF_GPIO
@@ -473,7 +483,7 @@ config GPIO_XILINX
 
 config GPIO_XLP
 	tristate "Netlogic XLP GPIO support"
-	depends on CPU_XLP && OF_GPIO
+	depends on OF_GPIO && (CPU_XLP || ARCH_VULCAN || COMPILE_TEST)
 	select GPIOLIB_IRQCHIP
 	help
 	  This driver provides support for GPIO interface on Netlogic XLP MIPS64
@@ -510,6 +520,13 @@ config GPIO_ZX
 	help
 	  Say yes here to support the GPIO device on ZTE ZX SoCs.
 
+config GPIO_LOONGSON1
+	tristate "Loongson1 GPIO support"
+	depends on MACH_LOONGSON32
+	select GPIO_GENERIC
+	help
+	  Say Y or M here to support GPIO on Loongson1 SoCs.
+
 endmenu
 
 menu "Port-mapped I/O GPIO drivers"
@@ -517,30 +534,35 @@ menu "Port-mapped I/O GPIO drivers"
 
 config GPIO_104_DIO_48E
 	tristate "ACCES 104-DIO-48E GPIO support"
+	depends on ISA_BUS_API
 	select GPIOLIB_IRQCHIP
 	help
-	  Enables GPIO support for the ACCES 104-DIO-48E family. The base port
-	  address for the device may be configured via the dio_48e_base module
-	  parameter. The interrupt line number for the device may be configured
-	  via the dio_48e_irq module parameter.
+	  Enables GPIO support for the ACCES 104-DIO-48E series (104-DIO-48E,
+	  104-DIO-24E). The base port addresses for the devices may be
+	  configured via the base module parameter. The interrupt line numbers
+	  for the devices may be configured via the irq module parameter.
 
 config GPIO_104_IDIO_16
 	tristate "ACCES 104-IDIO-16 GPIO support"
+	depends on ISA_BUS_API
 	select GPIOLIB_IRQCHIP
 	help
-	  Enables GPIO support for the ACCES 104-IDIO-16 family. The base port
-	  address for the device may be set via the idio_16_base module
-	  parameter. The interrupt line number for the device may be set via the
-	  idio_16_irq module parameter.
+	  Enables GPIO support for the ACCES 104-IDIO-16 family (104-IDIO-16,
+	  104-IDIO-16E, 104-IDO-16, 104-IDIO-8, 104-IDIO-8E, 104-IDO-8). The
+	  base port addresses for the devices may be configured via the base
+	  module parameter. The interrupt line numbers for the devices may be
+	  configured via the irq module parameter.
 
 config GPIO_104_IDI_48
 	tristate "ACCES 104-IDI-48 GPIO support"
+	depends on ISA_BUS_API
 	select GPIOLIB_IRQCHIP
 	help
-	  Enables GPIO support for the ACCES 104-IDI-48 family. The base port
-	  address for the device may be configured via the idi_48_base module
-	  parameter. The interrupt line number for the device may be configured
-	  via the idi_48_irq module parameter.
+	  Enables GPIO support for the ACCES 104-IDI-48 family (104-IDI-48A,
+	  104-IDI-48AC, 104-IDI-48B, 104-IDI-48BC). The base port addresses for
+	  the devices may be configured via the base module parameter. The
+	  interrupt line numbers for the devices may be configured via the irq
+	  module parameter.
 
 config GPIO_F7188X
 	tristate "F71869, F71869A, F71882FG, F71889F and F81866 GPIO support"
@@ -557,7 +579,7 @@ config GPIO_IT87
 	  Say yes here to support GPIO functionality of IT87xx Super I/O chips.
 
 	  This driver is tested with ITE IT8728 and IT8732 Super I/O chips, and
-	  supports the IT8761E Super I/O chip as well.
+	  supports the IT8761E, IT8620E and IT8628E Super I/O chip as well.
 
 	  To compile this driver as a module, choose M here: the module will
 	  be called gpio_it87
@@ -609,12 +631,13 @@ config GPIO_TS5500
 
 config GPIO_WS16C48
 	tristate "WinSystems WS16C48 GPIO support"
+	depends on ISA_BUS_API
 	select GPIOLIB_IRQCHIP
 	help
-	  Enables GPIO support for the WinSystems WS16C48. The base port address
-	  for the device may be configured via the ws16c48_base module
-	  parameter. The interrupt line number for the device may be configured
-	  via the ws16c48_irq module parameter.
+	  Enables GPIO support for the WinSystems WS16C48. The base port
+	  addresses for the devices may be configured via the base module
+	  parameter. The interrupt line numbers for the devices may be
+	  configured via the irq module parameter.
 
 endmenu
 
@@ -1091,6 +1114,7 @@ menu "SPI or I2C GPIO expanders"
 
 config GPIO_MCP23S08
 	tristate "Microchip MCP23xxx I/O expander"
+	select GPIOLIB_IRQCHIP
 	help
 	  SPI/I2C driver for Microchip MCP23S08/MCP23S17/MCP23008/MCP23017
 	  I/O expanders.
diff --git a/drivers/gpio/Makefile b/drivers/gpio/Makefile
index 1e0b74f3b..991598ea3 100644
--- a/drivers/gpio/Makefile
+++ b/drivers/gpio/Makefile
@@ -12,6 +12,9 @@ obj-$(CONFIG_GPIO_ACPI)		+= gpiolib-acpi.o
 # Device drivers. Generally keep list sorted alphabetically
 obj-$(CONFIG_GPIO_GENERIC)	+= gpio-generic.o
 
+# directly supported by gpio-generic
+gpio-generic-$(CONFIG_GPIO_GENERIC)	+= gpio-mmio.o
+
 obj-$(CONFIG_GPIO_104_DIO_48E)	+= gpio-104-dio-48e.o
 obj-$(CONFIG_GPIO_104_IDIO_16)	+= gpio-104-idio-16.o
 obj-$(CONFIG_GPIO_104_IDI_48)	+= gpio-104-idi-48.o
@@ -95,7 +98,7 @@ obj-$(CONFIG_GPIO_SX150X)	+= gpio-sx150x.o
 obj-$(CONFIG_GPIO_SYSCON)	+= gpio-syscon.o
 obj-$(CONFIG_GPIO_TB10X)	+= gpio-tb10x.o
 obj-$(CONFIG_GPIO_TC3589X)	+= gpio-tc3589x.o
-obj-$(CONFIG_ARCH_TEGRA)	+= gpio-tegra.o
+obj-$(CONFIG_GPIO_TEGRA)	+= gpio-tegra.o
 obj-$(CONFIG_GPIO_TIMBERDALE)	+= gpio-timberdale.o
 obj-$(CONFIG_GPIO_PALMAS)	+= gpio-palmas.o
 obj-$(CONFIG_GPIO_TPIC2810)	+= gpio-tpic2810.o
@@ -127,3 +130,4 @@ obj-$(CONFIG_GPIO_XTENSA)	+= gpio-xtensa.o
 obj-$(CONFIG_GPIO_ZEVIO)	+= gpio-zevio.o
 obj-$(CONFIG_GPIO_ZYNQ)		+= gpio-zynq.o
 obj-$(CONFIG_GPIO_ZX)		+= gpio-zx.o
+obj-$(CONFIG_GPIO_LOONGSON1)	+= gpio-loongson1.o
diff --git a/drivers/gpio/gpio-104-dio-48e.c b/drivers/gpio/gpio-104-dio-48e.c
index 448a90308..fcf776971 100644
--- a/drivers/gpio/gpio-104-dio-48e.c
+++ b/drivers/gpio/gpio-104-dio-48e.c
@@ -1,5 +1,5 @@
 /*
- * GPIO driver for the ACCES 104-DIO-48E
+ * GPIO driver for the ACCES 104-DIO-48E series
  * Copyright (C) 2016 William Breathitt Gray
  *
  * This program is free software; you can redistribute it and/or modify
@@ -10,6 +10,9 @@
  * WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * General Public License for more details.
+ *
+ * This driver supports the following ACCES devices: 104-DIO-48E and
+ * 104-DIO-24E.
  */
 #include <linux/bitops.h>
 #include <linux/device.h>
@@ -19,18 +22,23 @@
 #include <linux/ioport.h>
 #include <linux/interrupt.h>
 #include <linux/irqdesc.h>
+#include <linux/isa.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/moduleparam.h>
-#include <linux/platform_device.h>
 #include <linux/spinlock.h>
 
-static unsigned dio_48e_base;
-module_param(dio_48e_base, uint, 0);
-MODULE_PARM_DESC(dio_48e_base, "ACCES 104-DIO-48E base address");
-static unsigned dio_48e_irq;
-module_param(dio_48e_irq, uint, 0);
-MODULE_PARM_DESC(dio_48e_irq, "ACCES 104-DIO-48E interrupt line number");
+#define DIO48E_EXTENT 16
+#define MAX_NUM_DIO48E max_num_isa_dev(DIO48E_EXTENT)
+
+static unsigned int base[MAX_NUM_DIO48E];
+static unsigned int num_dio48e;
+module_param_array(base, uint, &num_dio48e, 0);
+MODULE_PARM_DESC(base, "ACCES 104-DIO-48E base addresses");
+
+static unsigned int irq[MAX_NUM_DIO48E];
+module_param_array(irq, uint, NULL, 0);
+MODULE_PARM_DESC(irq, "ACCES 104-DIO-48E interrupt line numbers");
 
 /**
  * struct dio48e_gpio - GPIO device private data structure
@@ -67,7 +75,7 @@ static int dio48e_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
 {
 	struct dio48e_gpio *const dio48egpio = gpiochip_get_data(chip);
 	const unsigned io_port = offset / 8;
-	const unsigned control_port = io_port / 2;
+	const unsigned int control_port = io_port / 3;
 	const unsigned control_addr = dio48egpio->base + 3 + control_port*4;
 	unsigned long flags;
 	unsigned control;
@@ -107,7 +115,7 @@ static int dio48e_gpio_direction_output(struct gpio_chip *chip, unsigned offset,
 {
 	struct dio48e_gpio *const dio48egpio = gpiochip_get_data(chip);
 	const unsigned io_port = offset / 8;
-	const unsigned control_port = io_port / 2;
+	const unsigned int control_port = io_port / 3;
 	const unsigned mask = BIT(offset % 8);
 	const unsigned control_addr = dio48egpio->base + 3 + control_port*4;
 	const unsigned out_port = (io_port > 2) ? io_port + 1 : io_port;
@@ -294,23 +302,19 @@ static irqreturn_t dio48e_irq_handler(int irq, void *dev_id)
 	return IRQ_HANDLED;
 }
 
-static int __init dio48e_probe(struct platform_device *pdev)
+static int dio48e_probe(struct device *dev, unsigned int id)
 {
-	struct device *dev = &pdev->dev;
 	struct dio48e_gpio *dio48egpio;
-	const unsigned base = dio_48e_base;
-	const unsigned extent = 16;
 	const char *const name = dev_name(dev);
 	int err;
-	const unsigned irq = dio_48e_irq;
 
 	dio48egpio = devm_kzalloc(dev, sizeof(*dio48egpio), GFP_KERNEL);
 	if (!dio48egpio)
 		return -ENOMEM;
 
-	if (!devm_request_region(dev, base, extent, name)) {
+	if (!devm_request_region(dev, base[id], DIO48E_EXTENT, name)) {
 		dev_err(dev, "Unable to lock port addresses (0x%X-0x%X)\n",
-			base, base + extent);
+			base[id], base[id] + DIO48E_EXTENT);
 		return -EBUSY;
 	}
 
@@ -324,8 +328,8 @@ static int __init dio48e_probe(struct platform_device *pdev)
 	dio48egpio->chip.direction_output = dio48e_gpio_direction_output;
 	dio48egpio->chip.get = dio48e_gpio_get;
 	dio48egpio->chip.set = dio48e_gpio_set;
-	dio48egpio->base = base;
-	dio48egpio->irq = irq;
+	dio48egpio->base = base[id];
+	dio48egpio->irq = irq[id];
 
 	spin_lock_init(&dio48egpio->lock);
 
@@ -338,19 +342,19 @@ static int __init dio48e_probe(struct platform_device *pdev)
 	}
 
 	/* initialize all GPIO as output */
-	outb(0x80, base + 3);
-	outb(0x00, base);
-	outb(0x00, base + 1);
-	outb(0x00, base + 2);
-	outb(0x00, base + 3);
-	outb(0x80, base + 7);
-	outb(0x00, base + 4);
-	outb(0x00, base + 5);
-	outb(0x00, base + 6);
-	outb(0x00, base + 7);
+	outb(0x80, base[id] + 3);
+	outb(0x00, base[id]);
+	outb(0x00, base[id] + 1);
+	outb(0x00, base[id] + 2);
+	outb(0x00, base[id] + 3);
+	outb(0x80, base[id] + 7);
+	outb(0x00, base[id] + 4);
+	outb(0x00, base[id] + 5);
+	outb(0x00, base[id] + 6);
+	outb(0x00, base[id] + 7);
 
 	/* disable IRQ by default */
-	inb(base + 0xB);
+	inb(base[id] + 0xB);
 
 	err = gpiochip_irqchip_add(&dio48egpio->chip, &dio48e_irqchip, 0,
 		handle_edge_irq, IRQ_TYPE_NONE);
@@ -359,7 +363,7 @@ static int __init dio48e_probe(struct platform_device *pdev)
 		goto err_gpiochip_remove;
 	}
 
-	err = request_irq(irq, dio48e_irq_handler, 0, name, dio48egpio);
+	err = request_irq(irq[id], dio48e_irq_handler, 0, name, dio48egpio);
 	if (err) {
 		dev_err(dev, "IRQ handler registering failed (%d)\n", err);
 		goto err_gpiochip_remove;
@@ -372,9 +376,9 @@ err_gpiochip_remove:
 	return err;
 }
 
-static int dio48e_remove(struct platform_device *pdev)
+static int dio48e_remove(struct device *dev, unsigned int id)
 {
-	struct dio48e_gpio *const dio48egpio = platform_get_drvdata(pdev);
+	struct dio48e_gpio *const dio48egpio = dev_get_drvdata(dev);
 
 	free_irq(dio48egpio->irq, dio48egpio);
 	gpiochip_remove(&dio48egpio->chip);
@@ -382,48 +386,14 @@ static int dio48e_remove(struct platform_device *pdev)
 	return 0;
 }
 
-static struct platform_device *dio48e_device;
-
-static struct platform_driver dio48e_driver = {
+static struct isa_driver dio48e_driver = {
+	.probe = dio48e_probe,
 	.driver = {
 		.name = "104-dio-48e"
 	},
 	.remove = dio48e_remove
 };
-
-static void __exit dio48e_exit(void)
-{
-	platform_device_unregister(dio48e_device);
-	platform_driver_unregister(&dio48e_driver);
-}
-
-static int __init dio48e_init(void)
-{
-	int err;
-
-	dio48e_device = platform_device_alloc(dio48e_driver.driver.name, -1);
-	if (!dio48e_device)
-		return -ENOMEM;
-
-	err = platform_device_add(dio48e_device);
-	if (err)
-		goto err_platform_device;
-
-	err = platform_driver_probe(&dio48e_driver, dio48e_probe);
-	if (err)
-		goto err_platform_driver;
-
-	return 0;
-
-err_platform_driver:
-	platform_device_del(dio48e_device);
-err_platform_device:
-	platform_device_put(dio48e_device);
-	return err;
-}
-
-module_init(dio48e_init);
-module_exit(dio48e_exit);
+module_isa_driver(dio48e_driver, num_dio48e);
 
 MODULE_AUTHOR("William Breathitt Gray <vilhelm.gray@gmail.com>");
 MODULE_DESCRIPTION("ACCES 104-DIO-48E GPIO driver");
diff --git a/drivers/gpio/gpio-104-idi-48.c b/drivers/gpio/gpio-104-idi-48.c
index e37cd4cdd..2d2763ea1 100644
--- a/drivers/gpio/gpio-104-idi-48.c
+++ b/drivers/gpio/gpio-104-idi-48.c
@@ -10,6 +10,9 @@
  * WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * General Public License for more details.
+ *
+ * This driver supports the following ACCES devices: 104-IDI-48A,
+ * 104-IDI-48AC, 104-IDI-48B, and 104-IDI-48BC.
  */
 #include <linux/bitops.h>
 #include <linux/device.h>
@@ -19,18 +22,23 @@
 #include <linux/ioport.h>
 #include <linux/interrupt.h>
 #include <linux/irqdesc.h>
+#include <linux/isa.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/moduleparam.h>
-#include <linux/platform_device.h>
 #include <linux/spinlock.h>
 
-static unsigned idi_48_base;
-module_param(idi_48_base, uint, 0);
-MODULE_PARM_DESC(idi_48_base, "ACCES 104-IDI-48 base address");
-static unsigned idi_48_irq;
-module_param(idi_48_irq, uint, 0);
-MODULE_PARM_DESC(idi_48_irq, "ACCES 104-IDI-48 interrupt line number");
+#define IDI_48_EXTENT 8
+#define MAX_NUM_IDI_48 max_num_isa_dev(IDI_48_EXTENT)
+
+static unsigned int base[MAX_NUM_IDI_48];
+static unsigned int num_idi_48;
+module_param_array(base, uint, &num_idi_48, 0);
+MODULE_PARM_DESC(base, "ACCES 104-IDI-48 base addresses");
+
+static unsigned int irq[MAX_NUM_IDI_48];
+module_param_array(irq, uint, NULL, 0);
+MODULE_PARM_DESC(irq, "ACCES 104-IDI-48 interrupt line numbers");
 
 /**
  * struct idi_48_gpio - GPIO device private data structure
@@ -211,23 +219,19 @@ static irqreturn_t idi_48_irq_handler(int irq, void *dev_id)
 	return IRQ_HANDLED;
 }
 
-static int __init idi_48_probe(struct platform_device *pdev)
+static int idi_48_probe(struct device *dev, unsigned int id)
 {
-	struct device *dev = &pdev->dev;
 	struct idi_48_gpio *idi48gpio;
-	const unsigned base = idi_48_base;
-	const unsigned extent = 8;
 	const char *const name = dev_name(dev);
 	int err;
-	const unsigned irq = idi_48_irq;
 
 	idi48gpio = devm_kzalloc(dev, sizeof(*idi48gpio), GFP_KERNEL);
 	if (!idi48gpio)
 		return -ENOMEM;
 
-	if (!devm_request_region(dev, base, extent, name)) {
+	if (!devm_request_region(dev, base[id], IDI_48_EXTENT, name)) {
 		dev_err(dev, "Unable to lock port addresses (0x%X-0x%X)\n",
-			base, base + extent);
+			base[id], base[id] + IDI_48_EXTENT);
 		return -EBUSY;
 	}
 
@@ -239,10 +243,11 @@ static int __init idi_48_probe(struct platform_device *pdev)
 	idi48gpio->chip.get_direction = idi_48_gpio_get_direction;
 	idi48gpio->chip.direction_input = idi_48_gpio_direction_input;
 	idi48gpio->chip.get = idi_48_gpio_get;
-	idi48gpio->base = base;
-	idi48gpio->irq = irq;
+	idi48gpio->base = base[id];
+	idi48gpio->irq = irq[id];
 
 	spin_lock_init(&idi48gpio->lock);
+	spin_lock_init(&idi48gpio->ack_lock);
 
 	dev_set_drvdata(dev, idi48gpio);
 
@@ -253,8 +258,8 @@ static int __init idi_48_probe(struct platform_device *pdev)
 	}
 
 	/* Disable IRQ by default */
-	outb(0, base + 7);
-	inb(base + 7);
+	outb(0, base[id] + 7);
+	inb(base[id] + 7);
 
 	err = gpiochip_irqchip_add(&idi48gpio->chip, &idi_48_irqchip, 0,
 		handle_edge_irq, IRQ_TYPE_NONE);
@@ -263,7 +268,7 @@ static int __init idi_48_probe(struct platform_device *pdev)
 		goto err_gpiochip_remove;
 	}
 
-	err = request_irq(irq, idi_48_irq_handler, IRQF_SHARED, name,
+	err = request_irq(irq[id], idi_48_irq_handler, IRQF_SHARED, name,
 		idi48gpio);
 	if (err) {
 		dev_err(dev, "IRQ handler registering failed (%d)\n", err);
@@ -277,9 +282,9 @@ err_gpiochip_remove:
 	return err;
 }
 
-static int idi_48_remove(struct platform_device *pdev)
+static int idi_48_remove(struct device *dev, unsigned int id)
 {
-	struct idi_48_gpio *const idi48gpio = platform_get_drvdata(pdev);
+	struct idi_48_gpio *const idi48gpio = dev_get_drvdata(dev);
 
 	free_irq(idi48gpio->irq, idi48gpio);
 	gpiochip_remove(&idi48gpio->chip);
@@ -287,48 +292,14 @@ static int idi_48_remove(struct platform_device *pdev)
 	return 0;
 }
 
-static struct platform_device *idi_48_device;
-
-static struct platform_driver idi_48_driver = {
+static struct isa_driver idi_48_driver = {
+	.probe = idi_48_probe,
 	.driver = {
 		.name = "104-idi-48"
 	},
 	.remove = idi_48_remove
 };
-
-static void __exit idi_48_exit(void)
-{
-	platform_device_unregister(idi_48_device);
-	platform_driver_unregister(&idi_48_driver);
-}
-
-static int __init idi_48_init(void)
-{
-	int err;
-
-	idi_48_device = platform_device_alloc(idi_48_driver.driver.name, -1);
-	if (!idi_48_device)
-		return -ENOMEM;
-
-	err = platform_device_add(idi_48_device);
-	if (err)
-		goto err_platform_device;
-
-	err = platform_driver_probe(&idi_48_driver, idi_48_probe);
-	if (err)
-		goto err_platform_driver;
-
-	return 0;
-
-err_platform_driver:
-	platform_device_del(idi_48_device);
-err_platform_device:
-	platform_device_put(idi_48_device);
-	return err;
-}
-
-module_init(idi_48_init);
-module_exit(idi_48_exit);
+module_isa_driver(idi_48_driver, num_idi_48);
 
 MODULE_AUTHOR("William Breathitt Gray <vilhelm.gray@gmail.com>");
 MODULE_DESCRIPTION("ACCES 104-IDI-48 GPIO driver");
diff --git a/drivers/gpio/gpio-104-idio-16.c b/drivers/gpio/gpio-104-idio-16.c
index ecc85fe93..6787b8fcf 100644
--- a/drivers/gpio/gpio-104-idio-16.c
+++ b/drivers/gpio/gpio-104-idio-16.c
@@ -10,6 +10,9 @@
  * WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * General Public License for more details.
+ *
+ * This driver supports the following ACCES devices: 104-IDIO-16,
+ * 104-IDIO-16E, 104-IDO-16, 104-IDIO-8, 104-IDIO-8E, and 104-IDO-8.
  */
 #include <linux/bitops.h>
 #include <linux/device.h>
@@ -19,18 +22,23 @@
 #include <linux/ioport.h>
 #include <linux/interrupt.h>
 #include <linux/irqdesc.h>
+#include <linux/isa.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/moduleparam.h>
-#include <linux/platform_device.h>
 #include <linux/spinlock.h>
 
-static unsigned idio_16_base;
-module_param(idio_16_base, uint, 0);
-MODULE_PARM_DESC(idio_16_base, "ACCES 104-IDIO-16 base address");
-static unsigned idio_16_irq;
-module_param(idio_16_irq, uint, 0);
-MODULE_PARM_DESC(idio_16_irq, "ACCES 104-IDIO-16 interrupt line number");
+#define IDIO_16_EXTENT 8
+#define MAX_NUM_IDIO_16 max_num_isa_dev(IDIO_16_EXTENT)
+
+static unsigned int base[MAX_NUM_IDIO_16];
+static unsigned int num_idio_16;
+module_param_array(base, uint, &num_idio_16, 0);
+MODULE_PARM_DESC(base, "ACCES 104-IDIO-16 base addresses");
+
+static unsigned int irq[MAX_NUM_IDIO_16];
+module_param_array(irq, uint, NULL, 0);
+MODULE_PARM_DESC(irq, "ACCES 104-IDIO-16 interrupt line numbers");
 
 /**
  * struct idio_16_gpio - GPIO device private data structure
@@ -185,23 +193,19 @@ static irqreturn_t idio_16_irq_handler(int irq, void *dev_id)
 	return IRQ_HANDLED;
 }
 
-static int __init idio_16_probe(struct platform_device *pdev)
+static int idio_16_probe(struct device *dev, unsigned int id)
 {
-	struct device *dev = &pdev->dev;
 	struct idio_16_gpio *idio16gpio;
-	const unsigned base = idio_16_base;
-	const unsigned extent = 8;
 	const char *const name = dev_name(dev);
 	int err;
-	const unsigned irq = idio_16_irq;
 
 	idio16gpio = devm_kzalloc(dev, sizeof(*idio16gpio), GFP_KERNEL);
 	if (!idio16gpio)
 		return -ENOMEM;
 
-	if (!devm_request_region(dev, base, extent, name)) {
+	if (!devm_request_region(dev, base[id], IDIO_16_EXTENT, name)) {
 		dev_err(dev, "Unable to lock port addresses (0x%X-0x%X)\n",
-			base, base + extent);
+			base[id], base[id] + IDIO_16_EXTENT);
 		return -EBUSY;
 	}
 
@@ -215,8 +219,8 @@ static int __init idio_16_probe(struct platform_device *pdev)
 	idio16gpio->chip.direction_output = idio_16_gpio_direction_output;
 	idio16gpio->chip.get = idio_16_gpio_get;
 	idio16gpio->chip.set = idio_16_gpio_set;
-	idio16gpio->base = base;
-	idio16gpio->irq = irq;
+	idio16gpio->base = base[id];
+	idio16gpio->irq = irq[id];
 	idio16gpio->out_state = 0xFFFF;
 
 	spin_lock_init(&idio16gpio->lock);
@@ -230,8 +234,8 @@ static int __init idio_16_probe(struct platform_device *pdev)
 	}
 
 	/* Disable IRQ by default */
-	outb(0, base + 2);
-	outb(0, base + 1);
+	outb(0, base[id] + 2);
+	outb(0, base[id] + 1);
 
 	err = gpiochip_irqchip_add(&idio16gpio->chip, &idio_16_irqchip, 0,
 		handle_edge_irq, IRQ_TYPE_NONE);
@@ -240,7 +244,7 @@ static int __init idio_16_probe(struct platform_device *pdev)
 		goto err_gpiochip_remove;
 	}
 
-	err = request_irq(irq, idio_16_irq_handler, 0, name, idio16gpio);
+	err = request_irq(irq[id], idio_16_irq_handler, 0, name, idio16gpio);
 	if (err) {
 		dev_err(dev, "IRQ handler registering failed (%d)\n", err);
 		goto err_gpiochip_remove;
@@ -253,9 +257,9 @@ err_gpiochip_remove:
 	return err;
 }
 
-static int idio_16_remove(struct platform_device *pdev)
+static int idio_16_remove(struct device *dev, unsigned int id)
 {
-	struct idio_16_gpio *const idio16gpio = platform_get_drvdata(pdev);
+	struct idio_16_gpio *const idio16gpio = dev_get_drvdata(dev);
 
 	free_irq(idio16gpio->irq, idio16gpio);
 	gpiochip_remove(&idio16gpio->chip);
@@ -263,48 +267,15 @@ static int idio_16_remove(struct platform_device *pdev)
 	return 0;
 }
 
-static struct platform_device *idio_16_device;
-
-static struct platform_driver idio_16_driver = {
+static struct isa_driver idio_16_driver = {
+	.probe = idio_16_probe,
 	.driver = {
 		.name = "104-idio-16"
 	},
 	.remove = idio_16_remove
 };
 
-static void __exit idio_16_exit(void)
-{
-	platform_device_unregister(idio_16_device);
-	platform_driver_unregister(&idio_16_driver);
-}
-
-static int __init idio_16_init(void)
-{
-	int err;
-
-	idio_16_device = platform_device_alloc(idio_16_driver.driver.name, -1);
-	if (!idio_16_device)
-		return -ENOMEM;
-
-	err = platform_device_add(idio_16_device);
-	if (err)
-		goto err_platform_device;
-
-	err = platform_driver_probe(&idio_16_driver, idio_16_probe);
-	if (err)
-		goto err_platform_driver;
-
-	return 0;
-
-err_platform_driver:
-	platform_device_del(idio_16_device);
-err_platform_device:
-	platform_device_put(idio_16_device);
-	return err;
-}
-
-module_init(idio_16_init);
-module_exit(idio_16_exit);
+module_isa_driver(idio_16_driver, num_idio_16);
 
 MODULE_AUTHOR("William Breathitt Gray <vilhelm.gray@gmail.com>");
 MODULE_DESCRIPTION("ACCES 104-IDIO-16 GPIO driver");
diff --git a/drivers/gpio/gpio-74x164.c b/drivers/gpio/gpio-74x164.c
index c81224ff2..80f9ddf13 100644
--- a/drivers/gpio/gpio-74x164.c
+++ b/drivers/gpio/gpio-74x164.c
@@ -75,6 +75,29 @@ static void gen_74x164_set_value(struct gpio_chip *gc,
 	mutex_unlock(&chip->lock);
 }
 
+static void gen_74x164_set_multiple(struct gpio_chip *gc, unsigned long *mask,
+				    unsigned long *bits)
+{
+	struct gen_74x164_chip *chip = gpiochip_get_data(gc);
+	unsigned int i, idx, shift;
+	u8 bank, bankmask;
+
+	mutex_lock(&chip->lock);
+	for (i = 0, bank = chip->registers - 1; i < chip->registers;
+	     i++, bank--) {
+		idx = i / sizeof(*mask);
+		shift = i % sizeof(*mask) * BITS_PER_BYTE;
+		bankmask = mask[idx] >> shift;
+		if (!bankmask)
+			continue;
+
+		chip->buffer[bank] &= ~bankmask;
+		chip->buffer[bank] |= bankmask & (bits[idx] >> shift);
+	}
+	__gen_74x164_write_config(chip);
+	mutex_unlock(&chip->lock);
+}
+
 static int gen_74x164_direction_output(struct gpio_chip *gc,
 		unsigned offset, int val)
 {
@@ -114,6 +137,7 @@ static int gen_74x164_probe(struct spi_device *spi)
 	chip->gpio_chip.direction_output = gen_74x164_direction_output;
 	chip->gpio_chip.get = gen_74x164_get_value;
 	chip->gpio_chip.set = gen_74x164_set_value;
+	chip->gpio_chip.set_multiple = gen_74x164_set_multiple;
 	chip->gpio_chip.base = -1;
 
 	chip->registers = nregs;
@@ -153,6 +177,7 @@ static int gen_74x164_remove(struct spi_device *spi)
 
 static const struct of_device_id gen_74x164_dt_ids[] = {
 	{ .compatible = "fairchild,74hc595" },
+	{ .compatible = "nxp,74lvc594" },
 	{},
 };
 MODULE_DEVICE_TABLE(of, gen_74x164_dt_ids);
diff --git a/drivers/gpio/gpio-amdpt.c b/drivers/gpio/gpio-amdpt.c
index c2484046e..9b78dc837 100644
--- a/drivers/gpio/gpio-amdpt.c
+++ b/drivers/gpio/gpio-amdpt.c
@@ -28,7 +28,6 @@
 struct pt_gpio_chip {
 	struct gpio_chip         gc;
 	void __iomem             *reg_base;
-	spinlock_t               lock;
 };
 
 static int pt_gpio_request(struct gpio_chip *gc, unsigned offset)
@@ -39,19 +38,19 @@ static int pt_gpio_request(struct gpio_chip *gc, unsigned offset)
 
 	dev_dbg(gc->parent, "pt_gpio_request offset=%x\n", offset);
 
-	spin_lock_irqsave(&pt_gpio->lock, flags);
+	spin_lock_irqsave(&gc->bgpio_lock, flags);
 
 	using_pins = readl(pt_gpio->reg_base + PT_SYNC_REG);
 	if (using_pins & BIT(offset)) {
 		dev_warn(gc->parent, "PT GPIO pin %x reconfigured\n",
 			 offset);
-		spin_unlock_irqrestore(&pt_gpio->lock, flags);
+		spin_unlock_irqrestore(&gc->bgpio_lock, flags);
 		return -EINVAL;
 	}
 
 	writel(using_pins | BIT(offset), pt_gpio->reg_base + PT_SYNC_REG);
 
-	spin_unlock_irqrestore(&pt_gpio->lock, flags);
+	spin_unlock_irqrestore(&gc->bgpio_lock, flags);
 
 	return 0;
 }
@@ -62,111 +61,17 @@ static void pt_gpio_free(struct gpio_chip *gc, unsigned offset)
 	unsigned long flags;
 	u32 using_pins;
 
-	spin_lock_irqsave(&pt_gpio->lock, flags);
+	spin_lock_irqsave(&gc->bgpio_lock, flags);
 
 	using_pins = readl(pt_gpio->reg_base + PT_SYNC_REG);
 	using_pins &= ~BIT(offset);
 	writel(using_pins, pt_gpio->reg_base + PT_SYNC_REG);
 
-	spin_unlock_irqrestore(&pt_gpio->lock, flags);
+	spin_unlock_irqrestore(&gc->bgpio_lock, flags);
 
 	dev_dbg(gc->parent, "pt_gpio_free offset=%x\n", offset);
 }
 
-static void pt_gpio_set_value(struct gpio_chip *gc, unsigned offset, int value)
-{
-	struct pt_gpio_chip *pt_gpio = gpiochip_get_data(gc);
-	unsigned long flags;
-	u32 data;
-
-	dev_dbg(gc->parent, "pt_gpio_set_value offset=%x, value=%x\n",
-		offset, value);
-
-	spin_lock_irqsave(&pt_gpio->lock, flags);
-
-	data = readl(pt_gpio->reg_base + PT_OUTPUTDATA_REG);
-	data &= ~BIT(offset);
-	if (value)
-		data |= BIT(offset);
-	writel(data, pt_gpio->reg_base + PT_OUTPUTDATA_REG);
-
-	spin_unlock_irqrestore(&pt_gpio->lock, flags);
-}
-
-static int pt_gpio_get_value(struct gpio_chip *gc, unsigned offset)
-{
-	struct pt_gpio_chip *pt_gpio = gpiochip_get_data(gc);
-	unsigned long flags;
-	u32 data;
-
-	spin_lock_irqsave(&pt_gpio->lock, flags);
-
-	data = readl(pt_gpio->reg_base + PT_DIRECTION_REG);
-
-	/* configure as output */
-	if (data & BIT(offset))
-		data = readl(pt_gpio->reg_base + PT_OUTPUTDATA_REG);
-	else	/* configure as input */
-		data = readl(pt_gpio->reg_base + PT_INPUTDATA_REG);
-
-	spin_unlock_irqrestore(&pt_gpio->lock, flags);
-
-	data >>= offset;
-	data &= 1;
-
-	dev_dbg(gc->parent, "pt_gpio_get_value offset=%x, value=%x\n",
-		offset, data);
-
-	return data;
-}
-
-static int pt_gpio_direction_input(struct gpio_chip *gc, unsigned offset)
-{
-	struct pt_gpio_chip *pt_gpio = gpiochip_get_data(gc);
-	unsigned long flags;
-	u32 data;
-
-	dev_dbg(gc->parent, "pt_gpio_dirction_input offset=%x\n", offset);
-
-	spin_lock_irqsave(&pt_gpio->lock, flags);
-
-	data = readl(pt_gpio->reg_base + PT_DIRECTION_REG);
-	data &= ~BIT(offset);
-	writel(data, pt_gpio->reg_base + PT_DIRECTION_REG);
-
-	spin_unlock_irqrestore(&pt_gpio->lock, flags);
-
-	return 0;
-}
-
-static int pt_gpio_direction_output(struct gpio_chip *gc,
-					unsigned offset, int value)
-{
-	struct pt_gpio_chip *pt_gpio = gpiochip_get_data(gc);
-	unsigned long flags;
-	u32 data;
-
-	dev_dbg(gc->parent, "pt_gpio_direction_output offset=%x, value=%x\n",
-		offset, value);
-
-	spin_lock_irqsave(&pt_gpio->lock, flags);
-
-	data = readl(pt_gpio->reg_base + PT_OUTPUTDATA_REG);
-	if (value)
-		data |= BIT(offset);
-	else
-		data &= ~BIT(offset);
-	writel(data, pt_gpio->reg_base + PT_OUTPUTDATA_REG);
-
-	data = readl(pt_gpio->reg_base + PT_DIRECTION_REG);
-	data |= BIT(offset);
-	writel(data, pt_gpio->reg_base + PT_DIRECTION_REG);
-
-	spin_unlock_irqrestore(&pt_gpio->lock, flags);
-
-	return 0;
-}
-
 static int pt_gpio_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
@@ -196,18 +101,19 @@ static int pt_gpio_probe(struct platform_device *pdev)
 		return PTR_ERR(pt_gpio->reg_base);
 	}
 
-	spin_lock_init(&pt_gpio->lock);
+	ret = bgpio_init(&pt_gpio->gc, dev, 4,
+			 pt_gpio->reg_base + PT_INPUTDATA_REG,
+			 pt_gpio->reg_base + PT_OUTPUTDATA_REG, NULL,
+			 pt_gpio->reg_base + PT_DIRECTION_REG, NULL,
+			 BGPIOF_READ_OUTPUT_REG_SET);
+	if (ret) {
+		dev_err(&pdev->dev, "bgpio_init failed\n");
+		return ret;
+	}
 
-	pt_gpio->gc.label            = pdev->name;
 	pt_gpio->gc.owner            = THIS_MODULE;
-	pt_gpio->gc.parent              = dev;
 	pt_gpio->gc.request          = pt_gpio_request;
 	pt_gpio->gc.free             = pt_gpio_free;
-	pt_gpio->gc.direction_input  = pt_gpio_direction_input;
-	pt_gpio->gc.direction_output = pt_gpio_direction_output;
-	pt_gpio->gc.get              = pt_gpio_get_value;
-	pt_gpio->gc.set              = pt_gpio_set_value;
-	pt_gpio->gc.base             = -1;
 	pt_gpio->gc.ngpio            = PT_TOTAL_GPIO;
 #if defined(CONFIG_OF_GPIO)
 	pt_gpio->gc.of_node          = pdev->dev.of_node;
@@ -239,6 +145,7 @@ static int pt_gpio_remove(struct platform_device *pdev)
 
 static const struct acpi_device_id pt_gpio_acpi_match[] = {
 	{ "AMDF030", 0 },
+	{ "AMDIF030", 0 },
 	{ },
 };
 MODULE_DEVICE_TABLE(acpi, pt_gpio_acpi_match);
diff --git a/drivers/gpio/gpio-bcm-kona.c b/drivers/gpio/gpio-bcm-kona.c
index 3c5e83263..953e4b829 100644
--- a/drivers/gpio/gpio-bcm-kona.c
+++ b/drivers/gpio/gpio-bcm-kona.c
@@ -1,4 +1,7 @@
 /*
+ * Broadcom Kona GPIO Driver
+ *
+ * Author: Broadcom Corporation <bcm-kernel-feedback-list@broadcom.com>
  * Copyright (C) 2012-2014 Broadcom Corporation
  *
  * This program is free software; you can redistribute it and/or
@@ -17,7 +20,7 @@
 #include <linux/gpio.h>
 #include <linux/of_device.h>
 #include <linux/of_irq.h>
-#include <linux/module.h>
+#include <linux/init.h>
 #include <linux/irqdomain.h>
 #include <linux/irqchip/chained_irq.h>
 
@@ -502,8 +505,6 @@ static struct of_device_id const bcm_kona_gpio_of_match[] = {
 	{}
 };
 
-MODULE_DEVICE_TABLE(of, bcm_kona_gpio_of_match);
-
 /*
  * This lock class tells lockdep that GPIO irqs are in a different
  * category than their parents, so it won't report false recursion.
@@ -659,9 +660,4 @@ static struct platform_driver bcm_kona_gpio_driver = {
 	},
 	.probe = bcm_kona_gpio_probe,
 };
-
-module_platform_driver(bcm_kona_gpio_driver);
-
-MODULE_AUTHOR("Broadcom Corporation <bcm-kernel-feedback-list@broadcom.com>");
-MODULE_DESCRIPTION("Broadcom Kona GPIO Driver");
-MODULE_LICENSE("GPL v2");
+builtin_platform_driver(bcm_kona_gpio_driver);
diff --git a/drivers/gpio/gpio-brcmstb.c b/drivers/gpio/gpio-brcmstb.c
index 42d51c59e..e64891437 100644
--- a/drivers/gpio/gpio-brcmstb.c
+++ b/drivers/gpio/gpio-brcmstb.c
@@ -461,6 +461,7 @@ static int brcmstb_gpio_probe(struct platform_device *pdev)
 		bank->id = num_banks;
 		if (bank_width <= 0 || bank_width > MAX_GPIO_PER_BANK) {
 			dev_err(dev, "Invalid bank width %d\n", bank_width);
+			err = -EINVAL;
 			goto fail;
 		} else {
 			bank->width = bank_width;
diff --git a/drivers/gpio/gpio-dwapb.c b/drivers/gpio/gpio-dwapb.c
index 597de1ef4..34779bb37 100644
--- a/drivers/gpio/gpio-dwapb.c
+++ b/drivers/gpio/gpio-dwapb.c
@@ -7,6 +7,7 @@
  *
  * All enquiries to support@picochip.com
  */
+#include <linux/acpi.h>
 #include <linux/gpio/driver.h>
 /* FIXME: for gpio_get_value(), replace this with direct register read */
 #include <linux/gpio.h>
@@ -22,10 +23,13 @@
 #include <linux/of_address.h>
 #include <linux/of_irq.h>
 #include <linux/platform_device.h>
+#include <linux/property.h>
 #include <linux/spinlock.h>
 #include <linux/platform_data/gpio-dwapb.h>
 #include <linux/slab.h>
 
+#include "gpiolib.h"
+
 #define GPIO_SWPORTA_DR		0x00
 #define GPIO_SWPORTA_DDR	0x04
 #define GPIO_SWPORTB_DR		0x0c
@@ -290,14 +294,14 @@ static void dwapb_configure_irqs(struct dwapb_gpio *gpio,
 				 struct dwapb_port_property *pp)
 {
 	struct gpio_chip *gc = &port->gc;
-	struct device_node *node = pp->node;
+	struct fwnode_handle  *fwnode = pp->fwnode;
 	struct irq_chip_generic	*irq_gc = NULL;
 	unsigned int hwirq, ngpio = gc->ngpio;
 	struct irq_chip_type *ct;
 	int err, i;
 
-	gpio->domain = irq_domain_add_linear(node, ngpio,
-					     &irq_generic_chip_ops, gpio);
+	gpio->domain = irq_domain_create_linear(fwnode, ngpio,
+						 &irq_generic_chip_ops, gpio);
 	if (!gpio->domain)
 		return;
 
@@ -409,13 +413,13 @@ static int dwapb_gpio_add_port(struct dwapb_gpio *gpio,
 	err = bgpio_init(&port->gc, gpio->dev, 4, dat, set, NULL, dirout,
 			 NULL, false);
 	if (err) {
-		dev_err(gpio->dev, "failed to init gpio chip for %s\n",
-			pp->name);
+		dev_err(gpio->dev, "failed to init gpio chip for port%d\n",
+			port->idx);
 		return err;
 	}
 
 #ifdef CONFIG_OF_GPIO
-	port->gc.of_node = pp->node;
+	port->gc.of_node = to_of_node(pp->fwnode);
 #endif
 	port->gc.ngpio = pp->ngpio;
 	port->gc.base = pp->gpio_base;
@@ -429,11 +433,15 @@ static int dwapb_gpio_add_port(struct dwapb_gpio *gpio,
 
 	err = gpiochip_add_data(&port->gc, port);
 	if (err)
-		dev_err(gpio->dev, "failed to register gpiochip for %s\n",
-			pp->name);
+		dev_err(gpio->dev, "failed to register gpiochip for port%d\n",
+			port->idx);
 	else
 		port->is_registered = true;
 
+	/* Add GPIO-signaled ACPI event support */
+	if (pp->irq)
+		acpi_gpiochip_request_interrupts(&port->gc);
+
 	return err;
 }
 
@@ -447,19 +455,15 @@ static void dwapb_gpio_unregister(struct dwapb_gpio *gpio)
 }
 
 static struct dwapb_platform_data *
-dwapb_gpio_get_pdata_of(struct device *dev)
+dwapb_gpio_get_pdata(struct device *dev)
 {
-	struct device_node *node, *port_np;
+	struct fwnode_handle *fwnode;
 	struct dwapb_platform_data *pdata;
 	struct dwapb_port_property *pp;
 	int nports;
 	int i;
 
-	node = dev->of_node;
-	if (!IS_ENABLED(CONFIG_OF_GPIO) || !node)
-		return ERR_PTR(-ENODEV);
-
-	nports = of_get_child_count(node);
+	nports = device_get_child_node_count(dev);
 	if (nports == 0)
 		return ERR_PTR(-ENODEV);
 
@@ -474,21 +478,22 @@ dwapb_gpio_get_pdata_of(struct device *dev)
 	pdata->nports = nports;
 
 	i = 0;
-	for_each_child_of_node(node, port_np) {
+	device_for_each_child_node(dev, fwnode)  {
 		pp = &pdata->properties[i++];
-		pp->node = port_np;
+		pp->fwnode = fwnode;
 
-		if (of_property_read_u32(port_np, "reg", &pp->idx) ||
+		if (fwnode_property_read_u32(fwnode, "reg", &pp->idx) ||
 		    pp->idx >= DWAPB_MAX_PORTS) {
-			dev_err(dev, "missing/invalid port index for %s\n",
-				port_np->full_name);
+			dev_err(dev,
+				"missing/invalid port index for port%d\n", i);
 			return ERR_PTR(-EINVAL);
 		}
 
-		if (of_property_read_u32(port_np, "snps,nr-gpios",
+		if (fwnode_property_read_u32(fwnode, "snps,nr-gpios",
 					 &pp->ngpio)) {
-			dev_info(dev, "failed to get number of gpios for %s\n",
-				 port_np->full_name);
+			dev_info(dev,
+				 "failed to get number of gpios for port%d\n",
+				 i);
 			pp->ngpio = 32;
 		}
 
@@ -496,18 +501,19 @@ dwapb_gpio_get_pdata_of(struct device *dev)
 		 * Only port A can provide interrupts in all configurations of
 		 * the IP.
 		 */
-		if (pp->idx == 0 &&
-		    of_property_read_bool(port_np, "interrupt-controller")) {
-			pp->irq = irq_of_parse_and_map(port_np, 0);
-			if (!pp->irq) {
-				dev_warn(dev, "no irq for bank %s\n",
-					 port_np->full_name);
-			}
+		if (dev->of_node && pp->idx == 0 &&
+			fwnode_property_read_bool(fwnode,
+						  "interrupt-controller")) {
+			pp->irq = irq_of_parse_and_map(to_of_node(fwnode), 0);
+			if (!pp->irq)
+				dev_warn(dev, "no irq for port%d\n", pp->idx);
 		}
 
+		if (has_acpi_companion(dev) && pp->idx == 0)
+			pp->irq = platform_get_irq(to_platform_device(dev), 0);
+
 		pp->irq_shared	= false;
 		pp->gpio_base	= -1;
-		pp->name	= port_np->full_name;
 	}
 
 	return pdata;
@@ -523,7 +529,7 @@ static int dwapb_gpio_probe(struct platform_device *pdev)
 	struct dwapb_platform_data *pdata = dev_get_platdata(dev);
 
 	if (!pdata) {
-		pdata = dwapb_gpio_get_pdata_of(dev);
+		pdata = dwapb_gpio_get_pdata(dev);
 		if (IS_ERR(pdata))
 			return PTR_ERR(pdata);
 	}
@@ -580,6 +586,13 @@ static const struct of_device_id dwapb_of_match[] = {
 };
 MODULE_DEVICE_TABLE(of, dwapb_of_match);
 
+static const struct acpi_device_id dwapb_acpi_match[] = {
+	{"HISI0181", 0},
+	{"APMC0D07", 0},
+	{ }
+};
+MODULE_DEVICE_TABLE(acpi, dwapb_acpi_match);
+
 #ifdef CONFIG_PM_SLEEP
 static int dwapb_gpio_suspend(struct device *dev)
 {
@@ -674,6 +687,7 @@ static struct platform_driver dwapb_gpio_driver = {
 		.name	= "gpio-dwapb",
 		.pm	= &dwapb_gpio_pm_ops,
 		.of_match_table = of_match_ptr(dwapb_of_match),
+		.acpi_match_table = ACPI_PTR(dwapb_acpi_match),
 	},
 	.probe		= dwapb_gpio_probe,
 	.remove		= dwapb_gpio_remove,
diff --git a/drivers/gpio/gpio-f7188x.c b/drivers/gpio/gpio-f7188x.c
index daac2d480..05aa538c3 100644
--- a/drivers/gpio/gpio-f7188x.c
+++ b/drivers/gpio/gpio-f7188x.c
@@ -15,7 +15,8 @@
 #include <linux/init.h>
 #include <linux/platform_device.h>
 #include <linux/io.h>
-#include <linux/gpio.h>
+#include <linux/gpio/driver.h>
+#include <linux/bitops.h>
 
 #define DRVNAME "gpio-f7188x"
 
@@ -129,6 +130,9 @@ static int f7188x_gpio_get(struct gpio_chip *chip, unsigned offset);
 static int f7188x_gpio_direction_out(struct gpio_chip *chip,
 				     unsigned offset, int value);
 static void f7188x_gpio_set(struct gpio_chip *chip, unsigned offset, int value);
+static int f7188x_gpio_set_single_ended(struct gpio_chip *gc,
+					unsigned offset,
+					enum single_ended_mode mode);
 
 #define F7188X_GPIO_BANK(_base, _ngpio, _regbase)			\
 	{								\
@@ -139,6 +143,7 @@ static void f7188x_gpio_set(struct gpio_chip *chip, unsigned offset, int value);
 			.get              = f7188x_gpio_get,		\
 			.direction_output = f7188x_gpio_direction_out,	\
 			.set              = f7188x_gpio_set,		\
+			.set_single_ended = f7188x_gpio_set_single_ended, \
 			.base             = _base,			\
 			.ngpio            = _ngpio,			\
 			.can_sleep        = true,			\
@@ -217,7 +222,7 @@ static int f7188x_gpio_direction_in(struct gpio_chip *chip, unsigned offset)
 	superio_select(sio->addr, SIO_LD_GPIO);
 
 	dir = superio_inb(sio->addr, gpio_dir(bank->regbase));
-	dir &= ~(1 << offset);
+	dir &= ~BIT(offset);
 	superio_outb(sio->addr, gpio_dir(bank->regbase), dir);
 
 	superio_exit(sio->addr);
@@ -238,7 +243,7 @@ static int f7188x_gpio_get(struct gpio_chip *chip, unsigned offset)
 	superio_select(sio->addr, SIO_LD_GPIO);
 
 	dir = superio_inb(sio->addr, gpio_dir(bank->regbase));
-	dir = !!(dir & (1 << offset));
+	dir = !!(dir & BIT(offset));
 	if (dir)
 		data = superio_inb(sio->addr, gpio_data_out(bank->regbase));
 	else
@@ -246,7 +251,7 @@ static int f7188x_gpio_get(struct gpio_chip *chip, unsigned offset)
 
 	superio_exit(sio->addr);
 
-	return !!(data & 1 << offset);
+	return !!(data & BIT(offset));
 }
 
 static int f7188x_gpio_direction_out(struct gpio_chip *chip,
@@ -264,13 +269,13 @@ static int f7188x_gpio_direction_out(struct gpio_chip *chip,
 
 	data_out = superio_inb(sio->addr, gpio_data_out(bank->regbase));
 	if (value)
-		data_out |= (1 << offset);
+		data_out |= BIT(offset);
 	else
-		data_out &= ~(1 << offset);
+		data_out &= ~BIT(offset);
 	superio_outb(sio->addr, gpio_data_out(bank->regbase), data_out);
 
 	dir = superio_inb(sio->addr, gpio_dir(bank->regbase));
-	dir |= (1 << offset);
+	dir |= BIT(offset);
 	superio_outb(sio->addr, gpio_dir(bank->regbase), dir);
 
 	superio_exit(sio->addr);
@@ -292,14 +297,43 @@ static void f7188x_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
 
 	data_out = superio_inb(sio->addr, gpio_data_out(bank->regbase));
 	if (value)
-		data_out |= (1 << offset);
+		data_out |= BIT(offset);
 	else
-		data_out &= ~(1 << offset);
+		data_out &= ~BIT(offset);
 	superio_outb(sio->addr, gpio_data_out(bank->regbase), data_out);
 
 	superio_exit(sio->addr);
 }
 
+static int f7188x_gpio_set_single_ended(struct gpio_chip *chip,
+					unsigned offset,
+					enum single_ended_mode mode)
+{
+	int err;
+	struct f7188x_gpio_bank *bank = gpiochip_get_data(chip);
+	struct f7188x_sio *sio = bank->data->sio;
+	u8 data;
+
+	if (mode != LINE_MODE_OPEN_DRAIN &&
+	    mode != LINE_MODE_PUSH_PULL)
+		return -ENOTSUPP;
+
+	err = superio_enter(sio->addr);
+	if (err)
+		return err;
+	superio_select(sio->addr, SIO_LD_GPIO);
+
+	data = superio_inb(sio->addr, gpio_out_mode(bank->regbase));
+	if (mode == LINE_MODE_OPEN_DRAIN)
+		data &= ~BIT(offset);
+	else
+		data |= BIT(offset);
+	superio_outb(sio->addr, gpio_out_mode(bank->regbase), data);
+
+	superio_exit(sio->addr);
+	return 0;
+}
+
 /*
  * Platform device and driver.
  */
diff --git a/drivers/gpio/gpio-it87.c b/drivers/gpio/gpio-it87.c
index b219c8241..63a962d18 100644
--- a/drivers/gpio/gpio-it87.c
+++ b/drivers/gpio/gpio-it87.c
@@ -34,6 +34,8 @@
 
 /* Chip Id numbers */
 #define NO_DEV_ID	0xffff
+#define IT8620_ID	0x8620
+#define IT8628_ID	0x8628
 #define IT8728_ID	0x8728
 #define IT8732_ID	0x8732
 #define IT8761_ID	0x8761
@@ -302,6 +304,14 @@ static int __init it87_gpio_init(void)
 	it87_gpio->chip = it87_template_chip;
 
 	switch (chip_type) {
+	case IT8620_ID:
+	case IT8628_ID:
+		gpio_ba_reg = 0x62;
+		it87_gpio->io_size = 11;
+		it87_gpio->output_base = 0xc8;
+		it87_gpio->simple_size = 0;
+		it87_gpio->chip.ngpio = 64;
+		break;
 	case IT8728_ID:
 	case IT8732_ID:
 		gpio_ba_reg = 0x62;
diff --git a/drivers/gpio/gpio-loongson1.c b/drivers/gpio/gpio-loongson1.c
new file mode 100644
index 000000000..10c09bdd8
--- /dev/null
+++ b/drivers/gpio/gpio-loongson1.c
@@ -0,0 +1,102 @@
+/*
+ * GPIO Driver for Loongson 1 SoC
+ *
+ * Copyright (C) 2015-2016 Zhang, Keguang <keguang.zhang@gmail.com>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#include <linux/gpio/driver.h>
+#include <linux/platform_device.h>
+
+/* Loongson 1 GPIO Register Definitions */
+#define GPIO_CFG		0x0
+#define GPIO_DIR		0x10
+#define GPIO_DATA		0x20
+#define GPIO_OUTPUT		0x30
+
+static void __iomem *gpio_reg_base;
+
+static int ls1x_gpio_request(struct gpio_chip *gc, unsigned int offset)
+{
+	unsigned long pinmask = gc->pin2mask(gc, offset);
+	unsigned long flags;
+
+	spin_lock_irqsave(&gc->bgpio_lock, flags);
+	__raw_writel(__raw_readl(gpio_reg_base + GPIO_CFG) | pinmask,
+		     gpio_reg_base + GPIO_CFG);
+	spin_unlock_irqrestore(&gc->bgpio_lock, flags);
+
+	return 0;
+}
+
+static void ls1x_gpio_free(struct gpio_chip *gc, unsigned int offset)
+{
+	unsigned long pinmask = gc->pin2mask(gc, offset);
+	unsigned long flags;
+
+	spin_lock_irqsave(&gc->bgpio_lock, flags);
+	__raw_writel(__raw_readl(gpio_reg_base + GPIO_CFG) & ~pinmask,
+		     gpio_reg_base + GPIO_CFG);
+	spin_unlock_irqrestore(&gc->bgpio_lock, flags);
+}
+
+static int ls1x_gpio_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct gpio_chip *gc;
+	struct resource *res;
+	int ret;
+
+	gc = devm_kzalloc(dev, sizeof(*gc), GFP_KERNEL);
+	if (!gc)
+		return -ENOMEM;
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	if (!res) {
+		dev_err(dev, "failed to get I/O memory\n");
+		return -EINVAL;
+	}
+
+	gpio_reg_base = devm_ioremap_resource(dev, res);
+	if (IS_ERR(gpio_reg_base))
+		return PTR_ERR(gpio_reg_base);
+
+	ret = bgpio_init(gc, dev, 4, gpio_reg_base + GPIO_DATA,
+			 gpio_reg_base + GPIO_OUTPUT, NULL,
+			 NULL, gpio_reg_base + GPIO_DIR, 0);
+	if (ret)
+		goto err;
+
+	gc->owner = THIS_MODULE;
+	gc->request = ls1x_gpio_request;
+	gc->free = ls1x_gpio_free;
+	gc->base = pdev->id * 32;
+
+	ret = devm_gpiochip_add_data(dev, gc, NULL);
+	if (ret)
+		goto err;
+
+	platform_set_drvdata(pdev, gc);
+	dev_info(dev, "Loongson1 GPIO driver registered\n");
+
+	return 0;
+err:
+	dev_err(dev, "failed to register GPIO device\n");
+	return ret;
+}
+
+static struct platform_driver ls1x_gpio_driver = {
+	.probe	= ls1x_gpio_probe,
+	.driver	= {
+		.name	= "ls1x-gpio",
+	},
+};
+
+module_platform_driver(ls1x_gpio_driver);
+
+MODULE_AUTHOR("Kelvin Cheung <keguang.zhang@gmail.com>");
+MODULE_DESCRIPTION("Loongson1 GPIO driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/gpio/gpio-lpc32xx.c b/drivers/gpio/gpio-lpc32xx.c
index d39014dae..fc5f19790 100644
--- a/drivers/gpio/gpio-lpc32xx.c
+++ b/drivers/gpio/gpio-lpc32xx.c
@@ -29,7 +29,6 @@
 
 #include <mach/hardware.h>
 #include <mach/platform.h>
-#include <mach/irqs.h>
 
 #define LPC32XX_GPIO_P3_INP_STATE		_GPREG(0x000)
 #define LPC32XX_GPIO_P3_OUTP_SET		_GPREG(0x004)
@@ -371,61 +370,16 @@ static int lpc32xx_gpio_request(struct gpio_chip *chip, unsigned pin)
 
 static int lpc32xx_gpio_to_irq_p01(struct gpio_chip *chip, unsigned offset)
 {
-	return IRQ_LPC32XX_P0_P1_IRQ;
+	return -ENXIO;
 }
 
-static const char lpc32xx_gpio_to_irq_gpio_p3_table[] = {
-	IRQ_LPC32XX_GPIO_00,
-	IRQ_LPC32XX_GPIO_01,
-	IRQ_LPC32XX_GPIO_02,
-	IRQ_LPC32XX_GPIO_03,
-	IRQ_LPC32XX_GPIO_04,
-	IRQ_LPC32XX_GPIO_05,
-};
-
 static int lpc32xx_gpio_to_irq_gpio_p3(struct gpio_chip *chip, unsigned offset)
 {
-	if (offset < ARRAY_SIZE(lpc32xx_gpio_to_irq_gpio_p3_table))
-		return lpc32xx_gpio_to_irq_gpio_p3_table[offset];
 	return -ENXIO;
 }
 
-static const char lpc32xx_gpio_to_irq_gpi_p3_table[] = {
-	IRQ_LPC32XX_GPI_00,
-	IRQ_LPC32XX_GPI_01,
-	IRQ_LPC32XX_GPI_02,
-	IRQ_LPC32XX_GPI_03,
-	IRQ_LPC32XX_GPI_04,
-	IRQ_LPC32XX_GPI_05,
-	IRQ_LPC32XX_GPI_06,
-	IRQ_LPC32XX_GPI_07,
-	IRQ_LPC32XX_GPI_08,
-	IRQ_LPC32XX_GPI_09,
-	-ENXIO, /* 10 */
-	-ENXIO, /* 11 */
-	-ENXIO, /* 12 */
-	-ENXIO, /* 13 */
-	-ENXIO, /* 14 */
-	-ENXIO, /* 15 */
-	-ENXIO, /* 16 */
-	-ENXIO, /* 17 */
-	-ENXIO, /* 18 */
-	IRQ_LPC32XX_GPI_19,
-	-ENXIO, /* 20 */
-	-ENXIO, /* 21 */
-	-ENXIO, /* 22 */
-	-ENXIO, /* 23 */
-	-ENXIO, /* 24 */
-	-ENXIO, /* 25 */
-	-ENXIO, /* 26 */
-	-ENXIO, /* 27 */
-	IRQ_LPC32XX_GPI_28,
-};
-
 static int lpc32xx_gpio_to_irq_gpi_p3(struct gpio_chip *chip, unsigned offset)
 {
-	if (offset < ARRAY_SIZE(lpc32xx_gpio_to_irq_gpi_p3_table))
-		return lpc32xx_gpio_to_irq_gpi_p3_table[offset];
 	return -ENXIO;
 }
 
diff --git a/drivers/gpio/gpio-mb86s7x.c b/drivers/gpio/gpio-mb86s7x.c
index 7fffc1d6c..d55af50e7 100644
--- a/drivers/gpio/gpio-mb86s7x.c
+++ b/drivers/gpio/gpio-mb86s7x.c
@@ -17,7 +17,6 @@
 #include <linux/io.h>
 #include <linux/init.h>
 #include <linux/clk.h>
-#include <linux/module.h>
 #include <linux/err.h>
 #include <linux/errno.h>
 #include <linux/ioport.h>
@@ -185,8 +184,6 @@ static int mb86s70_gpio_probe(struct platform_device *pdev)
 	gchip->gc.parent = &pdev->dev;
 	gchip->gc.base = -1;
 
-	platform_set_drvdata(pdev, gchip);
-
 	ret = gpiochip_add_data(&gchip->gc, gchip);
 	if (ret) {
 		dev_err(&pdev->dev, "couldn't register gpio driver\n");
@@ -210,7 +207,6 @@ static const struct of_device_id mb86s70_gpio_dt_ids[] = {
 	{ .compatible = "fujitsu,mb86s70-gpio" },
 	{ /* sentinel */ }
 };
-MODULE_DEVICE_TABLE(of, mb86s70_gpio_dt_ids);
 
 static struct platform_driver mb86s70_gpio_driver = {
 	.driver = {
@@ -225,8 +221,4 @@ static int __init mb86s70_gpio_init(void)
 {
 	return platform_driver_register(&mb86s70_gpio_driver);
 }
-module_init(mb86s70_gpio_init);
-
-MODULE_DESCRIPTION("MB86S7x GPIO Driver");
-MODULE_ALIAS("platform:mb86s70-gpio");
-MODULE_LICENSE("GPL");
+device_initcall(mb86s70_gpio_init);
diff --git a/drivers/gpio/gpio-mc9s08dz60.c b/drivers/gpio/gpio-mc9s08dz60.c
index 14f252f9e..2fcad5b9c 100644
--- a/drivers/gpio/gpio-mc9s08dz60.c
+++ b/drivers/gpio/gpio-mc9s08dz60.c
@@ -15,7 +15,7 @@
  */
 
 #include <linux/kernel.h>
-#include <linux/module.h>
+#include <linux/init.h>
 #include <linux/slab.h>
 #include <linux/i2c.h>
 #include <linux/gpio.h>
@@ -111,8 +111,6 @@ static const struct i2c_device_id mc9s08dz60_id[] = {
 	{},
 };
 
-MODULE_DEVICE_TABLE(i2c, mc9s08dz60_id);
-
 static struct i2c_driver mc9s08dz60_i2c_driver = {
 	.driver = {
 		.name = "mc9s08dz60",
@@ -120,10 +118,4 @@ static struct i2c_driver mc9s08dz60_i2c_driver = {
 	.probe = mc9s08dz60_probe,
 	.id_table = mc9s08dz60_id,
 };
-
-module_i2c_driver(mc9s08dz60_i2c_driver);
-
-MODULE_AUTHOR("Freescale Semiconductor, Inc. "
-		"Wu Guoxing <b39297@freescale.com>");
-MODULE_DESCRIPTION("mc9s08dz60 gpio function on mx35 3ds board");
-MODULE_LICENSE("GPL v2");
+builtin_i2c_driver(mc9s08dz60_i2c_driver);
diff --git a/drivers/gpio/gpio-mcp23s08.c b/drivers/gpio/gpio-mcp23s08.c
index 47e486910..ac22efc18 100644
--- a/drivers/gpio/gpio-mcp23s08.c
+++ b/drivers/gpio/gpio-mcp23s08.c
@@ -77,7 +77,6 @@ struct mcp23s08 {
 	/* lock protects the cached values */
 	struct mutex		lock;
 	struct mutex		irq_lock;
-	struct irq_domain	*irq_domain;
 
 	struct gpio_chip	chip;
 
@@ -96,11 +95,6 @@ struct mcp23s08_driver_data {
 	struct mcp23s08		chip[];
 };
 
-/* This lock class tells lockdep that GPIO irqs are in a different
- * category than their parents, so it won't report false recursion.
- */
-static struct lock_class_key gpio_lock_class;
-
 /*----------------------------------------------------------------------*/
 
 #if IS_ENABLED(CONFIG_I2C)
@@ -368,8 +362,9 @@ static irqreturn_t mcp23s08_irq(int irq, void *data)
 	for (i = 0; i < mcp->chip.ngpio; i++) {
 		if ((BIT(i) & mcp->cache[MCP_INTF]) &&
 		    ((BIT(i) & intcap & mcp->irq_rise) ||
-		     (mcp->irq_fall & ~intcap & BIT(i)))) {
-			child_irq = irq_find_mapping(mcp->irq_domain, i);
+		     (mcp->irq_fall & ~intcap & BIT(i)) ||
+		     (BIT(i) & mcp->cache[MCP_INTCON]))) {
+			child_irq = irq_find_mapping(mcp->chip.irqdomain, i);
 			handle_nested_irq(child_irq);
 		}
 	}
@@ -377,16 +372,10 @@ static irqreturn_t mcp23s08_irq(int irq, void *data)
 	return IRQ_HANDLED;
 }
 
-static int mcp23s08_gpio_to_irq(struct gpio_chip *chip, unsigned offset)
-{
-	struct mcp23s08 *mcp = gpiochip_get_data(chip);
-
-	return irq_find_mapping(mcp->irq_domain, offset);
-}
-
 static void mcp23s08_irq_mask(struct irq_data *data)
 {
-	struct mcp23s08 *mcp = irq_data_get_irq_chip_data(data);
+	struct gpio_chip *gc = irq_data_get_irq_chip_data(data);
+	struct mcp23s08 *mcp = gpiochip_get_data(gc);
 	unsigned int pos = data->hwirq;
 
 	mcp->cache[MCP_GPINTEN] &= ~BIT(pos);
@@ -394,7 +383,8 @@ static void mcp23s08_irq_mask(struct irq_data *data)
 
 static void mcp23s08_irq_unmask(struct irq_data *data)
 {
-	struct mcp23s08 *mcp = irq_data_get_irq_chip_data(data);
+	struct gpio_chip *gc = irq_data_get_irq_chip_data(data);
+	struct mcp23s08 *mcp = gpiochip_get_data(gc);
 	unsigned int pos = data->hwirq;
 
 	mcp->cache[MCP_GPINTEN] |= BIT(pos);
@@ -402,7 +392,8 @@ static void mcp23s08_irq_unmask(struct irq_data *data)
 
 static int mcp23s08_irq_set_type(struct irq_data *data, unsigned int type)
 {
-	struct mcp23s08 *mcp = irq_data_get_irq_chip_data(data);
+	struct gpio_chip *gc = irq_data_get_irq_chip_data(data);
+	struct mcp23s08 *mcp = gpiochip_get_data(gc);
 	unsigned int pos = data->hwirq;
 	int status = 0;
 
@@ -418,6 +409,12 @@ static int mcp23s08_irq_set_type(struct irq_data *data, unsigned int type)
 		mcp->cache[MCP_INTCON] &= ~BIT(pos);
 		mcp->irq_rise &= ~BIT(pos);
 		mcp->irq_fall |= BIT(pos);
+	} else if (type & IRQ_TYPE_LEVEL_HIGH) {
+		mcp->cache[MCP_INTCON] |= BIT(pos);
+		mcp->cache[MCP_DEFVAL] &= ~BIT(pos);
+	} else if (type & IRQ_TYPE_LEVEL_LOW) {
+		mcp->cache[MCP_INTCON] |= BIT(pos);
+		mcp->cache[MCP_DEFVAL] |= BIT(pos);
 	} else
 		return -EINVAL;
 
@@ -426,14 +423,16 @@ static int mcp23s08_irq_set_type(struct irq_data *data, unsigned int type)
 
 static void mcp23s08_irq_bus_lock(struct irq_data *data)
 {
-	struct mcp23s08 *mcp = irq_data_get_irq_chip_data(data);
+	struct gpio_chip *gc = irq_data_get_irq_chip_data(data);
+	struct mcp23s08 *mcp = gpiochip_get_data(gc);
 
 	mutex_lock(&mcp->irq_lock);
 }
 
 static void mcp23s08_irq_bus_unlock(struct irq_data *data)
 {
-	struct mcp23s08 *mcp = irq_data_get_irq_chip_data(data);
+	struct gpio_chip *gc = irq_data_get_irq_chip_data(data);
+	struct mcp23s08 *mcp = gpiochip_get_data(gc);
 
 	mutex_lock(&mcp->lock);
 	mcp->ops->write(mcp, MCP_GPINTEN, mcp->cache[MCP_GPINTEN]);
@@ -443,27 +442,6 @@ static void mcp23s08_irq_bus_unlock(struct irq_data *data)
 	mutex_unlock(&mcp->irq_lock);
 }
 
-static int mcp23s08_irq_reqres(struct irq_data *data)
-{
-	struct mcp23s08 *mcp = irq_data_get_irq_chip_data(data);
-
-	if (gpiochip_lock_as_irq(&mcp->chip, data->hwirq)) {
-		dev_err(mcp->chip.parent,
-			"unable to lock HW IRQ %lu for IRQ usage\n",
-			data->hwirq);
-		return -EINVAL;
-	}
-
-	return 0;
-}
-
-static void mcp23s08_irq_relres(struct irq_data *data)
-{
-	struct mcp23s08 *mcp = irq_data_get_irq_chip_data(data);
-
-	gpiochip_unlock_as_irq(&mcp->chip, data->hwirq);
-}
-
 static struct irq_chip mcp23s08_irq_chip = {
 	.name = "gpio-mcp23xxx",
 	.irq_mask = mcp23s08_irq_mask,
@@ -471,24 +449,16 @@ static struct irq_chip mcp23s08_irq_chip = {
 	.irq_set_type = mcp23s08_irq_set_type,
 	.irq_bus_lock = mcp23s08_irq_bus_lock,
 	.irq_bus_sync_unlock = mcp23s08_irq_bus_unlock,
-	.irq_request_resources = mcp23s08_irq_reqres,
-	.irq_release_resources = mcp23s08_irq_relres,
 };
 
 static int mcp23s08_irq_setup(struct mcp23s08 *mcp)
 {
 	struct gpio_chip *chip = &mcp->chip;
-	int err, irq, j;
+	int err;
 	unsigned long irqflags = IRQF_ONESHOT | IRQF_SHARED;
 
 	mutex_init(&mcp->irq_lock);
 
-	mcp->irq_domain = irq_domain_add_linear(chip->parent->of_node,
-						chip->ngpio,
-						&irq_domain_simple_ops, mcp);
-	if (!mcp->irq_domain)
-		return -ENODEV;
-
 	if (mcp->irq_active_high)
 		irqflags |= IRQF_TRIGGER_HIGH;
 	else
@@ -503,30 +473,23 @@ static int mcp23s08_irq_setup(struct mcp23s08 *mcp)
 		return err;
 	}
 
-	chip->to_irq = mcp23s08_gpio_to_irq;
-
-	for (j = 0; j < mcp->chip.ngpio; j++) {
-		irq = irq_create_mapping(mcp->irq_domain, j);
-		irq_set_lockdep_class(irq, &gpio_lock_class);
-		irq_set_chip_data(irq, mcp);
-		irq_set_chip(irq, &mcp23s08_irq_chip);
-		irq_set_nested_thread(irq, true);
-		irq_set_noprobe(irq);
+	err =  gpiochip_irqchip_add(chip,
+				    &mcp23s08_irq_chip,
+				    0,
+				    handle_simple_irq,
+				    IRQ_TYPE_NONE);
+	if (err) {
+		dev_err(chip->parent,
+			"could not connect irqchip to gpiochip: %d\n", err);
+		return err;
 	}
-	return 0;
-}
 
-static void mcp23s08_irq_teardown(struct mcp23s08 *mcp)
-{
-	unsigned int irq, i;
+	gpiochip_set_chained_irqchip(chip,
+				     &mcp23s08_irq_chip,
+				     mcp->irq,
+				     NULL);
 
-	for (i = 0; i < mcp->chip.ngpio; i++) {
-		irq = irq_find_mapping(mcp->irq_domain, i);
-		if (irq > 0)
-			irq_dispose_mapping(irq);
-	}
-
-	irq_domain_remove(mcp->irq_domain);
+	return 0;
 }
 
 /*----------------------------------------------------------------------*/
@@ -721,7 +684,6 @@ static int mcp23s08_probe_one(struct mcp23s08 *mcp, struct device *dev,
 	if (mcp->irq && mcp->irq_controller) {
 		status = mcp23s08_irq_setup(mcp);
 		if (status) {
-			mcp23s08_irq_teardown(mcp);
 			goto fail;
 		}
 	}
@@ -847,9 +809,6 @@ static int mcp230xx_remove(struct i2c_client *client)
 {
 	struct mcp23s08 *mcp = i2c_get_clientdata(client);
 
-	if (client->irq && mcp->irq_controller)
-		mcp23s08_irq_teardown(mcp);
-
 	gpiochip_remove(&mcp->chip);
 	kfree(mcp);
 
@@ -1017,8 +976,6 @@ static int mcp23s08_remove(struct spi_device *spi)
 		if (!data->mcp[addr])
 			continue;
 
-		if (spi->irq && data->mcp[addr]->irq_controller)
-			mcp23s08_irq_teardown(data->mcp[addr]);
 		gpiochip_remove(&data->mcp[addr]->chip);
 	}
 
diff --git a/drivers/gpio/gpio-menz127.c b/drivers/gpio/gpio-menz127.c
index c5c9599a3..cc103aff4 100644
--- a/drivers/gpio/gpio-menz127.c
+++ b/drivers/gpio/gpio-menz127.c
@@ -35,7 +35,6 @@
 struct men_z127_gpio {
 	struct gpio_chip gc;
 	void __iomem *reg_base;
-	struct mcb_device *mdev;
 	struct resource *mem;
 };
 
@@ -43,7 +42,7 @@ static int men_z127_debounce(struct gpio_chip *gc, unsigned gpio,
 			     unsigned debounce)
 {
 	struct men_z127_gpio *priv = gpiochip_get_data(gc);
-	struct device *dev = &priv->mdev->dev;
+	struct device *dev = gc->parent;
 	unsigned int rnd;
 	u32 db_en, db_cnt;
 
@@ -88,21 +87,25 @@ static int men_z127_debounce(struct gpio_chip *gc, unsigned gpio,
 	return 0;
 }
 
-static int men_z127_request(struct gpio_chip *gc, unsigned gpio_pin)
+static int men_z127_set_single_ended(struct gpio_chip *gc,
+				     unsigned offset,
+				     enum single_ended_mode mode)
 {
 	struct men_z127_gpio *priv = gpiochip_get_data(gc);
 	u32 od_en;
 
-	if (gpio_pin >= gc->ngpio)
-		return -EINVAL;
+	if (mode != LINE_MODE_OPEN_DRAIN &&
+	    mode != LINE_MODE_PUSH_PULL)
+		return -ENOTSUPP;
 
 	spin_lock(&gc->bgpio_lock);
 	od_en = readl(priv->reg_base + MEN_Z127_ODER);
 
-	if (gpiochip_line_is_open_drain(gc, gpio_pin))
-		od_en |= BIT(gpio_pin);
+	if (mode == LINE_MODE_OPEN_DRAIN)
+		od_en |= BIT(offset);
 	else
-		od_en &= ~BIT(gpio_pin);
+		/* Implicitly LINE_MODE_PUSH_PULL */
+		od_en &= ~BIT(offset);
 
 	writel(od_en, priv->reg_base + MEN_Z127_ODER);
 	spin_unlock(&gc->bgpio_lock);
@@ -135,7 +138,6 @@ static int men_z127_probe(struct mcb_device *mdev,
 		goto err_release;
 	}
 
-	men_z127_gpio->mdev = mdev;
 	mcb_set_drvdata(mdev, men_z127_gpio);
 
 	ret = bgpio_init(&men_z127_gpio->gc, &mdev->dev, 4,
@@ -148,7 +150,7 @@ static int men_z127_probe(struct mcb_device *mdev,
 		goto err_unmap;
 
 	men_z127_gpio->gc.set_debounce = men_z127_debounce;
-	men_z127_gpio->gc.request = men_z127_request;
+	men_z127_gpio->gc.set_single_ended = men_z127_set_single_ended;
 
 	ret = gpiochip_add_data(&men_z127_gpio->gc, men_z127_gpio);
 	if (ret) {
diff --git a/drivers/gpio/gpio-generic.c b/drivers/gpio/gpio-mmio.c
index 54cddfa98..6c1cb3b8c 100644
--- a/drivers/gpio/gpio-generic.c
+++ b/drivers/gpio/gpio-mmio.c
@@ -549,7 +549,7 @@ int bgpio_init(struct gpio_chip *gc, struct device *dev,
 }
 EXPORT_SYMBOL_GPL(bgpio_init);
 
-#ifdef CONFIG_GPIO_GENERIC_PLATFORM
+#if IS_ENABLED(CONFIG_GPIO_GENERIC_PLATFORM)
 
 static void __iomem *bgpio_map(struct platform_device *pdev,
 			       const char *name,
diff --git a/drivers/gpio/gpio-moxart.c b/drivers/gpio/gpio-moxart.c
index f02d0b490..d58d38906 100644
--- a/drivers/gpio/gpio-moxart.c
+++ b/drivers/gpio/gpio-moxart.c
@@ -15,7 +15,6 @@
 #include <linux/irq.h>
 #include <linux/io.h>
 #include <linux/platform_device.h>
-#include <linux/module.h>
 #include <linux/of_address.h>
 #include <linux/of_gpio.h>
 #include <linux/pinctrl/consumer.h>
@@ -82,8 +81,4 @@ static struct platform_driver moxart_gpio_driver = {
 	},
 	.probe	= moxart_gpio_probe,
 };
-module_platform_driver(moxart_gpio_driver);
-
-MODULE_DESCRIPTION("MOXART GPIO chip driver");
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Jonas Jensen <jonas.jensen@gmail.com>");
+builtin_platform_driver(moxart_gpio_driver);
diff --git a/drivers/gpio/gpio-mvebu.c b/drivers/gpio/gpio-mvebu.c
index 11c6582ef..cd5dc2732 100644
--- a/drivers/gpio/gpio-mvebu.c
+++ b/drivers/gpio/gpio-mvebu.c
@@ -34,7 +34,7 @@
  */
 
 #include <linux/err.h>
-#include <linux/module.h>
+#include <linux/init.h>
 #include <linux/gpio.h>
 #include <linux/irq.h>
 #include <linux/slab.h>
@@ -557,7 +557,6 @@ static const struct of_device_id mvebu_gpio_of_match[] = {
 		/* sentinel */
 	},
 };
-MODULE_DEVICE_TABLE(of, mvebu_gpio_of_match);
 
 static int mvebu_gpio_suspend(struct platform_device *pdev, pm_message_t state)
 {
@@ -838,4 +837,4 @@ static struct platform_driver mvebu_gpio_driver = {
 	.suspend        = mvebu_gpio_suspend,
 	.resume         = mvebu_gpio_resume,
 };
-module_platform_driver(mvebu_gpio_driver);
+builtin_platform_driver(mvebu_gpio_driver);
diff --git a/drivers/gpio/gpio-octeon.c b/drivers/gpio/gpio-octeon.c
index 47aead1ed..96a8a8cb2 100644
--- a/drivers/gpio/gpio-octeon.c
+++ b/drivers/gpio/gpio-octeon.c
@@ -83,6 +83,7 @@ static int octeon_gpio_probe(struct platform_device *pdev)
 	struct octeon_gpio *gpio;
 	struct gpio_chip *chip;
 	struct resource *res_mem;
+	void __iomem *reg_base;
 	int err = 0;
 
 	gpio = devm_kzalloc(&pdev->dev, sizeof(*gpio), GFP_KERNEL);
@@ -91,21 +92,11 @@ static int octeon_gpio_probe(struct platform_device *pdev)
 	chip = &gpio->chip;
 
 	res_mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (res_mem == NULL) {
-		dev_err(&pdev->dev, "found no memory resource\n");
-		err = -ENXIO;
-		goto out;
-	}
-	if (!devm_request_mem_region(&pdev->dev, res_mem->start,
-					resource_size(res_mem),
-				     res_mem->name)) {
-		dev_err(&pdev->dev, "request_mem_region failed\n");
-		err = -ENXIO;
-		goto out;
-	}
-	gpio->register_base = (u64)devm_ioremap(&pdev->dev, res_mem->start,
-						resource_size(res_mem));
+	reg_base = devm_ioremap_resource(&pdev->dev, res_mem);
+	if (IS_ERR(reg_base))
+		return PTR_ERR(reg_base);
 
+	gpio->register_base = (u64)reg_base;
 	pdev->dev.platform_data = chip;
 	chip->label = "octeon-gpio";
 	chip->parent = &pdev->dev;
@@ -119,14 +110,13 @@ static int octeon_gpio_probe(struct platform_device *pdev)
 	chip->set = octeon_gpio_set;
 	err = devm_gpiochip_add_data(&pdev->dev, chip, gpio);
 	if (err)
-		goto out;
+		return err;
 
 	dev_info(&pdev->dev, "OCTEON GPIO driver probed.\n");
-out:
-	return err;
+	return 0;
 }
 
-static struct of_device_id octeon_gpio_match[] = {
+static const struct of_device_id octeon_gpio_match[] = {
 	{
 		.compatible = "cavium,octeon-3860-gpio",
 	},
diff --git a/drivers/gpio/gpio-omap.c b/drivers/gpio/gpio-omap.c
index 551dfa9d9..b98ede78c 100644
--- a/drivers/gpio/gpio-omap.c
+++ b/drivers/gpio/gpio-omap.c
@@ -611,51 +611,12 @@ static inline void omap_set_gpio_irqenable(struct gpio_bank *bank,
 		omap_disable_gpio_irqbank(bank, BIT(offset));
 }
 
-/*
- * Note that ENAWAKEUP needs to be enabled in GPIO_SYSCONFIG register.
- * 1510 does not seem to have a wake-up register. If JTAG is connected
- * to the target, system will wake up always on GPIO events. While
- * system is running all registered GPIO interrupts need to have wake-up
- * enabled. When system is suspended, only selected GPIO interrupts need
- * to have wake-up enabled.
- */
-static int omap_set_gpio_wakeup(struct gpio_bank *bank, unsigned offset,
-				int enable)
-{
-	u32 gpio_bit = BIT(offset);
-	unsigned long flags;
-
-	if (bank->non_wakeup_gpios & gpio_bit) {
-		dev_err(bank->chip.parent,
-			"Unable to modify wakeup on non-wakeup GPIO%d\n",
-			offset);
-		return -EINVAL;
-	}
-
-	raw_spin_lock_irqsave(&bank->lock, flags);
-	if (enable)
-		bank->context.wake_en |= gpio_bit;
-	else
-		bank->context.wake_en &= ~gpio_bit;
-
-	writel_relaxed(bank->context.wake_en, bank->base + bank->regs->wkup_en);
-	raw_spin_unlock_irqrestore(&bank->lock, flags);
-
-	return 0;
-}
-
 /* Use disable_irq_wake() and enable_irq_wake() functions from drivers */
 static int omap_gpio_wake_enable(struct irq_data *d, unsigned int enable)
 {
 	struct gpio_bank *bank = omap_irq_data_get_bank(d);
-	unsigned offset = d->hwirq;
-	int ret;
 
-	ret = omap_set_gpio_wakeup(bank, offset, enable);
-	if (!ret)
-		ret = irq_set_irq_wake(bank->irq, enable);
-
-	return ret;
+	return irq_set_irq_wake(bank->irq, enable);
 }
 
 static int omap_gpio_request(struct gpio_chip *chip, unsigned offset)
@@ -1187,6 +1148,7 @@ static int omap_gpio_probe(struct platform_device *pdev)
 	irqc->irq_bus_lock = omap_gpio_irq_bus_lock,
 	irqc->irq_bus_sync_unlock = gpio_irq_bus_sync_unlock,
 	irqc->name = dev_name(&pdev->dev);
+	irqc->flags = IRQCHIP_MASK_ON_SUSPEND;
 
 	bank->irq = platform_get_irq(pdev, 0);
 	if (bank->irq <= 0) {
diff --git a/drivers/gpio/gpio-palmas.c b/drivers/gpio/gpio-palmas.c
index 6f27b3d94..e248707ca 100644
--- a/drivers/gpio/gpio-palmas.c
+++ b/drivers/gpio/gpio-palmas.c
@@ -20,7 +20,7 @@
 
 #include <linux/gpio.h>
 #include <linux/kernel.h>
-#include <linux/module.h>
+#include <linux/init.h>
 #include <linux/mfd/palmas.h>
 #include <linux/of.h>
 #include <linux/of_device.h>
@@ -218,14 +218,3 @@ static int __init palmas_gpio_init(void)
 	return platform_driver_register(&palmas_gpio_driver);
 }
 subsys_initcall(palmas_gpio_init);
-
-static void __exit palmas_gpio_exit(void)
-{
-	platform_driver_unregister(&palmas_gpio_driver);
-}
-module_exit(palmas_gpio_exit);
-
-MODULE_ALIAS("platform:palmas-gpio");
-MODULE_AUTHOR("Laxman Dewangan <ldewangan@nvidia.com>");
-MODULE_DESCRIPTION("GPIO driver for TI Palmas series PMICs");
-MODULE_LICENSE("GPL v2");
diff --git a/drivers/gpio/gpio-pca953x.c b/drivers/gpio/gpio-pca953x.c
index e66084c29..5e3be32eb 100644
--- a/drivers/gpio/gpio-pca953x.c
+++ b/drivers/gpio/gpio-pca953x.c
@@ -38,8 +38,13 @@
 #define PCA957X_MSK		6
 #define PCA957X_INTS		7
 
+#define PCAL953X_IN_LATCH	34
+#define PCAL953X_INT_MASK	37
+#define PCAL953X_INT_STAT	38
+
 #define PCA_GPIO_MASK		0x00FF
 #define PCA_INT			0x0100
+#define PCA_PCAL			0x0200
 #define PCA953X_TYPE		0x1000
 #define PCA957X_TYPE		0x2000
 #define PCA_TYPE_MASK		0xF000
@@ -77,7 +82,7 @@ static const struct i2c_device_id pca953x_id[] = {
 MODULE_DEVICE_TABLE(i2c, pca953x_id);
 
 static const struct acpi_device_id pca953x_acpi_ids[] = {
-	{ "INT3491", 16 | PCA953X_TYPE | PCA_INT, },
+	{ "INT3491", 16 | PCA953X_TYPE | PCA_INT | PCA_PCAL, },
 	{ }
 };
 MODULE_DEVICE_TABLE(acpi, pca953x_acpi_ids);
@@ -437,6 +442,18 @@ static void pca953x_irq_bus_sync_unlock(struct irq_data *d)
 	struct pca953x_chip *chip = gpiochip_get_data(gc);
 	u8 new_irqs;
 	int level, i;
+	u8 invert_irq_mask[MAX_BANK];
+
+	if (chip->driver_data & PCA_PCAL) {
+		/* Enable latch on interrupt-enabled inputs */
+		pca953x_write_regs(chip, PCAL953X_IN_LATCH, chip->irq_mask);
+
+		for (i = 0; i < NBANK(chip); i++)
+			invert_irq_mask[i] = ~chip->irq_mask[i];
+
+		/* Unmask enabled interrupts */
+		pca953x_write_regs(chip, PCAL953X_INT_MASK, invert_irq_mask);
+	}
 
 	/* Look for any newly setup interrupt */
 	for (i = 0; i < NBANK(chip); i++) {
@@ -498,6 +515,29 @@ static bool pca953x_irq_pending(struct pca953x_chip *chip, u8 *pending)
 	u8 trigger[MAX_BANK];
 	int ret, i, offset = 0;
 
+	if (chip->driver_data & PCA_PCAL) {
+		/* Read the current interrupt status from the device */
+		ret = pca953x_read_regs(chip, PCAL953X_INT_STAT, trigger);
+		if (ret)
+			return false;
+
+		/* Check latched inputs and clear interrupt status */
+		ret = pca953x_read_regs(chip, PCA953X_INPUT, cur_stat);
+		if (ret)
+			return false;
+
+		for (i = 0; i < NBANK(chip); i++) {
+			/* Apply filter for rising/falling edge selection */
+			pending[i] = (~cur_stat[i] & chip->irq_trig_fall[i]) |
+				(cur_stat[i] & chip->irq_trig_raise[i]);
+			pending[i] &= trigger[i];
+			if (pending[i])
+				pending_seen = true;
+		}
+
+		return pending_seen;
+	}
+
 	switch (chip->chip_type) {
 	case PCA953X_TYPE:
 		offset = PCA953X_INPUT;
diff --git a/drivers/gpio/gpio-pl061.c b/drivers/gpio/gpio-pl061.c
index 5cb38212b..6e3c14306 100644
--- a/drivers/gpio/gpio-pl061.c
+++ b/drivers/gpio/gpio-pl061.c
@@ -1,6 +1,8 @@
 /*
  * Copyright (C) 2008, 2009 Provigent Ltd.
  *
+ * Author: Baruch Siach <baruch@tkos.co.il>
+ *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 as
  * published by the Free Software Foundation.
@@ -11,7 +13,7 @@
  */
 #include <linux/spinlock.h>
 #include <linux/errno.h>
-#include <linux/module.h>
+#include <linux/init.h>
 #include <linux/io.h>
 #include <linux/ioport.h>
 #include <linux/interrupt.h>
@@ -59,15 +61,19 @@ struct pl061_gpio {
 #endif
 };
 
+static int pl061_get_direction(struct gpio_chip *gc, unsigned offset)
+{
+	struct pl061_gpio *chip = gpiochip_get_data(gc);
+
+	return !(readb(chip->base + GPIODIR) & BIT(offset));
+}
+
 static int pl061_direction_input(struct gpio_chip *gc, unsigned offset)
 {
 	struct pl061_gpio *chip = gpiochip_get_data(gc);
 	unsigned long flags;
 	unsigned char gpiodir;
 
-	if (offset >= gc->ngpio)
-		return -EINVAL;
-
 	spin_lock_irqsave(&chip->lock, flags);
 	gpiodir = readb(chip->base + GPIODIR);
 	gpiodir &= ~(BIT(offset));
@@ -84,9 +90,6 @@ static int pl061_direction_output(struct gpio_chip *gc, unsigned offset,
 	unsigned long flags;
 	unsigned char gpiodir;
 
-	if (offset >= gc->ngpio)
-		return -EINVAL;
-
 	spin_lock_irqsave(&chip->lock, flags);
 	writeb(!!value << offset, chip->base + (BIT(offset + 2)));
 	gpiodir = readb(chip->base + GPIODIR);
@@ -319,6 +322,7 @@ static int pl061_probe(struct amba_device *adev, const struct amba_id *id)
 		chip->gc.free = gpiochip_generic_free;
 	}
 
+	chip->gc.get_direction = pl061_get_direction;
 	chip->gc.direction_input = pl061_direction_input;
 	chip->gc.direction_output = pl061_direction_output;
 	chip->gc.get = pl061_get_value;
@@ -429,8 +433,6 @@ static struct amba_id pl061_ids[] = {
 	{ 0, 0 },
 };
 
-MODULE_DEVICE_TABLE(amba, pl061_ids);
-
 static struct amba_driver pl061_gpio_driver = {
 	.drv = {
 		.name	= "pl061_gpio",
@@ -446,8 +448,4 @@ static int __init pl061_gpio_init(void)
 {
 	return amba_driver_register(&pl061_gpio_driver);
 }
-module_init(pl061_gpio_init);
-
-MODULE_AUTHOR("Baruch Siach <baruch@tkos.co.il>");
-MODULE_DESCRIPTION("PL061 GPIO driver");
-MODULE_LICENSE("GPL");
+device_initcall(pl061_gpio_init);
diff --git a/drivers/gpio/gpio-rc5t583.c b/drivers/gpio/gpio-rc5t583.c
index 1d6100fa3..3b4dc1a9a 100644
--- a/drivers/gpio/gpio-rc5t583.c
+++ b/drivers/gpio/gpio-rc5t583.c
@@ -23,7 +23,6 @@
 #include <linux/init.h>
 #include <linux/kernel.h>
 #include <linux/slab.h>
-#include <linux/module.h>
 #include <linux/platform_device.h>
 #include <linux/device.h>
 #include <linux/gpio.h>
@@ -152,14 +151,3 @@ static int __init rc5t583_gpio_init(void)
 	return platform_driver_register(&rc5t583_gpio_driver);
 }
 subsys_initcall(rc5t583_gpio_init);
-
-static void __exit rc5t583_gpio_exit(void)
-{
-	platform_driver_unregister(&rc5t583_gpio_driver);
-}
-module_exit(rc5t583_gpio_exit);
-
-MODULE_AUTHOR("Laxman Dewangan <ldewangan@nvidia.com>");
-MODULE_DESCRIPTION("GPIO interface for RC5T583");
-MODULE_LICENSE("GPL v2");
-MODULE_ALIAS("platform:rc5t583-gpio");
diff --git a/drivers/gpio/gpio-rcar.c b/drivers/gpio/gpio-rcar.c
index 4d9a315cf..681c93fb9 100644
--- a/drivers/gpio/gpio-rcar.c
+++ b/drivers/gpio/gpio-rcar.c
@@ -284,6 +284,25 @@ static void gpio_rcar_set(struct gpio_chip *chip, unsigned offset, int value)
 	spin_unlock_irqrestore(&p->lock, flags);
 }
 
+static void gpio_rcar_set_multiple(struct gpio_chip *chip, unsigned long *mask,
+				   unsigned long *bits)
+{
+	struct gpio_rcar_priv *p = gpiochip_get_data(chip);
+	unsigned long flags;
+	u32 val, bankmask;
+
+	bankmask = mask[0] & GENMASK(chip->ngpio - 1, 0);
+	if (!bankmask)
+		return;
+
+	spin_lock_irqsave(&p->lock, flags);
+	val = gpio_rcar_read(p, OUTDT);
+	val &= ~bankmask;
+	val |= (bankmask & bits[0]);
+	gpio_rcar_write(p, OUTDT, val);
+	spin_unlock_irqrestore(&p->lock, flags);
+}
+
 static int gpio_rcar_direction_output(struct gpio_chip *chip, unsigned offset,
 				      int value)
 {
@@ -425,6 +444,7 @@ static int gpio_rcar_probe(struct platform_device *pdev)
 	gpio_chip->get = gpio_rcar_get;
 	gpio_chip->direction_output = gpio_rcar_direction_output;
 	gpio_chip->set = gpio_rcar_set;
+	gpio_chip->set_multiple = gpio_rcar_set_multiple;
 	gpio_chip->label = name;
 	gpio_chip->parent = dev;
 	gpio_chip->owner = THIS_MODULE;
diff --git a/drivers/gpio/gpio-sodaville.c b/drivers/gpio/gpio-sodaville.c
index e3cb6772f..7da9e6c45 100644
--- a/drivers/gpio/gpio-sodaville.c
+++ b/drivers/gpio/gpio-sodaville.c
@@ -3,6 +3,8 @@
  *
  *  Copyright (c) 2010, 2011 Intel Corporation
  *
+ *  Author: Hans J. Koch <hjk@linutronix.de>
+ *
  *  This program is free software; you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License 2 as published
  *  by the Free Software Foundation.
@@ -15,7 +17,6 @@
 #include <linux/irq.h>
 #include <linux/interrupt.h>
 #include <linux/kernel.h>
-#include <linux/module.h>
 #include <linux/pci.h>
 #include <linux/platform_device.h>
 #include <linux/of_irq.h>
@@ -257,34 +258,17 @@ done:
 	return ret;
 }
 
-static void sdv_gpio_remove(struct pci_dev *pdev)
-{
-	struct sdv_gpio_chip_data *sd = pci_get_drvdata(pdev);
-
-	free_irq(pdev->irq, sd);
-	irq_free_descs(sd->irq_base, SDV_NUM_PUB_GPIOS);
-
-	gpiochip_remove(&sd->chip);
-	pci_release_region(pdev, GPIO_BAR);
-	iounmap(sd->gpio_pub_base);
-	pci_disable_device(pdev);
-	kfree(sd);
-}
-
 static const struct pci_device_id sdv_gpio_pci_ids[] = {
 	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_SDV_GPIO) },
 	{ 0, },
 };
 
 static struct pci_driver sdv_gpio_driver = {
+	.driver = {
+		.suppress_bind_attrs = true,
+	},
 	.name = DRV_NAME,
 	.id_table = sdv_gpio_pci_ids,
 	.probe = sdv_gpio_probe,
-	.remove = sdv_gpio_remove,
 };
-
-module_pci_driver(sdv_gpio_driver);
-
-MODULE_AUTHOR("Hans J. Koch <hjk@linutronix.de>");
-MODULE_DESCRIPTION("GPIO interface for Intel Sodaville SoCs");
-MODULE_LICENSE("GPL v2");
+builtin_pci_driver(sdv_gpio_driver);
diff --git a/drivers/gpio/gpio-sta2x11.c b/drivers/gpio/gpio-sta2x11.c
index 0d5b8c525..853ca23ca 100644
--- a/drivers/gpio/gpio-sta2x11.c
+++ b/drivers/gpio/gpio-sta2x11.c
@@ -20,7 +20,7 @@
  *
  */
 
-#include <linux/module.h>
+#include <linux/init.h>
 #include <linux/kernel.h>
 #include <linux/slab.h>
 #include <linux/gpio.h>
@@ -432,8 +432,4 @@ static struct platform_driver sta2x11_gpio_platform_driver = {
 	},
 	.probe = gsta_probe,
 };
-
-module_platform_driver(sta2x11_gpio_platform_driver);
-
-MODULE_LICENSE("GPL v2");
-MODULE_DESCRIPTION("sta2x11_gpio GPIO driver");
+builtin_platform_driver(sta2x11_gpio_platform_driver);
diff --git a/drivers/gpio/gpio-stmpe.c b/drivers/gpio/gpio-stmpe.c
index 5197edf1a..6f7af28b8 100644
--- a/drivers/gpio/gpio-stmpe.c
+++ b/drivers/gpio/gpio-stmpe.c
@@ -5,7 +5,6 @@
  * Author: Rabin Vincent <rabin.vincent@stericsson.com> for ST-Ericsson
  */
 
-#include <linux/module.h>
 #include <linux/init.h>
 #include <linux/platform_device.h>
 #include <linux/slab.h>
@@ -413,23 +412,13 @@ out_free:
 	return ret;
 }
 
-static int stmpe_gpio_remove(struct platform_device *pdev)
-{
-	struct stmpe_gpio *stmpe_gpio = platform_get_drvdata(pdev);
-	struct stmpe *stmpe = stmpe_gpio->stmpe;
-
-	gpiochip_remove(&stmpe_gpio->chip);
-	stmpe_disable(stmpe, STMPE_BLOCK_GPIO);
-	kfree(stmpe_gpio);
-
-	return 0;
-}
-
 static struct platform_driver stmpe_gpio_driver = {
-	.driver.name	= "stmpe-gpio",
-	.driver.owner	= THIS_MODULE,
+	.driver = {
+		.suppress_bind_attrs	= true,
+		.name			= "stmpe-gpio",
+		.owner			= THIS_MODULE,
+	},
 	.probe		= stmpe_gpio_probe,
-	.remove		= stmpe_gpio_remove,
 };
 
 static int __init stmpe_gpio_init(void)
@@ -437,13 +426,3 @@ static int __init stmpe_gpio_init(void)
 	return platform_driver_register(&stmpe_gpio_driver);
 }
 subsys_initcall(stmpe_gpio_init);
-
-static void __exit stmpe_gpio_exit(void)
-{
-	platform_driver_unregister(&stmpe_gpio_driver);
-}
-module_exit(stmpe_gpio_exit);
-
-MODULE_LICENSE("GPL v2");
-MODULE_DESCRIPTION("STMPExxxx GPIO driver");
-MODULE_AUTHOR("Rabin Vincent <rabin.vincent@stericsson.com>");
diff --git a/drivers/gpio/gpio-sx150x.c b/drivers/gpio/gpio-sx150x.c
index d387eb524..a177ebd92 100644
--- a/drivers/gpio/gpio-sx150x.c
+++ b/drivers/gpio/gpio-sx150x.c
@@ -1,5 +1,9 @@
 /* Copyright (c) 2010, Code Aurora Forum. All rights reserved.
  *
+ * Driver for Semtech SX150X I2C GPIO Expanders
+ *
+ * Author: Gregory Bean <gbean@codeaurora.org>
+ *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 and
  * only version 2 as published by the Free Software Foundation.
@@ -19,10 +23,8 @@
 #include <linux/init.h>
 #include <linux/interrupt.h>
 #include <linux/irq.h>
-#include <linux/module.h>
 #include <linux/mutex.h>
 #include <linux/slab.h>
-#include <linux/i2c/sx150x.h>
 #include <linux/of.h>
 #include <linux/of_address.h>
 #include <linux/of_irq.h>
@@ -82,6 +84,57 @@ struct sx150x_device_data {
 	} pri;
 };
 
+/**
+ * struct sx150x_platform_data - config data for SX150x driver
+ * @gpio_base: The index number of the first GPIO assigned to this
+ *             GPIO expander.  The expander will create a block of
+ *             consecutively numbered gpios beginning at the given base,
+ *             with the size of the block depending on the model of the
+ *             expander chip.
+ * @oscio_is_gpo: If set to true, the driver will configure OSCIO as a GPO
+ *                instead of as an oscillator, increasing the size of the
+ *                GP(I)O pool created by this expander by one.  The
+ *                output-only GPO pin will be added at the end of the block.
+ * @io_pullup_ena: A bit-mask which enables or disables the pull-up resistor
+ *                 for each IO line in the expander.  Setting the bit at
+ *                 position n will enable the pull-up for the IO at
+ *                 the corresponding offset.  For chips with fewer than
+ *                 16 IO pins, high-end bits are ignored.
+ * @io_pulldn_ena: A bit-mask which enables-or disables the pull-down
+ *                 resistor for each IO line in the expander. Setting the
+ *                 bit at position n will enable the pull-down for the IO at
+ *                 the corresponding offset.  For chips with fewer than
+ *                 16 IO pins, high-end bits are ignored.
+ * @io_polarity: A bit-mask which enables polarity inversion for each IO line
+ *               in the expander.  Setting the bit at position n inverts
+ *               the polarity of that IO line, while clearing it results
+ *               in normal polarity. For chips with fewer than 16 IO pins,
+ *               high-end bits are ignored.
+ * @irq_summary: The 'summary IRQ' line to which the GPIO expander's INT line
+ *               is connected, via which it reports interrupt events
+ *               across all GPIO lines.  This must be a real,
+ *               pre-existing IRQ line.
+ *               Setting this value < 0 disables the irq_chip functionality
+ *               of the driver.
+ * @irq_base: The first 'virtual IRQ' line at which our block of GPIO-based
+ *            IRQ lines will appear.  Similarly to gpio_base, the expander
+ *            will create a block of irqs beginning at this number.
+ *            This value is ignored if irq_summary is < 0.
+ * @reset_during_probe: If set to true, the driver will trigger a full
+ *                      reset of the chip at the beginning of the probe
+ *                      in order to place it in a known state.
+ */
+struct sx150x_platform_data {
+	unsigned gpio_base;
+	bool     oscio_is_gpo;
+	u16      io_pullup_ena;
+	u16      io_pulldn_ena;
+	u16      io_polarity;
+	int      irq_summary;
+	unsigned irq_base;
+	bool     reset_during_probe;
+};
+
 struct sx150x_chip {
 	struct gpio_chip                 gpio_chip;
 	struct i2c_client               *client;
@@ -354,6 +407,32 @@ static void sx150x_gpio_set(struct gpio_chip *gc, unsigned offset, int val)
 	mutex_unlock(&chip->lock);
 }
 
+static int sx150x_gpio_set_single_ended(struct gpio_chip *gc,
+					unsigned offset,
+                                        enum single_ended_mode mode)
+{
+	struct sx150x_chip *chip = gpiochip_get_data(gc);
+
+	/* On the SX160X 789 we can set open drain */
+	if (chip->dev_cfg->model != SX150X_789)
+		return -ENOTSUPP;
+
+	if (mode == LINE_MODE_PUSH_PULL)
+		return sx150x_write_cfg(chip,
+					offset,
+					1,
+					chip->dev_cfg->pri.x789.reg_drain,
+					0);
+
+	if (mode == LINE_MODE_OPEN_DRAIN)
+		return sx150x_write_cfg(chip,
+					offset,
+					1,
+					chip->dev_cfg->pri.x789.reg_drain,
+					1);
+	return -ENOTSUPP;
+}
+
 static int sx150x_gpio_direction_input(struct gpio_chip *gc, unsigned offset)
 {
 	struct sx150x_chip *chip = gpiochip_get_data(gc);
@@ -508,6 +587,7 @@ static void sx150x_init_chip(struct sx150x_chip *chip,
 	chip->gpio_chip.direction_output = sx150x_gpio_direction_output;
 	chip->gpio_chip.get              = sx150x_gpio_get;
 	chip->gpio_chip.set              = sx150x_gpio_set;
+	chip->gpio_chip.set_single_ended = sx150x_gpio_set_single_ended;
 	chip->gpio_chip.base             = pdata->gpio_base;
 	chip->gpio_chip.can_sleep        = true;
 	chip->gpio_chip.ngpio            = chip->dev_cfg->ngpios;
@@ -597,12 +677,6 @@ static int sx150x_init_hw(struct sx150x_chip *chip,
 
 	if (chip->dev_cfg->model == SX150X_789) {
 		err = sx150x_init_io(chip,
-				chip->dev_cfg->pri.x789.reg_drain,
-				pdata->io_open_drain_ena);
-		if (err < 0)
-			return err;
-
-		err = sx150x_init_io(chip,
 				chip->dev_cfg->pri.x789.reg_polarity,
 				pdata->io_polarity);
 		if (err < 0)
@@ -718,13 +792,3 @@ static int __init sx150x_init(void)
 	return i2c_add_driver(&sx150x_driver);
 }
 subsys_initcall(sx150x_init);
-
-static void __exit sx150x_exit(void)
-{
-	return i2c_del_driver(&sx150x_driver);
-}
-module_exit(sx150x_exit);
-
-MODULE_AUTHOR("Gregory Bean <gbean@codeaurora.org>");
-MODULE_DESCRIPTION("Driver for Semtech SX150X I2C GPIO Expanders");
-MODULE_LICENSE("GPL v2");
diff --git a/drivers/gpio/gpio-tc3589x.c b/drivers/gpio/gpio-tc3589x.c
index 4f566e6b8..2e35ed3ab 100644
--- a/drivers/gpio/gpio-tc3589x.c
+++ b/drivers/gpio/gpio-tc3589x.c
@@ -6,14 +6,14 @@
  * Author: Rabin Vincent <rabin.vincent@stericsson.com> for ST-Ericsson
  */
 
-#include <linux/module.h>
 #include <linux/init.h>
 #include <linux/platform_device.h>
 #include <linux/slab.h>
-#include <linux/gpio.h>
+#include <linux/gpio/driver.h>
 #include <linux/of.h>
 #include <linux/interrupt.h>
 #include <linux/mfd/tc3589x.h>
+#include <linux/bitops.h>
 
 /*
  * These registers are modified under the irq bus lock and cached to avoid
@@ -39,7 +39,7 @@ static int tc3589x_gpio_get(struct gpio_chip *chip, unsigned offset)
 	struct tc3589x_gpio *tc3589x_gpio = gpiochip_get_data(chip);
 	struct tc3589x *tc3589x = tc3589x_gpio->tc3589x;
 	u8 reg = TC3589x_GPIODATA0 + (offset / 8) * 2;
-	u8 mask = 1 << (offset % 8);
+	u8 mask = BIT(offset % 8);
 	int ret;
 
 	ret = tc3589x_reg_read(tc3589x, reg);
@@ -55,7 +55,7 @@ static void tc3589x_gpio_set(struct gpio_chip *chip, unsigned offset, int val)
 	struct tc3589x *tc3589x = tc3589x_gpio->tc3589x;
 	u8 reg = TC3589x_GPIODATA0 + (offset / 8) * 2;
 	unsigned pos = offset % 8;
-	u8 data[] = {!!val << pos, 1 << pos};
+	u8 data[] = {val ? BIT(pos) : 0, BIT(pos)};
 
 	tc3589x_block_write(tc3589x, reg, ARRAY_SIZE(data), data);
 }
@@ -70,7 +70,7 @@ static int tc3589x_gpio_direction_output(struct gpio_chip *chip,
 
 	tc3589x_gpio_set(chip, offset, val);
 
-	return tc3589x_set_bits(tc3589x, reg, 1 << pos, 1 << pos);
+	return tc3589x_set_bits(tc3589x, reg, BIT(pos), BIT(pos));
 }
 
 static int tc3589x_gpio_direction_input(struct gpio_chip *chip,
@@ -81,7 +81,47 @@ static int tc3589x_gpio_direction_input(struct gpio_chip *chip,
 	u8 reg = TC3589x_GPIODIR0 + offset / 8;
 	unsigned pos = offset % 8;
 
-	return tc3589x_set_bits(tc3589x, reg, 1 << pos, 0);
+	return tc3589x_set_bits(tc3589x, reg, BIT(pos), 0);
+}
+
+static int tc3589x_gpio_single_ended(struct gpio_chip *chip,
+				     unsigned offset,
+				     enum single_ended_mode mode)
+{
+	struct tc3589x_gpio *tc3589x_gpio = gpiochip_get_data(chip);
+	struct tc3589x *tc3589x = tc3589x_gpio->tc3589x;
+	/*
+	 * These registers are alterated at each second address
+	 * ODM bit 0 = drive to GND or Hi-Z (open drain)
+	 * ODM bit 1 = drive to VDD or Hi-Z (open source)
+	 */
+	u8 odmreg = TC3589x_GPIOODM0 + (offset / 8) * 2;
+	u8 odereg = TC3589x_GPIOODE0 + (offset / 8) * 2;
+	unsigned pos = offset % 8;
+	int ret;
+
+	switch(mode) {
+	case LINE_MODE_OPEN_DRAIN:
+		/* Set open drain mode */
+		ret = tc3589x_set_bits(tc3589x, odmreg, BIT(pos), 0);
+		if (ret)
+			return ret;
+		/* Enable open drain/source mode */
+		return tc3589x_set_bits(tc3589x, odereg, BIT(pos), BIT(pos));
+	case LINE_MODE_OPEN_SOURCE:
+		/* Set open source mode */
+		ret = tc3589x_set_bits(tc3589x, odmreg, BIT(pos), BIT(pos));
+		if (ret)
+			return ret;
+		/* Enable open drain/source mode */
+		return tc3589x_set_bits(tc3589x, odereg, BIT(pos), BIT(pos));
+	case LINE_MODE_PUSH_PULL:
+		/* Disable open drain/source mode */
+		return tc3589x_set_bits(tc3589x, odereg, BIT(pos), 0);
+	default:
+		break;
+	}
+	return -ENOTSUPP;
 }
 
 static struct gpio_chip template_chip = {
@@ -91,6 +131,7 @@ static struct gpio_chip template_chip = {
 	.get			= tc3589x_gpio_get,
 	.direction_output	= tc3589x_gpio_direction_output,
 	.set			= tc3589x_gpio_set,
+	.set_single_ended	= tc3589x_gpio_single_ended,
 	.can_sleep		= true,
 };
 
@@ -100,7 +141,7 @@ static int tc3589x_gpio_irq_set_type(struct irq_data *d, unsigned int type)
 	struct tc3589x_gpio *tc3589x_gpio = gpiochip_get_data(gc);
 	int offset = d->hwirq;
 	int regoffset = offset / 8;
-	int mask = 1 << (offset % 8);
+	int mask = BIT(offset % 8);
 
 	if (type == IRQ_TYPE_EDGE_BOTH) {
 		tc3589x_gpio->regs[REG_IBE][regoffset] |= mask;
@@ -165,7 +206,7 @@ static void tc3589x_gpio_irq_mask(struct irq_data *d)
 	struct tc3589x_gpio *tc3589x_gpio = gpiochip_get_data(gc);
 	int offset = d->hwirq;
 	int regoffset = offset / 8;
-	int mask = 1 << (offset % 8);
+	int mask = BIT(offset % 8);
 
 	tc3589x_gpio->regs[REG_IE][regoffset] &= ~mask;
 }
@@ -176,7 +217,7 @@ static void tc3589x_gpio_irq_unmask(struct irq_data *d)
 	struct tc3589x_gpio *tc3589x_gpio = gpiochip_get_data(gc);
 	int offset = d->hwirq;
 	int regoffset = offset / 8;
-	int mask = 1 << (offset % 8);
+	int mask = BIT(offset % 8);
 
 	tc3589x_gpio->regs[REG_IE][regoffset] |= mask;
 }
@@ -311,13 +352,3 @@ static int __init tc3589x_gpio_init(void)
 	return platform_driver_register(&tc3589x_gpio_driver);
 }
 subsys_initcall(tc3589x_gpio_init);
-
-static void __exit tc3589x_gpio_exit(void)
-{
-	platform_driver_unregister(&tc3589x_gpio_driver);
-}
-module_exit(tc3589x_gpio_exit);
-
-MODULE_LICENSE("GPL v2");
-MODULE_DESCRIPTION("TC3589x GPIO driver");
-MODULE_AUTHOR("Hanumath Prasad, Rabin Vincent");
diff --git a/drivers/gpio/gpio-tegra.c b/drivers/gpio/gpio-tegra.c
index 790bb111b..661b0e34e 100644
--- a/drivers/gpio/gpio-tegra.c
+++ b/drivers/gpio/gpio-tegra.c
@@ -35,24 +35,27 @@
 #define GPIO_PORT(x)		(((x) >> 3) & 0x3)
 #define GPIO_BIT(x)		((x) & 0x7)
 
-#define GPIO_REG(x)		(GPIO_BANK(x) * tegra_gpio_bank_stride + \
+#define GPIO_REG(tgi, x)	(GPIO_BANK(x) * tgi->soc->bank_stride + \
 					GPIO_PORT(x) * 4)
 
-#define GPIO_CNF(x)		(GPIO_REG(x) + 0x00)
-#define GPIO_OE(x)		(GPIO_REG(x) + 0x10)
-#define GPIO_OUT(x)		(GPIO_REG(x) + 0X20)
-#define GPIO_IN(x)		(GPIO_REG(x) + 0x30)
-#define GPIO_INT_STA(x)		(GPIO_REG(x) + 0x40)
-#define GPIO_INT_ENB(x)		(GPIO_REG(x) + 0x50)
-#define GPIO_INT_LVL(x)		(GPIO_REG(x) + 0x60)
-#define GPIO_INT_CLR(x)		(GPIO_REG(x) + 0x70)
-
-#define GPIO_MSK_CNF(x)		(GPIO_REG(x) + tegra_gpio_upper_offset + 0x00)
-#define GPIO_MSK_OE(x)		(GPIO_REG(x) + tegra_gpio_upper_offset + 0x10)
-#define GPIO_MSK_OUT(x)		(GPIO_REG(x) + tegra_gpio_upper_offset + 0X20)
-#define GPIO_MSK_INT_STA(x)	(GPIO_REG(x) + tegra_gpio_upper_offset + 0x40)
-#define GPIO_MSK_INT_ENB(x)	(GPIO_REG(x) + tegra_gpio_upper_offset + 0x50)
-#define GPIO_MSK_INT_LVL(x)	(GPIO_REG(x) + tegra_gpio_upper_offset + 0x60)
+#define GPIO_CNF(t, x)		(GPIO_REG(t, x) + 0x00)
+#define GPIO_OE(t, x)		(GPIO_REG(t, x) + 0x10)
+#define GPIO_OUT(t, x)		(GPIO_REG(t, x) + 0X20)
+#define GPIO_IN(t, x)		(GPIO_REG(t, x) + 0x30)
+#define GPIO_INT_STA(t, x)	(GPIO_REG(t, x) + 0x40)
+#define GPIO_INT_ENB(t, x)	(GPIO_REG(t, x) + 0x50)
+#define GPIO_INT_LVL(t, x)	(GPIO_REG(t, x) + 0x60)
+#define GPIO_INT_CLR(t, x)	(GPIO_REG(t, x) + 0x70)
+#define GPIO_DBC_CNT(t, x)	(GPIO_REG(t, x) + 0xF0)
+
+
+#define GPIO_MSK_CNF(t, x)	(GPIO_REG(t, x) + t->soc->upper_offset + 0x00)
+#define GPIO_MSK_OE(t, x)	(GPIO_REG(t, x) + t->soc->upper_offset + 0x10)
+#define GPIO_MSK_OUT(t, x)	(GPIO_REG(t, x) + t->soc->upper_offset + 0X20)
+#define GPIO_MSK_DBC_EN(t, x)	(GPIO_REG(t, x) + t->soc->upper_offset + 0x30)
+#define GPIO_MSK_INT_STA(t, x)	(GPIO_REG(t, x) + t->soc->upper_offset + 0x40)
+#define GPIO_MSK_INT_ENB(t, x)	(GPIO_REG(t, x) + t->soc->upper_offset + 0x50)
+#define GPIO_MSK_INT_LVL(t, x)	(GPIO_REG(t, x) + t->soc->upper_offset + 0x60)
 
 #define GPIO_INT_LVL_MASK		0x010101
 #define GPIO_INT_LVL_EDGE_RISING	0x000101
@@ -61,10 +64,13 @@
 #define GPIO_INT_LVL_LEVEL_HIGH		0x000001
 #define GPIO_INT_LVL_LEVEL_LOW		0x000000
 
+struct tegra_gpio_info;
+
 struct tegra_gpio_bank {
 	int bank;
 	int irq;
 	spinlock_t lvl_lock[4];
+	spinlock_t dbc_lock[4];	/* Lock for updating debounce count register */
 #ifdef CONFIG_PM_SLEEP
 	u32 cnf[4];
 	u32 out[4];
@@ -72,25 +78,38 @@ struct tegra_gpio_bank {
 	u32 int_enb[4];
 	u32 int_lvl[4];
 	u32 wake_enb[4];
+	u32 dbc_enb[4];
 #endif
+	u32 dbc_cnt[4];
+	struct tegra_gpio_info *tgi;
+};
+
+struct tegra_gpio_soc_config {
+	bool debounce_supported;
+	u32 bank_stride;
+	u32 upper_offset;
 };
 
-static struct device *dev;
-static struct irq_domain *irq_domain;
-static void __iomem *regs;
-static u32 tegra_gpio_bank_count;
-static u32 tegra_gpio_bank_stride;
-static u32 tegra_gpio_upper_offset;
-static struct tegra_gpio_bank *tegra_gpio_banks;
+struct tegra_gpio_info {
+	struct device				*dev;
+	void __iomem				*regs;
+	struct irq_domain			*irq_domain;
+	struct tegra_gpio_bank			*bank_info;
+	const struct tegra_gpio_soc_config	*soc;
+	struct gpio_chip			gc;
+	struct irq_chip				ic;
+	u32					bank_count;
+};
 
-static inline void tegra_gpio_writel(u32 val, u32 reg)
+static inline void tegra_gpio_writel(struct tegra_gpio_info *tgi,
+				     u32 val, u32 reg)
 {
-	__raw_writel(val, regs + reg);
+	__raw_writel(val, tgi->regs + reg);
 }
 
-static inline u32 tegra_gpio_readl(u32 reg)
+static inline u32 tegra_gpio_readl(struct tegra_gpio_info *tgi, u32 reg)
 {
-	return __raw_readl(regs + reg);
+	return __raw_readl(tgi->regs + reg);
 }
 
 static int tegra_gpio_compose(int bank, int port, int bit)
@@ -98,24 +117,25 @@ static int tegra_gpio_compose(int bank, int port, int bit)
 	return (bank << 5) | ((port & 0x3) << 3) | (bit & 0x7);
 }
 
-static void tegra_gpio_mask_write(u32 reg, int gpio, int value)
+static void tegra_gpio_mask_write(struct tegra_gpio_info *tgi, u32 reg,
+				  int gpio, int value)
 {
 	u32 val;
 
 	val = 0x100 << GPIO_BIT(gpio);
 	if (value)
 		val |= 1 << GPIO_BIT(gpio);
-	tegra_gpio_writel(val, reg);
+	tegra_gpio_writel(tgi, val, reg);
 }
 
-static void tegra_gpio_enable(int gpio)
+static void tegra_gpio_enable(struct tegra_gpio_info *tgi, int gpio)
 {
-	tegra_gpio_mask_write(GPIO_MSK_CNF(gpio), gpio, 1);
+	tegra_gpio_mask_write(tgi, GPIO_MSK_CNF(tgi, gpio), gpio, 1);
 }
 
-static void tegra_gpio_disable(int gpio)
+static void tegra_gpio_disable(struct tegra_gpio_info *tgi, int gpio)
 {
-	tegra_gpio_mask_write(GPIO_MSK_CNF(gpio), gpio, 0);
+	tegra_gpio_mask_write(tgi, GPIO_MSK_CNF(tgi, gpio), gpio, 0);
 }
 
 static int tegra_gpio_request(struct gpio_chip *chip, unsigned offset)
@@ -125,83 +145,138 @@ static int tegra_gpio_request(struct gpio_chip *chip, unsigned offset)
 
 static void tegra_gpio_free(struct gpio_chip *chip, unsigned offset)
 {
+	struct tegra_gpio_info *tgi = gpiochip_get_data(chip);
+
 	pinctrl_free_gpio(offset);
-	tegra_gpio_disable(offset);
+	tegra_gpio_disable(tgi, offset);
 }
 
 static void tegra_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
 {
-	tegra_gpio_mask_write(GPIO_MSK_OUT(offset), offset, value);
+	struct tegra_gpio_info *tgi = gpiochip_get_data(chip);
+
+	tegra_gpio_mask_write(tgi, GPIO_MSK_OUT(tgi, offset), offset, value);
 }
 
 static int tegra_gpio_get(struct gpio_chip *chip, unsigned offset)
 {
+	struct tegra_gpio_info *tgi = gpiochip_get_data(chip);
+	int bval = BIT(GPIO_BIT(offset));
+
 	/* If gpio is in output mode then read from the out value */
-	if ((tegra_gpio_readl(GPIO_OE(offset)) >> GPIO_BIT(offset)) & 1)
-		return (tegra_gpio_readl(GPIO_OUT(offset)) >>
-				GPIO_BIT(offset)) & 0x1;
+	if (tegra_gpio_readl(tgi, GPIO_OE(tgi, offset)) & bval)
+		return !!(tegra_gpio_readl(tgi, GPIO_OUT(tgi, offset)) & bval);
 
-	return (tegra_gpio_readl(GPIO_IN(offset)) >> GPIO_BIT(offset)) & 0x1;
+	return !!(tegra_gpio_readl(tgi, GPIO_IN(tgi, offset)) & bval);
 }
 
 static int tegra_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
 {
-	tegra_gpio_mask_write(GPIO_MSK_OE(offset), offset, 0);
-	tegra_gpio_enable(offset);
+	struct tegra_gpio_info *tgi = gpiochip_get_data(chip);
+
+	tegra_gpio_mask_write(tgi, GPIO_MSK_OE(tgi, offset), offset, 0);
+	tegra_gpio_enable(tgi, offset);
 	return 0;
 }
 
 static int tegra_gpio_direction_output(struct gpio_chip *chip, unsigned offset,
 					int value)
 {
+	struct tegra_gpio_info *tgi = gpiochip_get_data(chip);
+
 	tegra_gpio_set(chip, offset, value);
-	tegra_gpio_mask_write(GPIO_MSK_OE(offset), offset, 1);
-	tegra_gpio_enable(offset);
+	tegra_gpio_mask_write(tgi, GPIO_MSK_OE(tgi, offset), offset, 1);
+	tegra_gpio_enable(tgi, offset);
 	return 0;
 }
 
-static int tegra_gpio_to_irq(struct gpio_chip *chip, unsigned offset)
+static int tegra_gpio_get_direction(struct gpio_chip *chip, unsigned offset)
 {
-	return irq_find_mapping(irq_domain, offset);
+	struct tegra_gpio_info *tgi = gpiochip_get_data(chip);
+	u32 pin_mask = BIT(GPIO_BIT(offset));
+	u32 cnf, oe;
+
+	cnf = tegra_gpio_readl(tgi, GPIO_CNF(tgi, offset));
+	if (!(cnf & pin_mask))
+		return -EINVAL;
+
+	oe = tegra_gpio_readl(tgi, GPIO_OE(tgi, offset));
+
+	return (oe & pin_mask) ? GPIOF_DIR_OUT : GPIOF_DIR_IN;
 }
 
-static struct gpio_chip tegra_gpio_chip = {
-	.label			= "tegra-gpio",
-	.request		= tegra_gpio_request,
-	.free			= tegra_gpio_free,
-	.direction_input	= tegra_gpio_direction_input,
-	.get			= tegra_gpio_get,
-	.direction_output	= tegra_gpio_direction_output,
-	.set			= tegra_gpio_set,
-	.to_irq			= tegra_gpio_to_irq,
-	.base			= 0,
-};
+static int tegra_gpio_set_debounce(struct gpio_chip *chip, unsigned int offset,
+				   unsigned int debounce)
+{
+	struct tegra_gpio_info *tgi = gpiochip_get_data(chip);
+	struct tegra_gpio_bank *bank = &tgi->bank_info[GPIO_BANK(offset)];
+	unsigned int debounce_ms = DIV_ROUND_UP(debounce, 1000);
+	unsigned long flags;
+	int port;
+
+	if (!debounce_ms) {
+		tegra_gpio_mask_write(tgi, GPIO_MSK_DBC_EN(tgi, offset),
+				      offset, 0);
+		return 0;
+	}
+
+	debounce_ms = min(debounce_ms, 255U);
+	port = GPIO_PORT(offset);
+
+	/* There is only one debounce count register per port and hence
+	 * set the maximum of current and requested debounce time.
+	 */
+	spin_lock_irqsave(&bank->dbc_lock[port], flags);
+	if (bank->dbc_cnt[port] < debounce_ms) {
+		tegra_gpio_writel(tgi, debounce_ms, GPIO_DBC_CNT(tgi, offset));
+		bank->dbc_cnt[port] = debounce_ms;
+	}
+	spin_unlock_irqrestore(&bank->dbc_lock[port], flags);
+
+	tegra_gpio_mask_write(tgi, GPIO_MSK_DBC_EN(tgi, offset), offset, 1);
+
+	return 0;
+}
+
+static int tegra_gpio_to_irq(struct gpio_chip *chip, unsigned offset)
+{
+	struct tegra_gpio_info *tgi = gpiochip_get_data(chip);
+
+	return irq_find_mapping(tgi->irq_domain, offset);
+}
 
 static void tegra_gpio_irq_ack(struct irq_data *d)
 {
+	struct tegra_gpio_bank *bank = irq_data_get_irq_chip_data(d);
+	struct tegra_gpio_info *tgi = bank->tgi;
 	int gpio = d->hwirq;
 
-	tegra_gpio_writel(1 << GPIO_BIT(gpio), GPIO_INT_CLR(gpio));
+	tegra_gpio_writel(tgi, 1 << GPIO_BIT(gpio), GPIO_INT_CLR(tgi, gpio));
 }
 
 static void tegra_gpio_irq_mask(struct irq_data *d)
 {
+	struct tegra_gpio_bank *bank = irq_data_get_irq_chip_data(d);
+	struct tegra_gpio_info *tgi = bank->tgi;
 	int gpio = d->hwirq;
 
-	tegra_gpio_mask_write(GPIO_MSK_INT_ENB(gpio), gpio, 0);
+	tegra_gpio_mask_write(tgi, GPIO_MSK_INT_ENB(tgi, gpio), gpio, 0);
 }
 
 static void tegra_gpio_irq_unmask(struct irq_data *d)
 {
+	struct tegra_gpio_bank *bank = irq_data_get_irq_chip_data(d);
+	struct tegra_gpio_info *tgi = bank->tgi;
 	int gpio = d->hwirq;
 
-	tegra_gpio_mask_write(GPIO_MSK_INT_ENB(gpio), gpio, 1);
+	tegra_gpio_mask_write(tgi, GPIO_MSK_INT_ENB(tgi, gpio), gpio, 1);
 }
 
 static int tegra_gpio_irq_set_type(struct irq_data *d, unsigned int type)
 {
 	int gpio = d->hwirq;
 	struct tegra_gpio_bank *bank = irq_data_get_irq_chip_data(d);
+	struct tegra_gpio_info *tgi = bank->tgi;
 	int port = GPIO_PORT(gpio);
 	int lvl_type;
 	int val;
@@ -233,23 +308,24 @@ static int tegra_gpio_irq_set_type(struct irq_data *d, unsigned int type)
 		return -EINVAL;
 	}
 
-	ret = gpiochip_lock_as_irq(&tegra_gpio_chip, gpio);
+	ret = gpiochip_lock_as_irq(&tgi->gc, gpio);
 	if (ret) {
-		dev_err(dev, "unable to lock Tegra GPIO %d as IRQ\n", gpio);
+		dev_err(tgi->dev,
+			"unable to lock Tegra GPIO %d as IRQ\n", gpio);
 		return ret;
 	}
 
 	spin_lock_irqsave(&bank->lvl_lock[port], flags);
 
-	val = tegra_gpio_readl(GPIO_INT_LVL(gpio));
+	val = tegra_gpio_readl(tgi, GPIO_INT_LVL(tgi, gpio));
 	val &= ~(GPIO_INT_LVL_MASK << GPIO_BIT(gpio));
 	val |= lvl_type << GPIO_BIT(gpio);
-	tegra_gpio_writel(val, GPIO_INT_LVL(gpio));
+	tegra_gpio_writel(tgi, val, GPIO_INT_LVL(tgi, gpio));
 
 	spin_unlock_irqrestore(&bank->lvl_lock[port], flags);
 
-	tegra_gpio_mask_write(GPIO_MSK_OE(gpio), gpio, 0);
-	tegra_gpio_enable(gpio);
+	tegra_gpio_mask_write(tgi, GPIO_MSK_OE(tgi, gpio), gpio, 0);
+	tegra_gpio_enable(tgi, gpio);
 
 	if (type & (IRQ_TYPE_LEVEL_LOW | IRQ_TYPE_LEVEL_HIGH))
 		irq_set_handler_locked(d, handle_level_irq);
@@ -261,9 +337,11 @@ static int tegra_gpio_irq_set_type(struct irq_data *d, unsigned int type)
 
 static void tegra_gpio_irq_shutdown(struct irq_data *d)
 {
+	struct tegra_gpio_bank *bank = irq_data_get_irq_chip_data(d);
+	struct tegra_gpio_info *tgi = bank->tgi;
 	int gpio = d->hwirq;
 
-	gpiochip_unlock_as_irq(&tegra_gpio_chip, gpio);
+	gpiochip_unlock_as_irq(&tgi->gc, gpio);
 }
 
 static void tegra_gpio_irq_handler(struct irq_desc *desc)
@@ -271,19 +349,24 @@ static void tegra_gpio_irq_handler(struct irq_desc *desc)
 	int port;
 	int pin;
 	int unmasked = 0;
+	int gpio;
+	u32 lvl;
+	unsigned long sta;
 	struct irq_chip *chip = irq_desc_get_chip(desc);
 	struct tegra_gpio_bank *bank = irq_desc_get_handler_data(desc);
+	struct tegra_gpio_info *tgi = bank->tgi;
 
 	chained_irq_enter(chip, desc);
 
 	for (port = 0; port < 4; port++) {
-		int gpio = tegra_gpio_compose(bank->bank, port, 0);
-		unsigned long sta = tegra_gpio_readl(GPIO_INT_STA(gpio)) &
-			tegra_gpio_readl(GPIO_INT_ENB(gpio));
-		u32 lvl = tegra_gpio_readl(GPIO_INT_LVL(gpio));
+		gpio = tegra_gpio_compose(bank->bank, port, 0);
+		sta = tegra_gpio_readl(tgi, GPIO_INT_STA(tgi, gpio)) &
+			tegra_gpio_readl(tgi, GPIO_INT_ENB(tgi, gpio));
+		lvl = tegra_gpio_readl(tgi, GPIO_INT_LVL(tgi, gpio));
 
 		for_each_set_bit(pin, &sta, 8) {
-			tegra_gpio_writel(1 << pin, GPIO_INT_CLR(gpio));
+			tegra_gpio_writel(tgi, 1 << pin,
+					  GPIO_INT_CLR(tgi, gpio));
 
 			/* if gpio is edge triggered, clear condition
 			 * before executing the handler so that we don't
@@ -306,22 +389,37 @@ static void tegra_gpio_irq_handler(struct irq_desc *desc)
 #ifdef CONFIG_PM_SLEEP
 static int tegra_gpio_resume(struct device *dev)
 {
+	struct platform_device *pdev = to_platform_device(dev);
+	struct tegra_gpio_info *tgi = platform_get_drvdata(pdev);
 	unsigned long flags;
 	int b;
 	int p;
 
 	local_irq_save(flags);
 
-	for (b = 0; b < tegra_gpio_bank_count; b++) {
-		struct tegra_gpio_bank *bank = &tegra_gpio_banks[b];
+	for (b = 0; b < tgi->bank_count; b++) {
+		struct tegra_gpio_bank *bank = &tgi->bank_info[b];
 
 		for (p = 0; p < ARRAY_SIZE(bank->oe); p++) {
 			unsigned int gpio = (b<<5) | (p<<3);
-			tegra_gpio_writel(bank->cnf[p], GPIO_CNF(gpio));
-			tegra_gpio_writel(bank->out[p], GPIO_OUT(gpio));
-			tegra_gpio_writel(bank->oe[p], GPIO_OE(gpio));
-			tegra_gpio_writel(bank->int_lvl[p], GPIO_INT_LVL(gpio));
-			tegra_gpio_writel(bank->int_enb[p], GPIO_INT_ENB(gpio));
+			tegra_gpio_writel(tgi, bank->cnf[p],
+					  GPIO_CNF(tgi, gpio));
+
+			if (tgi->soc->debounce_supported) {
+				tegra_gpio_writel(tgi, bank->dbc_cnt[p],
+						  GPIO_DBC_CNT(tgi, gpio));
+				tegra_gpio_writel(tgi, bank->dbc_enb[p],
+						  GPIO_MSK_DBC_EN(tgi, gpio));
+			}
+
+			tegra_gpio_writel(tgi, bank->out[p],
+					  GPIO_OUT(tgi, gpio));
+			tegra_gpio_writel(tgi, bank->oe[p],
+					  GPIO_OE(tgi, gpio));
+			tegra_gpio_writel(tgi, bank->int_lvl[p],
+					  GPIO_INT_LVL(tgi, gpio));
+			tegra_gpio_writel(tgi, bank->int_enb[p],
+					  GPIO_INT_ENB(tgi, gpio));
 		}
 	}
 
@@ -331,25 +429,39 @@ static int tegra_gpio_resume(struct device *dev)
 
 static int tegra_gpio_suspend(struct device *dev)
 {
+	struct platform_device *pdev = to_platform_device(dev);
+	struct tegra_gpio_info *tgi = platform_get_drvdata(pdev);
 	unsigned long flags;
 	int b;
 	int p;
 
 	local_irq_save(flags);
-	for (b = 0; b < tegra_gpio_bank_count; b++) {
-		struct tegra_gpio_bank *bank = &tegra_gpio_banks[b];
+	for (b = 0; b < tgi->bank_count; b++) {
+		struct tegra_gpio_bank *bank = &tgi->bank_info[b];
 
 		for (p = 0; p < ARRAY_SIZE(bank->oe); p++) {
 			unsigned int gpio = (b<<5) | (p<<3);
-			bank->cnf[p] = tegra_gpio_readl(GPIO_CNF(gpio));
-			bank->out[p] = tegra_gpio_readl(GPIO_OUT(gpio));
-			bank->oe[p] = tegra_gpio_readl(GPIO_OE(gpio));
-			bank->int_enb[p] = tegra_gpio_readl(GPIO_INT_ENB(gpio));
-			bank->int_lvl[p] = tegra_gpio_readl(GPIO_INT_LVL(gpio));
+			bank->cnf[p] = tegra_gpio_readl(tgi,
+							GPIO_CNF(tgi, gpio));
+			bank->out[p] = tegra_gpio_readl(tgi,
+							GPIO_OUT(tgi, gpio));
+			bank->oe[p] = tegra_gpio_readl(tgi,
+						       GPIO_OE(tgi, gpio));
+			if (tgi->soc->debounce_supported) {
+				bank->dbc_enb[p] = tegra_gpio_readl(tgi,
+						GPIO_MSK_DBC_EN(tgi, gpio));
+				bank->dbc_enb[p] = (bank->dbc_enb[p] << 8) |
+							bank->dbc_enb[p];
+			}
+
+			bank->int_enb[p] = tegra_gpio_readl(tgi,
+						GPIO_INT_ENB(tgi, gpio));
+			bank->int_lvl[p] = tegra_gpio_readl(tgi,
+						GPIO_INT_LVL(tgi, gpio));
 
 			/* Enable gpio irq for wake up source */
-			tegra_gpio_writel(bank->wake_enb[p],
-					  GPIO_INT_ENB(gpio));
+			tegra_gpio_writel(tgi, bank->wake_enb[p],
+					  GPIO_INT_ENB(tgi, gpio));
 		}
 	}
 	local_irq_restore(flags);
@@ -382,22 +494,23 @@ static int tegra_gpio_irq_set_wake(struct irq_data *d, unsigned int enable)
 
 static int dbg_gpio_show(struct seq_file *s, void *unused)
 {
+	struct tegra_gpio_info *tgi = s->private;
 	int i;
 	int j;
 
-	for (i = 0; i < tegra_gpio_bank_count; i++) {
+	for (i = 0; i < tgi->bank_count; i++) {
 		for (j = 0; j < 4; j++) {
 			int gpio = tegra_gpio_compose(i, j, 0);
 			seq_printf(s,
 				"%d:%d %02x %02x %02x %02x %02x %02x %06x\n",
 				i, j,
-				tegra_gpio_readl(GPIO_CNF(gpio)),
-				tegra_gpio_readl(GPIO_OE(gpio)),
-				tegra_gpio_readl(GPIO_OUT(gpio)),
-				tegra_gpio_readl(GPIO_IN(gpio)),
-				tegra_gpio_readl(GPIO_INT_STA(gpio)),
-				tegra_gpio_readl(GPIO_INT_ENB(gpio)),
-				tegra_gpio_readl(GPIO_INT_LVL(gpio)));
+				tegra_gpio_readl(tgi, GPIO_CNF(tgi, gpio)),
+				tegra_gpio_readl(tgi, GPIO_OE(tgi, gpio)),
+				tegra_gpio_readl(tgi, GPIO_OUT(tgi, gpio)),
+				tegra_gpio_readl(tgi, GPIO_IN(tgi, gpio)),
+				tegra_gpio_readl(tgi, GPIO_INT_STA(tgi, gpio)),
+				tegra_gpio_readl(tgi, GPIO_INT_ENB(tgi, gpio)),
+				tegra_gpio_readl(tgi, GPIO_INT_LVL(tgi, gpio)));
 		}
 	}
 	return 0;
@@ -405,7 +518,7 @@ static int dbg_gpio_show(struct seq_file *s, void *unused)
 
 static int dbg_gpio_open(struct inode *inode, struct file *file)
 {
-	return single_open(file, dbg_gpio_show, &inode->i_private);
+	return single_open(file, dbg_gpio_show, inode->i_private);
 }
 
 static const struct file_operations debug_fops = {
@@ -415,66 +528,34 @@ static const struct file_operations debug_fops = {
 	.release	= single_release,
 };
 
-static void tegra_gpio_debuginit(void)
+static void tegra_gpio_debuginit(struct tegra_gpio_info *tgi)
 {
 	(void) debugfs_create_file("tegra_gpio", S_IRUGO,
-					NULL, NULL, &debug_fops);
+					NULL, tgi, &debug_fops);
 }
 
 #else
 
-static inline void tegra_gpio_debuginit(void)
+static inline void tegra_gpio_debuginit(struct tegra_gpio_info *tgi)
 {
 }
 
 #endif
 
-static struct irq_chip tegra_gpio_irq_chip = {
-	.name		= "GPIO",
-	.irq_ack	= tegra_gpio_irq_ack,
-	.irq_mask	= tegra_gpio_irq_mask,
-	.irq_unmask	= tegra_gpio_irq_unmask,
-	.irq_set_type	= tegra_gpio_irq_set_type,
-	.irq_shutdown	= tegra_gpio_irq_shutdown,
-#ifdef CONFIG_PM_SLEEP
-	.irq_set_wake	= tegra_gpio_irq_set_wake,
-#endif
-};
-
 static const struct dev_pm_ops tegra_gpio_pm_ops = {
 	SET_SYSTEM_SLEEP_PM_OPS(tegra_gpio_suspend, tegra_gpio_resume)
 };
 
-struct tegra_gpio_soc_config {
-	u32 bank_stride;
-	u32 upper_offset;
-};
-
-static struct tegra_gpio_soc_config tegra20_gpio_config = {
-	.bank_stride = 0x80,
-	.upper_offset = 0x800,
-};
-
-static struct tegra_gpio_soc_config tegra30_gpio_config = {
-	.bank_stride = 0x100,
-	.upper_offset = 0x80,
-};
-
-static const struct of_device_id tegra_gpio_of_match[] = {
-	{ .compatible = "nvidia,tegra30-gpio", .data = &tegra30_gpio_config },
-	{ .compatible = "nvidia,tegra20-gpio", .data = &tegra20_gpio_config },
-	{ },
-};
-
-/* This lock class tells lockdep that GPIO irqs are in a different
- * category than their parents, so it won't report false recursion.
+/*
+ * This lock class tells lockdep that GPIO irqs are in a different category
+ * than their parents, so it won't report false recursion.
  */
 static struct lock_class_key gpio_lock_class;
 
 static int tegra_gpio_probe(struct platform_device *pdev)
 {
-	const struct of_device_id *match;
-	struct tegra_gpio_soc_config *config;
+	const struct tegra_gpio_soc_config *config;
+	struct tegra_gpio_info *tgi;
 	struct resource *res;
 	struct tegra_gpio_bank *bank;
 	int ret;
@@ -482,102 +563,153 @@ static int tegra_gpio_probe(struct platform_device *pdev)
 	int i;
 	int j;
 
-	dev = &pdev->dev;
-
-	match = of_match_device(tegra_gpio_of_match, &pdev->dev);
-	if (!match) {
+	config = of_device_get_match_data(&pdev->dev);
+	if (!config) {
 		dev_err(&pdev->dev, "Error: No device match found\n");
 		return -ENODEV;
 	}
-	config = (struct tegra_gpio_soc_config *)match->data;
 
-	tegra_gpio_bank_stride = config->bank_stride;
-	tegra_gpio_upper_offset = config->upper_offset;
+	tgi = devm_kzalloc(&pdev->dev, sizeof(*tgi), GFP_KERNEL);
+	if (!tgi)
+		return -ENODEV;
+
+	tgi->soc = config;
+	tgi->dev = &pdev->dev;
 
 	for (;;) {
-		res = platform_get_resource(pdev, IORESOURCE_IRQ, tegra_gpio_bank_count);
+		res = platform_get_resource(pdev, IORESOURCE_IRQ,
+					    tgi->bank_count);
 		if (!res)
 			break;
-		tegra_gpio_bank_count++;
+		tgi->bank_count++;
 	}
-	if (!tegra_gpio_bank_count) {
+	if (!tgi->bank_count) {
 		dev_err(&pdev->dev, "Missing IRQ resource\n");
 		return -ENODEV;
 	}
 
-	tegra_gpio_chip.ngpio = tegra_gpio_bank_count * 32;
+	tgi->gc.label			= "tegra-gpio";
+	tgi->gc.request			= tegra_gpio_request;
+	tgi->gc.free			= tegra_gpio_free;
+	tgi->gc.direction_input		= tegra_gpio_direction_input;
+	tgi->gc.get			= tegra_gpio_get;
+	tgi->gc.direction_output	= tegra_gpio_direction_output;
+	tgi->gc.set			= tegra_gpio_set;
+	tgi->gc.get_direction		= tegra_gpio_get_direction;
+	tgi->gc.to_irq			= tegra_gpio_to_irq;
+	tgi->gc.base			= 0;
+	tgi->gc.ngpio			= tgi->bank_count * 32;
+	tgi->gc.parent			= &pdev->dev;
+	tgi->gc.of_node			= pdev->dev.of_node;
+
+	tgi->ic.name			= "GPIO";
+	tgi->ic.irq_ack			= tegra_gpio_irq_ack;
+	tgi->ic.irq_mask		= tegra_gpio_irq_mask;
+	tgi->ic.irq_unmask		= tegra_gpio_irq_unmask;
+	tgi->ic.irq_set_type		= tegra_gpio_irq_set_type;
+	tgi->ic.irq_shutdown		= tegra_gpio_irq_shutdown;
+#ifdef CONFIG_PM_SLEEP
+	tgi->ic.irq_set_wake		= tegra_gpio_irq_set_wake;
+#endif
+
+	platform_set_drvdata(pdev, tgi);
+
+	if (config->debounce_supported)
+		tgi->gc.set_debounce = tegra_gpio_set_debounce;
 
-	tegra_gpio_banks = devm_kzalloc(&pdev->dev,
-			tegra_gpio_bank_count * sizeof(*tegra_gpio_banks),
-			GFP_KERNEL);
-	if (!tegra_gpio_banks)
+	tgi->bank_info = devm_kzalloc(&pdev->dev, tgi->bank_count *
+				      sizeof(*tgi->bank_info), GFP_KERNEL);
+	if (!tgi->bank_info)
 		return -ENODEV;
 
-	irq_domain = irq_domain_add_linear(pdev->dev.of_node,
-					   tegra_gpio_chip.ngpio,
-					   &irq_domain_simple_ops, NULL);
-	if (!irq_domain)
+	tgi->irq_domain = irq_domain_add_linear(pdev->dev.of_node,
+						tgi->gc.ngpio,
+						&irq_domain_simple_ops, NULL);
+	if (!tgi->irq_domain)
 		return -ENODEV;
 
-	for (i = 0; i < tegra_gpio_bank_count; i++) {
+	for (i = 0; i < tgi->bank_count; i++) {
 		res = platform_get_resource(pdev, IORESOURCE_IRQ, i);
 		if (!res) {
 			dev_err(&pdev->dev, "Missing IRQ resource\n");
 			return -ENODEV;
 		}
 
-		bank = &tegra_gpio_banks[i];
+		bank = &tgi->bank_info[i];
 		bank->bank = i;
 		bank->irq = res->start;
+		bank->tgi = tgi;
 	}
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	regs = devm_ioremap_resource(&pdev->dev, res);
-	if (IS_ERR(regs))
-		return PTR_ERR(regs);
+	tgi->regs = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(tgi->regs))
+		return PTR_ERR(tgi->regs);
 
-	for (i = 0; i < tegra_gpio_bank_count; i++) {
+	for (i = 0; i < tgi->bank_count; i++) {
 		for (j = 0; j < 4; j++) {
 			int gpio = tegra_gpio_compose(i, j, 0);
-			tegra_gpio_writel(0x00, GPIO_INT_ENB(gpio));
+			tegra_gpio_writel(tgi, 0x00, GPIO_INT_ENB(tgi, gpio));
 		}
 	}
 
-	tegra_gpio_chip.of_node = pdev->dev.of_node;
-
-	ret = devm_gpiochip_add_data(&pdev->dev, &tegra_gpio_chip, NULL);
+	ret = devm_gpiochip_add_data(&pdev->dev, &tgi->gc, tgi);
 	if (ret < 0) {
-		irq_domain_remove(irq_domain);
+		irq_domain_remove(tgi->irq_domain);
 		return ret;
 	}
 
-	for (gpio = 0; gpio < tegra_gpio_chip.ngpio; gpio++) {
-		int irq = irq_create_mapping(irq_domain, gpio);
+	for (gpio = 0; gpio < tgi->gc.ngpio; gpio++) {
+		int irq = irq_create_mapping(tgi->irq_domain, gpio);
 		/* No validity check; all Tegra GPIOs are valid IRQs */
 
-		bank = &tegra_gpio_banks[GPIO_BANK(gpio)];
+		bank = &tgi->bank_info[GPIO_BANK(gpio)];
 
 		irq_set_lockdep_class(irq, &gpio_lock_class);
 		irq_set_chip_data(irq, bank);
-		irq_set_chip_and_handler(irq, &tegra_gpio_irq_chip,
-					 handle_simple_irq);
+		irq_set_chip_and_handler(irq, &tgi->ic, handle_simple_irq);
 	}
 
-	for (i = 0; i < tegra_gpio_bank_count; i++) {
-		bank = &tegra_gpio_banks[i];
+	for (i = 0; i < tgi->bank_count; i++) {
+		bank = &tgi->bank_info[i];
 
 		irq_set_chained_handler_and_data(bank->irq,
 						 tegra_gpio_irq_handler, bank);
 
-		for (j = 0; j < 4; j++)
+		for (j = 0; j < 4; j++) {
 			spin_lock_init(&bank->lvl_lock[j]);
+			spin_lock_init(&bank->dbc_lock[j]);
+		}
 	}
 
-	tegra_gpio_debuginit();
+	tegra_gpio_debuginit(tgi);
 
 	return 0;
 }
 
+static const struct tegra_gpio_soc_config tegra20_gpio_config = {
+	.bank_stride = 0x80,
+	.upper_offset = 0x800,
+};
+
+static const struct tegra_gpio_soc_config tegra30_gpio_config = {
+	.bank_stride = 0x100,
+	.upper_offset = 0x80,
+};
+
+static const struct tegra_gpio_soc_config tegra210_gpio_config = {
+	.debounce_supported = true,
+	.bank_stride = 0x100,
+	.upper_offset = 0x80,
+};
+
+static const struct of_device_id tegra_gpio_of_match[] = {
+	{ .compatible = "nvidia,tegra210-gpio", .data = &tegra210_gpio_config },
+	{ .compatible = "nvidia,tegra30-gpio", .data = &tegra30_gpio_config },
+	{ .compatible = "nvidia,tegra20-gpio", .data = &tegra20_gpio_config },
+	{ },
+};
+
 static struct platform_driver tegra_gpio_driver = {
 	.driver		= {
 		.name	= "tegra-gpio",
diff --git a/drivers/gpio/gpio-timberdale.c b/drivers/gpio/gpio-timberdale.c
index 85ed608c2..181f86ce0 100644
--- a/drivers/gpio/gpio-timberdale.c
+++ b/drivers/gpio/gpio-timberdale.c
@@ -1,5 +1,6 @@
 /*
  * Timberdale FPGA GPIO driver
+ * Author: Mocean Laboratories
  * Copyright (c) 2009 Intel Corporation
  *
  * This program is free software; you can redistribute it and/or modify
@@ -20,7 +21,7 @@
  * Timberdale FPGA GPIO
  */
 
-#include <linux/module.h>
+#include <linux/init.h>
 #include <linux/gpio.h>
 #include <linux/platform_device.h>
 #include <linux/irq.h>
@@ -290,40 +291,14 @@ static int timbgpio_probe(struct platform_device *pdev)
 	return 0;
 }
 
-static int timbgpio_remove(struct platform_device *pdev)
-{
-	struct timbgpio_platform_data *pdata = dev_get_platdata(&pdev->dev);
-	struct timbgpio *tgpio = platform_get_drvdata(pdev);
-	int irq = platform_get_irq(pdev, 0);
-
-	if (irq >= 0 && tgpio->irq_base > 0) {
-		int i;
-		for (i = 0; i < pdata->nr_pins; i++) {
-			irq_set_chip(tgpio->irq_base + i, NULL);
-			irq_set_chip_data(tgpio->irq_base + i, NULL);
-		}
-
-		irq_set_handler(irq, NULL);
-		irq_set_handler_data(irq, NULL);
-	}
-
-	return 0;
-}
-
 static struct platform_driver timbgpio_platform_driver = {
 	.driver = {
-		.name	= DRIVER_NAME,
+		.name			= DRIVER_NAME,
+		.suppress_bind_attrs	= true,
 	},
 	.probe		= timbgpio_probe,
-	.remove		= timbgpio_remove,
 };
 
 /*--------------------------------------------------------------------------*/
 
-module_platform_driver(timbgpio_platform_driver);
-
-MODULE_DESCRIPTION("Timberdale GPIO driver");
-MODULE_LICENSE("GPL v2");
-MODULE_AUTHOR("Mocean Laboratories");
-MODULE_ALIAS("platform:"DRIVER_NAME);
-
+builtin_platform_driver(timbgpio_platform_driver);
diff --git a/drivers/gpio/gpio-tpic2810.c b/drivers/gpio/gpio-tpic2810.c
index 9f020aa4b..cace79c1b 100644
--- a/drivers/gpio/gpio-tpic2810.c
+++ b/drivers/gpio/gpio-tpic2810.c
@@ -57,39 +57,34 @@ static int tpic2810_direction_output(struct gpio_chip *chip,
 	return 0;
 }
 
-static void tpic2810_set(struct gpio_chip *chip, unsigned offset, int value)
+static void tpic2810_set_mask_bits(struct gpio_chip *chip, u8 mask, u8 bits)
 {
 	struct tpic2810 *gpio = gpiochip_get_data(chip);
+	u8 buffer;
+	int err;
 
 	mutex_lock(&gpio->lock);
 
-	if (value)
-		gpio->buffer |= BIT(offset);
-	else
-		gpio->buffer &= ~BIT(offset);
+	buffer = gpio->buffer & ~mask;
+	buffer |= (mask & bits);
 
-	i2c_smbus_write_byte_data(gpio->client, TPIC2810_WS_COMMAND,
-				  gpio->buffer);
+	err = i2c_smbus_write_byte_data(gpio->client, TPIC2810_WS_COMMAND,
+					buffer);
+	if (!err)
+		gpio->buffer = buffer;
 
 	mutex_unlock(&gpio->lock);
 }
 
+static void tpic2810_set(struct gpio_chip *chip, unsigned offset, int value)
+{
+	tpic2810_set_mask_bits(chip, BIT(offset), value ? BIT(offset) : 0);
+}
+
 static void tpic2810_set_multiple(struct gpio_chip *chip, unsigned long *mask,
 				  unsigned long *bits)
 {
-	struct tpic2810 *gpio = gpiochip_get_data(chip);
-
-	mutex_lock(&gpio->lock);
-
-	/* clear bits under mask */
-	gpio->buffer &= ~(*mask);
-	/* set bits under mask */
-	gpio->buffer |= ((*mask) & (*bits));
-
-	i2c_smbus_write_byte_data(gpio->client, TPIC2810_WS_COMMAND,
-				  gpio->buffer);
-
-	mutex_unlock(&gpio->lock);
+	tpic2810_set_mask_bits(chip, *mask, *bits);
 }
 
 static struct gpio_chip template_chip = {
diff --git a/drivers/gpio/gpio-tps65218.c b/drivers/gpio/gpio-tps65218.c
index 313c0e484..0eaeac8de 100644
--- a/drivers/gpio/gpio-tps65218.c
+++ b/drivers/gpio/gpio-tps65218.c
@@ -101,16 +101,6 @@ static int tps65218_gpio_request(struct gpio_chip *gc, unsigned offset)
 
 		break;
 	case 1:
-		/* GP02 is push-pull by default, can be set as open drain. */
-		if (gpiochip_line_is_open_drain(gc, offset)) {
-			ret = tps65218_clear_bits(tps65218,
-						  TPS65218_REG_CONFIG1,
-						  TPS65218_CONFIG1_GPO2_BUF,
-						  TPS65218_PROTECT_L1);
-			if (ret)
-				return ret;
-		}
-
 		/* Setup GPO2 */
 		ret = tps65218_clear_bits(tps65218, TPS65218_REG_CONFIG1,
 					  TPS65218_CONFIG1_IO1_SEL,
@@ -148,6 +138,40 @@ static int tps65218_gpio_request(struct gpio_chip *gc, unsigned offset)
 	return 0;
 }
 
+static int tps65218_gpio_set_single_ended(struct gpio_chip *gc,
+					  unsigned offset,
+					  enum single_ended_mode mode)
+{
+	struct tps65218_gpio *tps65218_gpio = gpiochip_get_data(gc);
+	struct tps65218 *tps65218 = tps65218_gpio->tps65218;
+
+	switch (offset) {
+	case 0:
+	case 2:
+		/* GPO1 is hardwired to be open drain */
+		if (mode == LINE_MODE_OPEN_DRAIN)
+			return 0;
+		return -ENOTSUPP;
+	case 1:
+		/* GPO2 is push-pull by default, can be set as open drain. */
+		if (mode == LINE_MODE_OPEN_DRAIN)
+			return tps65218_clear_bits(tps65218,
+						   TPS65218_REG_CONFIG1,
+						   TPS65218_CONFIG1_GPO2_BUF,
+						   TPS65218_PROTECT_L1);
+		if (mode == LINE_MODE_PUSH_PULL)
+			return tps65218_set_bits(tps65218,
+						 TPS65218_REG_CONFIG1,
+						 TPS65218_CONFIG1_GPO2_BUF,
+						 TPS65218_CONFIG1_GPO2_BUF,
+						 TPS65218_PROTECT_L1);
+		return -ENOTSUPP;
+	default:
+		break;
+	}
+	return -ENOTSUPP;
+}
+
 static struct gpio_chip template_chip = {
 	.label			= "gpio-tps65218",
 	.owner			= THIS_MODULE,
@@ -156,6 +180,7 @@ static struct gpio_chip template_chip = {
 	.direction_input	= tps65218_gpio_input,
 	.get			= tps65218_gpio_get,
 	.set			= tps65218_gpio_set,
+	.set_single_ended	= tps65218_gpio_set_single_ended,
 	.can_sleep		= true,
 	.ngpio			= 3,
 	.base			= -1,
diff --git a/drivers/gpio/gpio-tps6586x.c b/drivers/gpio/gpio-tps6586x.c
index c88bdc8ee..6b15e68a3 100644
--- a/drivers/gpio/gpio-tps6586x.c
+++ b/drivers/gpio/gpio-tps6586x.c
@@ -24,7 +24,7 @@
 #include <linux/errno.h>
 #include <linux/gpio.h>
 #include <linux/kernel.h>
-#include <linux/module.h>
+#include <linux/init.h>
 #include <linux/mfd/tps6586x.h>
 #include <linux/of_device.h>
 #include <linux/platform_device.h>
@@ -140,14 +140,3 @@ static int __init tps6586x_gpio_init(void)
 	return platform_driver_register(&tps6586x_gpio_driver);
 }
 subsys_initcall(tps6586x_gpio_init);
-
-static void __exit tps6586x_gpio_exit(void)
-{
-	platform_driver_unregister(&tps6586x_gpio_driver);
-}
-module_exit(tps6586x_gpio_exit);
-
-MODULE_ALIAS("platform:tps6586x-gpio");
-MODULE_DESCRIPTION("GPIO interface for TPS6586X PMIC");
-MODULE_AUTHOR("Laxman Dewangan <ldewangan@nvidia.com>");
-MODULE_LICENSE("GPL");
diff --git a/drivers/gpio/gpio-tps65910.c b/drivers/gpio/gpio-tps65910.c
index cdbd7c740..0ae6a5a54 100644
--- a/drivers/gpio/gpio-tps65910.c
+++ b/drivers/gpio/gpio-tps65910.c
@@ -4,7 +4,7 @@
  * Copyright 2010 Texas Instruments Inc.
  *
  * Author: Graeme Gregory <gg@slimlogic.co.uk>
- * Author: Jorge Eduardo Candelaria jedu@slimlogic.co.uk>
+ * Author: Jorge Eduardo Candelaria <jedu@slimlogic.co.uk>
  *
  *  This program is free software; you can redistribute it and/or modify it
  *  under  the terms of the GNU General  Public License as published by the
@@ -14,7 +14,7 @@
  */
 
 #include <linux/kernel.h>
-#include <linux/module.h>
+#include <linux/init.h>
 #include <linux/errno.h>
 #include <linux/gpio.h>
 #include <linux/i2c.h>
@@ -193,15 +193,3 @@ static int __init tps65910_gpio_init(void)
 	return platform_driver_register(&tps65910_gpio_driver);
 }
 subsys_initcall(tps65910_gpio_init);
-
-static void __exit tps65910_gpio_exit(void)
-{
-	platform_driver_unregister(&tps65910_gpio_driver);
-}
-module_exit(tps65910_gpio_exit);
-
-MODULE_AUTHOR("Graeme Gregory <gg@slimlogic.co.uk>");
-MODULE_AUTHOR("Jorge Eduardo Candelaria jedu@slimlogic.co.uk>");
-MODULE_DESCRIPTION("GPIO interface for TPS65910/TPS6511 PMICs");
-MODULE_LICENSE("GPL v2");
-MODULE_ALIAS("platform:tps65910-gpio");
diff --git a/drivers/gpio/gpio-vx855.c b/drivers/gpio/gpio-vx855.c
index 8cdb9f7ec..4e4501211 100644
--- a/drivers/gpio/gpio-vx855.c
+++ b/drivers/gpio/gpio-vx855.c
@@ -186,6 +186,28 @@ static int vx855gpio_direction_output(struct gpio_chip *gpio,
 	return 0;
 }
 
+static int vx855gpio_set_single_ended(struct gpio_chip *gpio,
+				      unsigned int nr,
+				      enum single_ended_mode mode)
+{
+	/* The GPI cannot be single-ended */
+	if (nr < NR_VX855_GPI)
+		return -EINVAL;
+
+	/* The GPO's are push-pull */
+	if (nr < NR_VX855_GPInO) {
+		if (mode != LINE_MODE_PUSH_PULL)
+			return -ENOTSUPP;
+		return 0;
+	}
+
+	/* The GPIO's are open drain */
+	if (mode != LINE_MODE_OPEN_DRAIN)
+		return -ENOTSUPP;
+
+	return 0;
+}
+
 static const char *vx855gpio_names[NR_VX855_GP] = {
 	"VX855_GPI0", "VX855_GPI1", "VX855_GPI2", "VX855_GPI3", "VX855_GPI4",
 	"VX855_GPI5", "VX855_GPI6", "VX855_GPI7", "VX855_GPI8", "VX855_GPI9",
@@ -209,6 +231,7 @@ static void vx855gpio_gpio_setup(struct vx855_gpio *vg)
 	c->direction_output = vx855gpio_direction_output;
 	c->get = vx855gpio_get;
 	c->set = vx855gpio_set;
+	c->set_single_ended = vx855gpio_set_single_ended;
 	c->dbg_show = NULL;
 	c->base = 0;
 	c->ngpio = NR_VX855_GP;
diff --git a/drivers/gpio/gpio-wm831x.c b/drivers/gpio/gpio-wm831x.c
index 18cb0f534..41ec78340 100644
--- a/drivers/gpio/gpio-wm831x.c
+++ b/drivers/gpio/gpio-wm831x.c
@@ -132,6 +132,28 @@ static int wm831x_gpio_set_debounce(struct gpio_chip *chip, unsigned offset,
 	return wm831x_set_bits(wm831x, reg, WM831X_GPN_FN_MASK, fn);
 }
 
+static int wm831x_set_single_ended(struct gpio_chip *chip,
+				   unsigned int offset,
+				   enum single_ended_mode mode)
+{
+	struct wm831x_gpio *wm831x_gpio = gpiochip_get_data(chip);
+	struct wm831x *wm831x = wm831x_gpio->wm831x;
+	int reg = WM831X_GPIO1_CONTROL + offset;
+
+	switch (mode) {
+	case LINE_MODE_OPEN_DRAIN:
+		return wm831x_set_bits(wm831x, reg,
+				       WM831X_GPN_OD_MASK, WM831X_GPN_OD);
+	case LINE_MODE_PUSH_PULL:
+		return wm831x_set_bits(wm831x, reg,
+				       WM831X_GPN_OD_MASK, 0);
+	default:
+		break;
+	}
+
+	return -ENOTSUPP;
+}
+
 #ifdef CONFIG_DEBUG_FS
 static void wm831x_gpio_dbg_show(struct seq_file *s, struct gpio_chip *chip)
 {
@@ -216,7 +238,7 @@ static void wm831x_gpio_dbg_show(struct seq_file *s, struct gpio_chip *chip)
 			   pull,
 			   powerdomain,
 			   reg & WM831X_GPN_POL ? "" : " inverted",
-			   reg & WM831X_GPN_OD ? "open-drain" : "CMOS",
+			   reg & WM831X_GPN_OD ? "open-drain" : "push-pull",
 			   tristated ? " tristated" : "",
 			   reg);
 	}
@@ -234,6 +256,7 @@ static struct gpio_chip template_chip = {
 	.set			= wm831x_gpio_set,
 	.to_irq			= wm831x_gpio_to_irq,
 	.set_debounce		= wm831x_gpio_set_debounce,
+	.set_single_ended	= wm831x_set_single_ended,
 	.dbg_show		= wm831x_gpio_dbg_show,
 	.can_sleep		= true,
 };
diff --git a/drivers/gpio/gpio-wm8994.c b/drivers/gpio/gpio-wm8994.c
index b089df99a..744af388c 100644
--- a/drivers/gpio/gpio-wm8994.c
+++ b/drivers/gpio/gpio-wm8994.c
@@ -103,6 +103,28 @@ static void wm8994_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
 	wm8994_set_bits(wm8994, WM8994_GPIO_1 + offset, WM8994_GPN_LVL, value);
 }
 
+static int wm8994_gpio_set_single_ended(struct gpio_chip *chip,
+					unsigned int offset,
+					enum single_ended_mode mode)
+{
+	struct wm8994_gpio *wm8994_gpio = gpiochip_get_data(chip);
+	struct wm8994 *wm8994 = wm8994_gpio->wm8994;
+
+	switch (mode) {
+	case LINE_MODE_OPEN_DRAIN:
+		return wm8994_set_bits(wm8994, WM8994_GPIO_1 + offset,
+				       WM8994_GPN_OP_CFG_MASK,
+				       WM8994_GPN_OP_CFG);
+	case LINE_MODE_PUSH_PULL:
+		return wm8994_set_bits(wm8994, WM8994_GPIO_1 + offset,
+				       WM8994_GPN_OP_CFG_MASK, 0);
+	default:
+		break;
+	}
+
+	return -ENOTSUPP;
+}
+
 static int wm8994_gpio_to_irq(struct gpio_chip *chip, unsigned offset)
 {
 	struct wm8994_gpio *wm8994_gpio = gpiochip_get_data(chip);
@@ -217,7 +239,7 @@ static void wm8994_gpio_dbg_show(struct seq_file *s, struct gpio_chip *chip)
 		if (reg & WM8994_GPN_OP_CFG)
 			seq_printf(s, "open drain ");
 		else
-			seq_printf(s, "CMOS ");
+			seq_printf(s, "push-pull ");
 
 		seq_printf(s, "%s (%x)\n",
 			   wm8994_gpio_fn(reg & WM8994_GPN_FN_MASK), reg);
@@ -235,6 +257,7 @@ static struct gpio_chip template_chip = {
 	.get			= wm8994_gpio_get,
 	.direction_output	= wm8994_gpio_direction_out,
 	.set			= wm8994_gpio_set,
+	.set_single_ended	= wm8994_gpio_set_single_ended,
 	.to_irq			= wm8994_gpio_to_irq,
 	.dbg_show		= wm8994_gpio_dbg_show,
 	.can_sleep		= true,
diff --git a/drivers/gpio/gpio-ws16c48.c b/drivers/gpio/gpio-ws16c48.c
index 51f41e8fd..eaa71d440 100644
--- a/drivers/gpio/gpio-ws16c48.c
+++ b/drivers/gpio/gpio-ws16c48.c
@@ -19,18 +19,23 @@
 #include <linux/ioport.h>
 #include <linux/interrupt.h>
 #include <linux/irqdesc.h>
+#include <linux/isa.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/moduleparam.h>
-#include <linux/platform_device.h>
 #include <linux/spinlock.h>
 
-static unsigned ws16c48_base;
-module_param(ws16c48_base, uint, 0);
-MODULE_PARM_DESC(ws16c48_base, "WinSystems WS16C48 base address");
-static unsigned ws16c48_irq;
-module_param(ws16c48_irq, uint, 0);
-MODULE_PARM_DESC(ws16c48_irq, "WinSystems WS16C48 interrupt line number");
+#define WS16C48_EXTENT 16
+#define MAX_NUM_WS16C48 max_num_isa_dev(WS16C48_EXTENT)
+
+static unsigned int base[MAX_NUM_WS16C48];
+static unsigned int num_ws16c48;
+module_param_array(base, uint, &num_ws16c48, 0);
+MODULE_PARM_DESC(base, "WinSystems WS16C48 base addresses");
+
+static unsigned int irq[MAX_NUM_WS16C48];
+module_param_array(irq, uint, NULL, 0);
+MODULE_PARM_DESC(irq, "WinSystems WS16C48 interrupt line numbers");
 
 /**
  * struct ws16c48_gpio - GPIO device private data structure
@@ -298,23 +303,19 @@ static irqreturn_t ws16c48_irq_handler(int irq, void *dev_id)
 	return IRQ_HANDLED;
 }
 
-static int __init ws16c48_probe(struct platform_device *pdev)
+static int ws16c48_probe(struct device *dev, unsigned int id)
 {
-	struct device *dev = &pdev->dev;
 	struct ws16c48_gpio *ws16c48gpio;
-	const unsigned base = ws16c48_base;
-	const unsigned extent = 16;
 	const char *const name = dev_name(dev);
 	int err;
-	const unsigned irq = ws16c48_irq;
 
 	ws16c48gpio = devm_kzalloc(dev, sizeof(*ws16c48gpio), GFP_KERNEL);
 	if (!ws16c48gpio)
 		return -ENOMEM;
 
-	if (!devm_request_region(dev, base, extent, name)) {
+	if (!devm_request_region(dev, base[id], WS16C48_EXTENT, name)) {
 		dev_err(dev, "Unable to lock port addresses (0x%X-0x%X)\n",
-			base, base + extent);
+			base[id], base[id] + WS16C48_EXTENT);
 		return -EBUSY;
 	}
 
@@ -328,8 +329,8 @@ static int __init ws16c48_probe(struct platform_device *pdev)
 	ws16c48gpio->chip.direction_output = ws16c48_gpio_direction_output;
 	ws16c48gpio->chip.get = ws16c48_gpio_get;
 	ws16c48gpio->chip.set = ws16c48_gpio_set;
-	ws16c48gpio->base = base;
-	ws16c48gpio->irq = irq;
+	ws16c48gpio->base = base[id];
+	ws16c48gpio->irq = irq[id];
 
 	spin_lock_init(&ws16c48gpio->lock);
 
@@ -342,11 +343,11 @@ static int __init ws16c48_probe(struct platform_device *pdev)
 	}
 
 	/* Disable IRQ by default */
-	outb(0x80, base + 7);
-	outb(0, base + 8);
-	outb(0, base + 9);
-	outb(0, base + 10);
-	outb(0xC0, base + 7);
+	outb(0x80, base[id] + 7);
+	outb(0, base[id] + 8);
+	outb(0, base[id] + 9);
+	outb(0, base[id] + 10);
+	outb(0xC0, base[id] + 7);
 
 	err = gpiochip_irqchip_add(&ws16c48gpio->chip, &ws16c48_irqchip, 0,
 		handle_edge_irq, IRQ_TYPE_NONE);
@@ -355,7 +356,7 @@ static int __init ws16c48_probe(struct platform_device *pdev)
 		goto err_gpiochip_remove;
 	}
 
-	err = request_irq(irq, ws16c48_irq_handler, IRQF_SHARED, name,
+	err = request_irq(irq[id], ws16c48_irq_handler, IRQF_SHARED, name,
 		ws16c48gpio);
 	if (err) {
 		dev_err(dev, "IRQ handler registering failed (%d)\n", err);
@@ -369,9 +370,9 @@ err_gpiochip_remove:
 	return err;
 }
 
-static int ws16c48_remove(struct platform_device *pdev)
+static int ws16c48_remove(struct device *dev, unsigned int id)
 {
-	struct ws16c48_gpio *const ws16c48gpio = platform_get_drvdata(pdev);
+	struct ws16c48_gpio *const ws16c48gpio = dev_get_drvdata(dev);
 
 	free_irq(ws16c48gpio->irq, ws16c48gpio);
 	gpiochip_remove(&ws16c48gpio->chip);
@@ -379,48 +380,15 @@ static int ws16c48_remove(struct platform_device *pdev)
 	return 0;
 }
 
-static struct platform_device *ws16c48_device;
-
-static struct platform_driver ws16c48_driver = {
+static struct isa_driver ws16c48_driver = {
+	.probe = ws16c48_probe,
 	.driver = {
 		.name = "ws16c48"
 	},
 	.remove = ws16c48_remove
 };
 
-static void __exit ws16c48_exit(void)
-{
-	platform_device_unregister(ws16c48_device);
-	platform_driver_unregister(&ws16c48_driver);
-}
-
-static int __init ws16c48_init(void)
-{
-	int err;
-
-	ws16c48_device = platform_device_alloc(ws16c48_driver.driver.name, -1);
-	if (!ws16c48_device)
-		return -ENOMEM;
-
-	err = platform_device_add(ws16c48_device);
-	if (err)
-		goto err_platform_device;
-
-	err = platform_driver_probe(&ws16c48_driver, ws16c48_probe);
-	if (err)
-		goto err_platform_driver;
-
-	return 0;
-
-err_platform_driver:
-	platform_device_del(ws16c48_device);
-err_platform_device:
-	platform_device_put(ws16c48_device);
-	return err;
-}
-
-module_init(ws16c48_init);
-module_exit(ws16c48_exit);
+module_isa_driver(ws16c48_driver, num_ws16c48);
 
 MODULE_AUTHOR("William Breathitt Gray <vilhelm.gray@gmail.com>");
 MODULE_DESCRIPTION("WinSystems WS16C48 GPIO driver");
diff --git a/drivers/gpio/gpio-xgene-sb.c b/drivers/gpio/gpio-xgene-sb.c
index 31cbcb84c..033258634 100644
--- a/drivers/gpio/gpio-xgene-sb.c
+++ b/drivers/gpio/gpio-xgene-sb.c
@@ -216,23 +216,10 @@ static int xgene_gpio_sb_domain_alloc(struct irq_domain *domain,
 			&parent_fwspec);
 }
 
-static void xgene_gpio_sb_domain_free(struct irq_domain *domain,
-		unsigned int virq,
-		unsigned int nr_irqs)
-{
-	struct irq_data *d;
-	unsigned int i;
-
-	for (i = 0; i < nr_irqs; i++) {
-		d = irq_domain_get_irq_data(domain, virq + i);
-		irq_domain_reset_irq_data(d);
-	}
-}
-
 static const struct irq_domain_ops xgene_gpio_sb_domain_ops = {
 	.translate      = xgene_gpio_sb_domain_translate,
 	.alloc          = xgene_gpio_sb_domain_alloc,
-	.free           = xgene_gpio_sb_domain_free,
+	.free           = irq_domain_free_irqs_common,
 	.activate	= xgene_gpio_sb_domain_activate,
 	.deactivate	= xgene_gpio_sb_domain_deactivate,
 };
diff --git a/drivers/gpio/gpio-xgene.c b/drivers/gpio/gpio-xgene.c
index 0dc916191..40a8881c2 100644
--- a/drivers/gpio/gpio-xgene.c
+++ b/drivers/gpio/gpio-xgene.c
@@ -17,7 +17,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#include <linux/module.h>
+#include <linux/acpi.h>
 #include <linux/kernel.h>
 #include <linux/init.h>
 #include <linux/io.h>
@@ -85,6 +85,17 @@ static void xgene_gpio_set(struct gpio_chip *gc, unsigned int offset, int val)
 	spin_unlock_irqrestore(&chip->lock, flags);
 }
 
+static int xgene_gpio_get_direction(struct gpio_chip *gc, unsigned int offset)
+{
+	struct xgene_gpio *chip = gpiochip_get_data(gc);
+	unsigned long bank_offset, bit_offset;
+
+	bank_offset = GPIO_SET_DR_OFFSET + GPIO_BANK_OFFSET(offset);
+	bit_offset = GPIO_BIT_OFFSET(offset);
+
+	return !!(ioread32(chip->base + bank_offset) & BIT(bit_offset));
+}
+
 static int xgene_gpio_dir_in(struct gpio_chip *gc, unsigned int offset)
 {
 	struct xgene_gpio *chip = gpiochip_get_data(gc);
@@ -189,6 +200,7 @@ static int xgene_gpio_probe(struct platform_device *pdev)
 
 	spin_lock_init(&gpio->lock);
 	gpio->chip.parent = &pdev->dev;
+	gpio->chip.get_direction = xgene_gpio_get_direction;
 	gpio->chip.direction_input = xgene_gpio_dir_in;
 	gpio->chip.direction_output = xgene_gpio_dir_out;
 	gpio->chip.get = xgene_gpio_get;
@@ -216,19 +228,21 @@ static const struct of_device_id xgene_gpio_of_match[] = {
 	{ .compatible = "apm,xgene-gpio", },
 	{},
 };
-MODULE_DEVICE_TABLE(of, xgene_gpio_of_match);
+
+#ifdef CONFIG_ACPI
+static const struct acpi_device_id xgene_gpio_acpi_match[] = {
+	{ "APMC0D14", 0 },
+	{ },
+};
+#endif
 
 static struct platform_driver xgene_gpio_driver = {
 	.driver = {
 		.name = "xgene-gpio",
 		.of_match_table = xgene_gpio_of_match,
+		.acpi_match_table = ACPI_PTR(xgene_gpio_acpi_match),
 		.pm     = XGENE_GPIO_PM_OPS,
 	},
 	.probe = xgene_gpio_probe,
 };
-
-module_platform_driver(xgene_gpio_driver);
-
-MODULE_AUTHOR("Feng Kan <fkan@apm.com>");
-MODULE_DESCRIPTION("APM X-Gene GPIO driver");
-MODULE_LICENSE("GPL");
+builtin_platform_driver(xgene_gpio_driver);
diff --git a/drivers/gpio/gpio-xlp.c b/drivers/gpio/gpio-xlp.c
index aa5813d2d..1a33a19d9 100644
--- a/drivers/gpio/gpio-xlp.c
+++ b/drivers/gpio/gpio-xlp.c
@@ -85,7 +85,8 @@ enum {
 	XLP_GPIO_VARIANT_XLP316,
 	XLP_GPIO_VARIANT_XLP208,
 	XLP_GPIO_VARIANT_XLP980,
-	XLP_GPIO_VARIANT_XLP532
+	XLP_GPIO_VARIANT_XLP532,
+	GPIO_VARIANT_VULCAN
 };
 
 struct xlp_gpio_priv {
@@ -285,6 +286,10 @@ static const struct of_device_id xlp_gpio_of_ids[] = {
 		.compatible = "netlogic,xlp532-gpio",
 		.data	    = (void *)XLP_GPIO_VARIANT_XLP532,
 	},
+	{
+		.compatible = "brcm,vulcan-gpio",
+		.data	    = (void *)GPIO_VARIANT_VULCAN,
+	},
 	{ /* sentinel */ },
 };
 MODULE_DEVICE_TABLE(of, xlp_gpio_of_ids);
@@ -347,6 +352,7 @@ static int xlp_gpio_probe(struct platform_device *pdev)
 		break;
 	case XLP_GPIO_VARIANT_XLP980:
 	case XLP_GPIO_VARIANT_XLP532:
+	case GPIO_VARIANT_VULCAN:
 		priv->gpio_out_en = gpio_base + GPIO_9XX_OUTPUT_EN;
 		priv->gpio_paddrv = gpio_base + GPIO_9XX_PADDRV;
 		priv->gpio_intr_stat = gpio_base + GPIO_9XX_INT_STAT;
@@ -354,7 +360,12 @@ static int xlp_gpio_probe(struct platform_device *pdev)
 		priv->gpio_intr_pol = gpio_base + GPIO_9XX_INT_POL;
 		priv->gpio_intr_en = gpio_base + GPIO_9XX_INT_EN00;
 
-		ngpio = (soc_type == XLP_GPIO_VARIANT_XLP980) ? 66 : 67;
+		if (soc_type == XLP_GPIO_VARIANT_XLP980)
+			ngpio = 66;
+		else if (soc_type == XLP_GPIO_VARIANT_XLP532)
+			ngpio = 67;
+		else
+			ngpio = 70;
 		break;
 	default:
 		dev_err(&pdev->dev, "Unknown Processor type!\n");
@@ -377,10 +388,14 @@ static int xlp_gpio_probe(struct platform_device *pdev)
 	gc->get = xlp_gpio_get;
 
 	spin_lock_init(&priv->lock);
-	irq_base = irq_alloc_descs(-1, XLP_GPIO_IRQ_BASE, gc->ngpio, 0);
+	/* XLP has fixed IRQ range for GPIO interrupts */
+	if (soc_type == GPIO_VARIANT_VULCAN)
+		irq_base = irq_alloc_descs(-1, 0, gc->ngpio, 0);
+	else
+		irq_base = irq_alloc_descs(-1, XLP_GPIO_IRQ_BASE, gc->ngpio, 0);
 	if (irq_base < 0) {
 		dev_err(&pdev->dev, "Failed to allocate IRQ numbers\n");
-		return -ENODEV;
+		return irq_base;
 	}
 
 	err = gpiochip_add_data(gc, priv);
diff --git a/drivers/gpio/gpio-zevio.c b/drivers/gpio/gpio-zevio.c
index cda6d922b..e23ef7b94 100644
--- a/drivers/gpio/gpio-zevio.c
+++ b/drivers/gpio/gpio-zevio.c
@@ -10,7 +10,7 @@
 
 #include <linux/spinlock.h>
 #include <linux/errno.h>
-#include <linux/module.h>
+#include <linux/init.h>
 #include <linux/bitops.h>
 #include <linux/io.h>
 #include <linux/of_device.h>
@@ -203,32 +203,17 @@ static int zevio_gpio_probe(struct platform_device *pdev)
 	return 0;
 }
 
-static int zevio_gpio_remove(struct platform_device *pdev)
-{
-	struct zevio_gpio *controller = platform_get_drvdata(pdev);
-
-	of_mm_gpiochip_remove(&controller->chip);
-
-	return 0;
-}
-
 static const struct of_device_id zevio_gpio_of_match[] = {
 	{ .compatible = "lsi,zevio-gpio", },
 	{ },
 };
 
-MODULE_DEVICE_TABLE(of, zevio_gpio_of_match);
-
 static struct platform_driver zevio_gpio_driver = {
 	.driver		= {
 		.name	= "gpio-zevio",
 		.of_match_table = zevio_gpio_of_match,
+		.suppress_bind_attrs = true,
 	},
 	.probe		= zevio_gpio_probe,
-	.remove		= zevio_gpio_remove,
 };
-module_platform_driver(zevio_gpio_driver);
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Fabian Vogt <fabian@ritter-vogt.de>");
-MODULE_DESCRIPTION("LSI ZEVIO SoC GPIO driver");
+builtin_platform_driver(zevio_gpio_driver);
diff --git a/drivers/gpio/gpio-zx.c b/drivers/gpio/gpio-zx.c
index 47c79fa65..93de8be0d 100644
--- a/drivers/gpio/gpio-zx.c
+++ b/drivers/gpio/gpio-zx.c
@@ -1,4 +1,8 @@
 /*
+ * ZTE ZX296702 GPIO driver
+ *
+ * Author: Jun Nie <jun.nie@linaro.org>
+ *
  * Copyright (C) 2015 Linaro Ltd.
  *
  * This program is free software; you can redistribute it and/or modify
@@ -10,7 +14,7 @@
 #include <linux/errno.h>
 #include <linux/gpio/driver.h>
 #include <linux/irqchip/chained_irq.h>
-#include <linux/module.h>
+#include <linux/init.h>
 #include <linux/of.h>
 #include <linux/pinctrl/consumer.h>
 #include <linux/platform_device.h>
@@ -282,7 +286,6 @@ static const struct of_device_id zx_gpio_match[] = {
 	},
 	{ },
 };
-MODULE_DEVICE_TABLE(of, zx_gpio_match);
 
 static struct platform_driver zx_gpio_driver = {
 	.probe		= zx_gpio_probe,
@@ -291,9 +294,4 @@ static struct platform_driver zx_gpio_driver = {
 		.of_match_table = of_match_ptr(zx_gpio_match),
 	},
 };
-
-module_platform_driver(zx_gpio_driver)
-
-MODULE_AUTHOR("Jun Nie <jun.nie@linaro.org>");
-MODULE_DESCRIPTION("ZTE ZX296702 GPIO driver");
-MODULE_LICENSE("GPL");
+builtin_platform_driver(zx_gpio_driver)
diff --git a/drivers/gpio/gpiolib-of.c b/drivers/gpio/gpiolib-of.c
index 42a4bb7cf..4aabddb38 100644
--- a/drivers/gpio/gpiolib-of.c
+++ b/drivers/gpio/gpiolib-of.c
@@ -16,6 +16,7 @@
 #include <linux/errno.h>
 #include <linux/module.h>
 #include <linux/io.h>
+#include <linux/io-mapping.h>
 #include <linux/gpio/consumer.h>
 #include <linux/of.h>
 #include <linux/of_address.h>
@@ -196,21 +197,68 @@ static struct gpio_desc *of_parse_own_gpio(struct device_node *np,
 }
 
 /**
+ * of_gpiochip_set_names() - set up the names of the lines
+ * @chip: GPIO chip whose lines should be named, if possible
+ */
+static void of_gpiochip_set_names(struct gpio_chip *gc)
+{
+	struct gpio_device *gdev = gc->gpiodev;
+	struct device_node *np = gc->of_node;
+	int i;
+	int nstrings;
+
+	nstrings = of_property_count_strings(np, "gpio-line-names");
+	if (nstrings <= 0)
+		/* Lines names not present */
+		return;
+
+	/* This is normally not what you want */
+	if (gdev->ngpio != nstrings)
+		dev_info(&gdev->dev, "gpio-line-names specifies %d line "
+			 "names but there are %d lines on the chip\n",
+			 nstrings, gdev->ngpio);
+
+	/*
+	 * Make sure to not index beyond the end of the number of descriptors
+	 * of the GPIO device.
+	 */
+	for (i = 0; i < gdev->ngpio; i++) {
+		const char *name;
+		int ret;
+
+		ret = of_property_read_string_index(np,
+						    "gpio-line-names",
+						    i,
+						    &name);
+		if (ret) {
+			if (ret != -ENODATA)
+                                dev_err(&gdev->dev,
+                                        "unable to name line %d: %d\n",
+                                        i, ret);
+			break;
+		}
+		gdev->descs[i].name = name;
+	}
+}
+
+/**
  * of_gpiochip_scan_gpios - Scan gpio-controller for gpio definitions
  * @chip:	gpio chip to act on
  *
  * This is only used by of_gpiochip_add to request/set GPIO initial
  * configuration.
+ * It retures error if it fails otherwise 0 on success.
  */
-static void of_gpiochip_scan_gpios(struct gpio_chip *chip)
+static int of_gpiochip_scan_gpios(struct gpio_chip *chip)
 {
 	struct gpio_desc *desc = NULL;
 	struct device_node *np;
 	const char *name;
 	enum gpio_lookup_flags lflags;
 	enum gpiod_flags dflags;
+	int ret;
 
-	for_each_child_of_node(chip->of_node, np) {
+	for_each_available_child_of_node(chip->of_node, np) {
 		if (!of_property_read_bool(np, "gpio-hog"))
 			continue;
 
@@ -218,9 +266,12 @@ static void of_gpiochip_scan_gpios(struct gpio_chip *chip)
 		if (IS_ERR(desc))
 			continue;
 
-		if (gpiod_hog(desc, name, lflags, dflags))
-			continue;
+		ret = gpiod_hog(desc, name, lflags, dflags);
+		if (ret < 0)
+			return ret;
 	}
+
+	return 0;
 }
 
 /**
@@ -440,11 +491,13 @@ int of_gpiochip_add(struct gpio_chip *chip)
 	if (status)
 		return status;
 
-	of_node_get(chip->of_node);
+	/* If the chip defines names itself, these take precedence */
+	if (!chip->names)
+		of_gpiochip_set_names(chip);
 
-	of_gpiochip_scan_gpios(chip);
+	of_node_get(chip->of_node);
 
-	return 0;
+	return of_gpiochip_scan_gpios(chip);
 }
 
 void of_gpiochip_remove(struct gpio_chip *chip)
diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index 996a73390..be74bd370 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -20,6 +20,7 @@
 #include <linux/cdev.h>
 #include <linux/fs.h>
 #include <linux/uaccess.h>
+#include <linux/compat.h>
 #include <uapi/linux/gpio.h>
 
 #include "gpiolib.h"
@@ -316,7 +317,7 @@ static long gpio_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
 {
 	struct gpio_device *gdev = filp->private_data;
 	struct gpio_chip *chip = gdev->chip;
-	int __user *ip = (int __user *)arg;
+	void __user *ip = (void __user *)arg;
 
 	/* We fail any subsequent ioctl():s when the chip is gone */
 	if (!chip)
@@ -388,6 +389,14 @@ static long gpio_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
 	return -EINVAL;
 }
 
+#ifdef CONFIG_COMPAT
+static long gpio_ioctl_compat(struct file *filp, unsigned int cmd,
+			      unsigned long arg)
+{
+	return gpio_ioctl(filp, cmd, (unsigned long)compat_ptr(arg));
+}
+#endif
+
 /**
  * gpio_chrdev_open() - open the chardev for ioctl operations
  * @inode: inode for this chardev
@@ -431,7 +440,9 @@ static const struct file_operations gpio_fileops = {
 	.owner = THIS_MODULE,
 	.llseek = noop_llseek,
 	.unlocked_ioctl = gpio_ioctl,
-	.compat_ioctl = gpio_ioctl,
+#ifdef CONFIG_COMPAT
+	.compat_ioctl = gpio_ioctl_compat,
+#endif
 };
 
 static void gpiodevice_release(struct device *dev)
@@ -616,21 +627,38 @@ int gpiochip_add_data(struct gpio_chip *chip, void *data)
 		goto err_free_label;
 	}
 
+	spin_unlock_irqrestore(&gpio_lock, flags);
+
 	for (i = 0; i < chip->ngpio; i++) {
 		struct gpio_desc *desc = &gdev->descs[i];
 
 		desc->gdev = gdev;
-
-		/* REVISIT: most hardware initializes GPIOs as inputs (often
-		 * with pullups enabled) so power usage is minimized. Linux
-		 * code should set the gpio direction first thing; but until
-		 * it does, and in case chip->get_direction is not set, we may
-		 * expose the wrong direction in sysfs.
+		/*
+		 * REVISIT: most hardware initializes GPIOs as inputs
+		 * (often with pullups enabled) so power usage is
+		 * minimized. Linux code should set the gpio direction
+		 * first thing; but until it does, and in case
+		 * chip->get_direction is not set, we may expose the
+		 * wrong direction in sysfs.
 		 */
-		desc->flags = !chip->direction_input ? (1 << FLAG_IS_OUT) : 0;
-	}
 
-	spin_unlock_irqrestore(&gpio_lock, flags);
+		if (chip->get_direction) {
+			/*
+			 * If we have .get_direction, set up the initial
+			 * direction flag from the hardware.
+			 */
+			int dir = chip->get_direction(chip, i);
+
+			if (!dir)
+				set_bit(FLAG_IS_OUT, &desc->flags);
+		} else if (!chip->direction_input) {
+			/*
+			 * If the chip lacks the .direction_input callback
+			 * we logically assume all lines are outputs.
+			 */
+			set_bit(FLAG_IS_OUT, &desc->flags);
+		}
+	}
 
 #ifdef CONFIG_PINCTRL
 	INIT_LIST_HEAD(&gdev->pin_ranges);
@@ -1552,8 +1580,8 @@ EXPORT_SYMBOL_GPL(gpiod_direction_input);
 
 static int _gpiod_direction_output_raw(struct gpio_desc *desc, int value)
 {
-	struct gpio_chip	*chip;
-	int			status = -EINVAL;
+	struct gpio_chip *gc = desc->gdev->chip;
+	int ret;
 
 	/* GPIOs used for IRQs shall not be set as output */
 	if (test_bit(FLAG_USED_AS_IRQ, &desc->flags)) {
@@ -1563,28 +1591,50 @@ static int _gpiod_direction_output_raw(struct gpio_desc *desc, int value)
 		return -EIO;
 	}
 
-	/* Open drain pin should not be driven to 1 */
-	if (value && test_bit(FLAG_OPEN_DRAIN,  &desc->flags))
-		return gpiod_direction_input(desc);
-
-	/* Open source pin should not be driven to 0 */
-	if (!value && test_bit(FLAG_OPEN_SOURCE,  &desc->flags))
-		return gpiod_direction_input(desc);
+	if (test_bit(FLAG_OPEN_DRAIN, &desc->flags)) {
+		/* First see if we can enable open drain in hardware */
+		if (gc->set_single_ended) {
+			ret = gc->set_single_ended(gc, gpio_chip_hwgpio(desc),
+						   LINE_MODE_OPEN_DRAIN);
+			if (!ret)
+				goto set_output_value;
+		}
+		/* Emulate open drain by not actively driving the line high */
+		if (value)
+			return gpiod_direction_input(desc);
+	}
+	else if (test_bit(FLAG_OPEN_SOURCE, &desc->flags)) {
+		if (gc->set_single_ended) {
+			ret = gc->set_single_ended(gc, gpio_chip_hwgpio(desc),
+						   LINE_MODE_OPEN_SOURCE);
+			if (!ret)
+				goto set_output_value;
+		}
+		/* Emulate open source by not actively driving the line low */
+		if (!value)
+			return gpiod_direction_input(desc);
+	} else {
+		/* Make sure to disable open drain/source hardware, if any */
+		if (gc->set_single_ended)
+			gc->set_single_ended(gc,
+					     gpio_chip_hwgpio(desc),
+					     LINE_MODE_PUSH_PULL);
+	}
 
-	chip = desc->gdev->chip;
-	if (!chip->set || !chip->direction_output) {
+set_output_value:
+	if (!gc->set || !gc->direction_output) {
 		gpiod_warn(desc,
 		       "%s: missing set() or direction_output() operations\n",
 		       __func__);
 		return -EIO;
 	}
 
-	status = chip->direction_output(chip, gpio_chip_hwgpio(desc), value);
-	if (status == 0)
+	ret = gc->direction_output(gc, gpio_chip_hwgpio(desc), value);
+	if (!ret)
 		set_bit(FLAG_IS_OUT, &desc->flags);
 	trace_gpio_value(desc_to_gpio(desc), 0, value);
-	trace_gpio_direction(desc_to_gpio(desc), 0, status);
-	return status;
+	trace_gpio_direction(desc_to_gpio(desc), 0, ret);
+	return ret;
 }
 
 /**
@@ -1846,10 +1896,10 @@ static void gpio_chip_set_multiple(struct gpio_chip *chip,
 	}
 }
 
-static void gpiod_set_array_value_priv(bool raw, bool can_sleep,
-				       unsigned int array_size,
-				       struct gpio_desc **desc_array,
-				       int *value_array)
+void gpiod_set_array_value_complex(bool raw, bool can_sleep,
+				   unsigned int array_size,
+				   struct gpio_desc **desc_array,
+				   int *value_array)
 {
 	int i = 0;
 
@@ -1955,8 +2005,8 @@ void gpiod_set_raw_array_value(unsigned int array_size,
 {
 	if (!desc_array)
 		return;
-	gpiod_set_array_value_priv(true, false, array_size, desc_array,
-				   value_array);
+	gpiod_set_array_value_complex(true, false, array_size, desc_array,
+				      value_array);
 }
 EXPORT_SYMBOL_GPL(gpiod_set_raw_array_value);
 
@@ -1977,8 +2027,8 @@ void gpiod_set_array_value(unsigned int array_size,
 {
 	if (!desc_array)
 		return;
-	gpiod_set_array_value_priv(false, false, array_size, desc_array,
-				   value_array);
+	gpiod_set_array_value_complex(false, false, array_size, desc_array,
+				      value_array);
 }
 EXPORT_SYMBOL_GPL(gpiod_set_array_value);
 
@@ -2003,8 +2053,8 @@ EXPORT_SYMBOL_GPL(gpiod_cansleep);
  */
 int gpiod_to_irq(const struct gpio_desc *desc)
 {
-	struct gpio_chip	*chip;
-	int			offset;
+	struct gpio_chip *chip;
+	int offset;
 
 	/*
 	 * Cannot VALIDATE_DESC() here as gpiod_to_irq() consumer semantics
@@ -2016,7 +2066,16 @@ int gpiod_to_irq(const struct gpio_desc *desc)
 
 	chip = desc->gdev->chip;
 	offset = gpio_chip_hwgpio(desc);
-	return chip->to_irq ? chip->to_irq(chip, offset) : -ENXIO;
+	if (chip->to_irq) {
+		int retirq = chip->to_irq(chip, offset);
+
+		/* Zero means NO_IRQ */
+		if (!retirq)
+			return -ENXIO;
+
+		return retirq;
+	}
+	return -ENXIO;
 }
 EXPORT_SYMBOL_GPL(gpiod_to_irq);
 
@@ -2030,17 +2089,30 @@ EXPORT_SYMBOL_GPL(gpiod_to_irq);
  */
 int gpiochip_lock_as_irq(struct gpio_chip *chip, unsigned int offset)
 {
-	if (offset >= chip->ngpio)
-		return -EINVAL;
+	struct gpio_desc *desc;
+
+	desc = gpiochip_get_desc(chip, offset);
+	if (IS_ERR(desc))
+		return PTR_ERR(desc);
+
+	/* Flush direction if something changed behind our back */
+	if (chip->get_direction) {
+		int dir = chip->get_direction(chip, offset);
 
-	if (test_bit(FLAG_IS_OUT, &chip->gpiodev->descs[offset].flags)) {
+		if (dir)
+			clear_bit(FLAG_IS_OUT, &desc->flags);
+		else
+			set_bit(FLAG_IS_OUT, &desc->flags);
+	}
+
+	if (test_bit(FLAG_IS_OUT, &desc->flags)) {
 		chip_err(chip,
 			  "%s: tried to flag a GPIO set as output for IRQ\n",
 			  __func__);
 		return -EIO;
 	}
 
-	set_bit(FLAG_USED_AS_IRQ, &chip->gpiodev->descs[offset].flags);
+	set_bit(FLAG_USED_AS_IRQ, &desc->flags);
 	return 0;
 }
 EXPORT_SYMBOL_GPL(gpiochip_lock_as_irq);
@@ -2188,8 +2260,8 @@ void gpiod_set_raw_array_value_cansleep(unsigned int array_size,
 	might_sleep_if(extra_checks);
 	if (!desc_array)
 		return;
-	gpiod_set_array_value_priv(true, true, array_size, desc_array,
-				   value_array);
+	gpiod_set_array_value_complex(true, true, array_size, desc_array,
+				      value_array);
 }
 EXPORT_SYMBOL_GPL(gpiod_set_raw_array_value_cansleep);
 
@@ -2211,8 +2283,8 @@ void gpiod_set_array_value_cansleep(unsigned int array_size,
 	might_sleep_if(extra_checks);
 	if (!desc_array)
 		return;
-	gpiod_set_array_value_priv(false, true, array_size, desc_array,
-				   value_array);
+	gpiod_set_array_value_complex(false, true, array_size, desc_array,
+				      value_array);
 }
 EXPORT_SYMBOL_GPL(gpiod_set_array_value_cansleep);
 
@@ -2726,15 +2798,16 @@ int gpiod_hog(struct gpio_desc *desc, const char *name,
 
 	local_desc = gpiochip_request_own_desc(chip, hwnum, name);
 	if (IS_ERR(local_desc)) {
-		pr_err("requesting hog GPIO %s (chip %s, offset %d) failed\n",
-		       name, chip->label, hwnum);
-		return PTR_ERR(local_desc);
+		status = PTR_ERR(local_desc);
+		pr_err("requesting hog GPIO %s (chip %s, offset %d) failed, %d\n",
+		       name, chip->label, hwnum, status);
+		return status;
 	}
 
 	status = gpiod_configure_flags(desc, name, lflags, dflags);
 	if (status < 0) {
-		pr_err("setup of hog GPIO %s (chip %s, offset %d) failed\n",
-		       name, chip->label, hwnum);
+		pr_err("setup of hog GPIO %s (chip %s, offset %d) failed, %d\n",
+		       name, chip->label, hwnum, status);
 		gpiochip_free_own_desc(desc);
 		return status;
 	}
diff --git a/drivers/gpio/gpiolib.h b/drivers/gpio/gpiolib.h
index e30e5fdb1..2d9ea5e0c 100644
--- a/drivers/gpio/gpiolib.h
+++ b/drivers/gpio/gpiolib.h
@@ -141,6 +141,10 @@ struct gpio_desc *of_get_named_gpiod_flags(struct device_node *np,
 		   const char *list_name, int index, enum of_gpio_flags *flags);
 
 struct gpio_desc *gpiochip_get_desc(struct gpio_chip *chip, u16 hwnum);
+void gpiod_set_array_value_complex(bool raw, bool can_sleep,
+				   unsigned int array_size,
+				   struct gpio_desc **desc_array,
+				   int *value_array);
 
 extern struct spinlock gpio_lock;
 extern struct list_head gpio_devices;