Merge tag 'gpio-v3.12-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio

Pull GPIO updates from Linus Walleij:
 "This is the bulk of GPIO changes for the v3.12 series:

   - A new driver for the TZ1090 PDC which is used on the metag
     architecture.

   - A new driver for the Kontron ETX or COMexpress GPIO block.  This is
     found on some ETX x86 devices.

   - A new driver for the Fintek Super-I/O chips, used on some x86
     boards.

   - Added device tree probing on a few select GPIO blocks.

   - Drop the Exynos support from the Samsung GPIO driver.

     The Samsung maintainers have moved over to use the modernized pin
     control driver to provide GPIO for the modern platforms instead.

   - The usual bunch of non-critical fixes and cleanups"

* tag 'gpio-v3.12-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio: (36 commits)
  gpio: return -ENOTSUPP if debounce cannot be set
  gpio: improve error path in gpiolib
  gpio: add GPIO support for F71882FG and F71889F
  of: add vendor prefix for Microchip Technology Inc
  gpio: mcp23s08: rename the device tree property
  gpio: samsung: Drop support for Exynos SoCs
  gpio: pcf857x: Remove pdata argument to pcf857x_irq_domain_init()
  gpio: pcf857x: Sort headers alphabetically
  gpio: max7301: Reverting "Do not force SPI speed when using OF Platform"
  gpio: Fix bit masking in Kontron PLD GPIO driver
  gpio: pca953x: fix gpio input on gpio offsets >= 8
  drivers/gpio: simplify use of devm_ioremap_resource
  drivers/gpio/gpio-omap.c: convert comma to semicolon
  gpio-lynxpoint: Fix warning about unbalanced pm_runtime_enable
  gpio: Fix platform driver name in Kontron PLD GPIO driver
  gpio: adnp: Fix segfault if request_threaded_irq fails
  gpio: msm: Staticize local variable 'msm_gpio'
  gpio: gpiolib-of.c: make error message more meaningful by adding the node name and index
  gpio: use dev_get_platdata()
  gpio/mxc: add chained_irq_enter/exit() to mx2_gpio_irq_handler
  ...

49 files changed, 1775 insertions, 1019 deletions

diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
index b2450ba..349b161 100644
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -146,6 +146,16 @@ config GPIO_MM_LANTIQ
 	  (EBU) found on Lantiq SoCs. The gpios are output only as they are
 	  created by attaching a 16bit latch to the bus.
 
+config GPIO_F7188X
+	tristate "F71882FG and F71889F GPIO support"
+	depends on X86
+	help
+	  This option enables support for GPIOs found on Fintek Super-I/O
+	  chips F71882FG and F71889F.
+
+	  To compile this driver as a module, choose M here: the module will
+	  be called f7188x-gpio.
+
 config GPIO_MPC5200
 	def_bool y
 	depends on PPC_MPC52xx
@@ -242,6 +252,21 @@ config GPIO_TS5500
 	  blocks of the TS-5500: DIO1, DIO2 and the LCD port, and the TS-5600
 	  LCD port.
 
+config GPIO_TZ1090
+	bool "Toumaz Xenif TZ1090 GPIO support"
+	depends on SOC_TZ1090
+	select GENERIC_IRQ_CHIP
+	default y
+	help
+	  Say yes here to support Toumaz Xenif TZ1090 GPIOs.
+
+config GPIO_TZ1090_PDC
+	bool "Toumaz Xenif TZ1090 PDC GPIO support"
+	depends on SOC_TZ1090
+	default y
+	help
+	  Say yes here to support Toumaz Xenif TZ1090 PDC GPIOs.
+
 config GPIO_XILINX
 	bool "Xilinx GPIO support"
 	depends on PPC_OF || MICROBLAZE || ARCH_ZYNQ
@@ -676,6 +701,18 @@ config GPIO_UCB1400
 	  This enables support for the Philips UCB1400 GPIO pins.
 	  The UCB1400 is an AC97 audio codec.
 
+comment "LPC GPIO expanders:"
+
+config GPIO_KEMPLD
+	tristate "Kontron ETX / COMexpress GPIO"
+	depends on MFD_KEMPLD
+	help
+	  This enables support for the PLD GPIO interface on some Kontron ETX
+	  and COMexpress (ETXexpress) modules.
+
+	  This driver can also be built as a module. If so, the module will be
+	  called gpio-kempld.
+
 comment "MODULbus GPIO expanders:"
 
 config GPIO_JANZ_TTL
diff --git a/drivers/gpio/Makefile b/drivers/gpio/Makefile
index ef3e983..97438bf 100644
--- a/drivers/gpio/Makefile
+++ b/drivers/gpio/Makefile
@@ -24,11 +24,13 @@ obj-$(CONFIG_GPIO_DA9055)	+= gpio-da9055.o
 obj-$(CONFIG_ARCH_DAVINCI)	+= gpio-davinci.o
 obj-$(CONFIG_GPIO_EM)		+= gpio-em.o
 obj-$(CONFIG_GPIO_EP93XX)	+= gpio-ep93xx.o
+obj-$(CONFIG_GPIO_F7188X)	+= gpio-f7188x.o
 obj-$(CONFIG_GPIO_GE_FPGA)	+= gpio-ge.o
 obj-$(CONFIG_GPIO_GRGPIO)	+= gpio-grgpio.o
 obj-$(CONFIG_GPIO_ICH)		+= gpio-ich.o
 obj-$(CONFIG_GPIO_IT8761E)	+= gpio-it8761e.o
 obj-$(CONFIG_GPIO_JANZ_TTL)	+= gpio-janz-ttl.o
+obj-$(CONFIG_GPIO_KEMPLD)	+= gpio-kempld.o
 obj-$(CONFIG_ARCH_KS8695)	+= gpio-ks8695.o
 obj-$(CONFIG_GPIO_LANGWELL)	+= gpio-langwell.o
 obj-$(CONFIG_ARCH_LPC32XX)	+= gpio-lpc32xx.o
@@ -79,6 +81,8 @@ obj-$(CONFIG_GPIO_TPS65912)	+= gpio-tps65912.o
 obj-$(CONFIG_GPIO_TS5500)	+= gpio-ts5500.o
 obj-$(CONFIG_GPIO_TWL4030)	+= gpio-twl4030.o
 obj-$(CONFIG_GPIO_TWL6040)	+= gpio-twl6040.o
+obj-$(CONFIG_GPIO_TZ1090)	+= gpio-tz1090.o
+obj-$(CONFIG_GPIO_TZ1090_PDC)	+= gpio-tz1090-pdc.o
 obj-$(CONFIG_GPIO_UCB1400)	+= gpio-ucb1400.o
 obj-$(CONFIG_GPIO_VIPERBOARD)	+= gpio-viperboard.o
 obj-$(CONFIG_GPIO_VR41XX)	+= gpio-vr41xx.o
diff --git a/drivers/gpio/gpio-74x164.c b/drivers/gpio/gpio-74x164.c
index 7216079..5d518d5 100644
--- a/drivers/gpio/gpio-74x164.c
+++ b/drivers/gpio/gpio-74x164.c
@@ -129,7 +129,7 @@ static int gen_74x164_probe(struct spi_device *spi)
 	if (!chip)
 		return -ENOMEM;
 
-	pdata = spi->dev.platform_data;
+	pdata = dev_get_platdata(&spi->dev);
 	if (pdata && pdata->base)
 		chip->gpio_chip.base = pdata->base;
 	else
diff --git a/drivers/gpio/gpio-adnp.c b/drivers/gpio/gpio-adnp.c
index e60567f..c0f3fc4 100644
--- a/drivers/gpio/gpio-adnp.c
+++ b/drivers/gpio/gpio-adnp.c
@@ -490,15 +490,11 @@ static int adnp_irq_setup(struct adnp *adnp)
 	if (err != 0) {
 		dev_err(chip->dev, "can't request IRQ#%d: %d\n",
 			adnp->client->irq, err);
-		goto error;
+		return err;
 	}
 
 	chip->to_irq = adnp_gpio_to_irq;
 	return 0;
-
-error:
-	irq_domain_remove(adnp->domain);
-	return err;
 }
 
 static void adnp_irq_teardown(struct adnp *adnp)
diff --git a/drivers/gpio/gpio-adp5520.c b/drivers/gpio/gpio-adp5520.c
index f33f78d..084337d 100644
--- a/drivers/gpio/gpio-adp5520.c
+++ b/drivers/gpio/gpio-adp5520.c
@@ -89,7 +89,7 @@ static int adp5520_gpio_direction_output(struct gpio_chip *chip,
 
 static int adp5520_gpio_probe(struct platform_device *pdev)
 {
-	struct adp5520_gpio_platform_data *pdata = pdev->dev.platform_data;
+	struct adp5520_gpio_platform_data *pdata = dev_get_platdata(&pdev->dev);
 	struct adp5520_gpio *dev;
 	struct gpio_chip *gc;
 	int ret, i, gpios;
diff --git a/drivers/gpio/gpio-adp5588.c b/drivers/gpio/gpio-adp5588.c
index 2ba5698..90fc4c9 100644
--- a/drivers/gpio/gpio-adp5588.c
+++ b/drivers/gpio/gpio-adp5588.c
@@ -276,7 +276,8 @@ static irqreturn_t adp5588_irq_handler(int irq, void *devid)
 static int adp5588_irq_setup(struct adp5588_gpio *dev)
 {
 	struct i2c_client *client = dev->client;
-	struct adp5588_gpio_platform_data *pdata = client->dev.platform_data;
+	struct adp5588_gpio_platform_data *pdata =
+			dev_get_platdata(&client->dev);
 	unsigned gpio;
 	int ret;
 
@@ -349,7 +350,8 @@ static void adp5588_irq_teardown(struct adp5588_gpio *dev)
 static int adp5588_gpio_probe(struct i2c_client *client,
 					const struct i2c_device_id *id)
 {
-	struct adp5588_gpio_platform_data *pdata = client->dev.platform_data;
+	struct adp5588_gpio_platform_data *pdata =
+			dev_get_platdata(&client->dev);
 	struct adp5588_gpio *dev;
 	struct gpio_chip *gc;
 	int ret, i, revid;
@@ -440,7 +442,8 @@ err:
 
 static int adp5588_gpio_remove(struct i2c_client *client)
 {
-	struct adp5588_gpio_platform_data *pdata = client->dev.platform_data;
+	struct adp5588_gpio_platform_data *pdata =
+			dev_get_platdata(&client->dev);
 	struct adp5588_gpio *dev = i2c_get_clientdata(client);
 	int ret;
 
diff --git a/drivers/gpio/gpio-arizona.c b/drivers/gpio/gpio-arizona.c
index 0ea853f..fa8b6a7 100644
--- a/drivers/gpio/gpio-arizona.c
+++ b/drivers/gpio/gpio-arizona.c
@@ -97,7 +97,7 @@ static struct gpio_chip template_chip = {
 static int arizona_gpio_probe(struct platform_device *pdev)
 {
 	struct arizona *arizona = dev_get_drvdata(pdev->dev.parent);
-	struct arizona_pdata *pdata = arizona->dev->platform_data;
+	struct arizona_pdata *pdata = dev_get_platdata(arizona->dev);
 	struct arizona_gpio *arizona_gpio;
 	int ret;
 
diff --git a/drivers/gpio/gpio-da9052.c b/drivers/gpio/gpio-da9052.c
index 29b11e9..9b77dc0 100644
--- a/drivers/gpio/gpio-da9052.c
+++ b/drivers/gpio/gpio-da9052.c
@@ -216,7 +216,7 @@ static int da9052_gpio_probe(struct platform_device *pdev)
 		return -ENOMEM;
 
 	gpio->da9052 = dev_get_drvdata(pdev->dev.parent);
-	pdata = gpio->da9052->dev->platform_data;
+	pdata = dev_get_platdata(gpio->da9052->dev);
 
 	gpio->gp = reference_gp;
 	if (pdata && pdata->gpio_base)
diff --git a/drivers/gpio/gpio-da9055.c b/drivers/gpio/gpio-da9055.c
index fd6dfe3..7ef0820 100644
--- a/drivers/gpio/gpio-da9055.c
+++ b/drivers/gpio/gpio-da9055.c
@@ -150,7 +150,7 @@ static int da9055_gpio_probe(struct platform_device *pdev)
 		return -ENOMEM;
 
 	gpio->da9055 = dev_get_drvdata(pdev->dev.parent);
-	pdata = gpio->da9055->dev->platform_data;
+	pdata = dev_get_platdata(gpio->da9055->dev);
 
 	gpio->gp = reference_gp;
 	if (pdata && pdata->gpio_base)
diff --git a/drivers/gpio/gpio-em.c b/drivers/gpio/gpio-em.c
index 5cba855..c6e1f08 100644
--- a/drivers/gpio/gpio-em.c
+++ b/drivers/gpio/gpio-em.c
@@ -30,6 +30,7 @@
 #include <linux/gpio.h>
 #include <linux/slab.h>
 #include <linux/module.h>
+#include <linux/pinctrl/consumer.h>
 #include <linux/platform_data/gpio-em.h>
 
 struct em_gio_priv {
@@ -216,6 +217,21 @@ static int em_gio_to_irq(struct gpio_chip *chip, unsigned offset)
 	return irq_create_mapping(gpio_to_priv(chip)->irq_domain, offset);
 }
 
+static int em_gio_request(struct gpio_chip *chip, unsigned offset)
+{
+	return pinctrl_request_gpio(chip->base + offset);
+}
+
+static void em_gio_free(struct gpio_chip *chip, unsigned offset)
+{
+	pinctrl_free_gpio(chip->base + offset);
+
+	/* Set the GPIO as an input to ensure that the next GPIO request won't
+	* drive the GPIO pin as an output.
+	*/
+	em_gio_direction_input(chip, offset);
+}
+
 static int em_gio_irq_domain_map(struct irq_domain *h, unsigned int virq,
 				 irq_hw_number_t hw)
 {
@@ -237,7 +253,7 @@ static struct irq_domain_ops em_gio_irq_domain_ops = {
 static int em_gio_probe(struct platform_device *pdev)
 {
 	struct gpio_em_config pdata_dt;
-	struct gpio_em_config *pdata = pdev->dev.platform_data;
+	struct gpio_em_config *pdata = dev_get_platdata(&pdev->dev);
 	struct em_gio_priv *p;
 	struct resource *io[2], *irq[2];
 	struct gpio_chip *gpio_chip;
@@ -308,6 +324,8 @@ static int em_gio_probe(struct platform_device *pdev)
 	gpio_chip->direction_output = em_gio_direction_output;
 	gpio_chip->set = em_gio_set;
 	gpio_chip->to_irq = em_gio_to_irq;
+	gpio_chip->request = em_gio_request;
+	gpio_chip->free = em_gio_free;
 	gpio_chip->label = name;
 	gpio_chip->owner = THIS_MODULE;
 	gpio_chip->base = pdata->gpio_base;
@@ -351,6 +369,13 @@ static int em_gio_probe(struct platform_device *pdev)
 		dev_err(&pdev->dev, "failed to add GPIO controller\n");
 		goto err1;
 	}
+
+	if (pdata->pctl_name) {
+		ret = gpiochip_add_pin_range(gpio_chip, pdata->pctl_name, 0,
+					     gpio_chip->base, gpio_chip->ngpio);
+		if (ret < 0)
+			dev_warn(&pdev->dev, "failed to add pin range\n");
+	}
 	return 0;
 
 err1:
diff --git a/drivers/gpio/gpio-f7188x.c b/drivers/gpio/gpio-f7188x.c
new file mode 100644
index 0000000..9cb8320
--- /dev/null
+++ b/drivers/gpio/gpio-f7188x.c
@@ -0,0 +1,469 @@
+/*
+ * GPIO driver for Fintek Super-I/O F71882 and F71889
+ *
+ * Copyright (C) 2010-2013 LaCie
+ *
+ * Author: Simon Guinot <simon.guinot@sequanux.org>
+ *
+ * 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 Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/io.h>
+#include <linux/gpio.h>
+
+#define DRVNAME "gpio-f7188x"
+
+/*
+ * Super-I/O registers
+ */
+#define SIO_LDSEL		0x07	/* Logical device select */
+#define SIO_DEVID		0x20	/* Device ID (2 bytes) */
+#define SIO_DEVREV		0x22	/* Device revision */
+#define SIO_MANID		0x23	/* Fintek ID (2 bytes) */
+
+#define SIO_LD_GPIO		0x06	/* GPIO logical device */
+#define SIO_UNLOCK_KEY		0x87	/* Key to enable Super-I/O */
+#define SIO_LOCK_KEY		0xAA	/* Key to disable Super-I/O */
+
+#define SIO_FINTEK_ID		0x1934	/* Manufacturer ID */
+#define SIO_F71882_ID		0x0541	/* F71882 chipset ID */
+#define SIO_F71889_ID		0x0909	/* F71889 chipset ID */
+
+enum chips { f71882fg, f71889f };
+
+static const char * const f7188x_names[] = {
+	"f71882fg",
+	"f71889f",
+};
+
+struct f7188x_sio {
+	int addr;
+	enum chips type;
+};
+
+struct f7188x_gpio_bank {
+	struct gpio_chip chip;
+	unsigned int regbase;
+	struct f7188x_gpio_data *data;
+};
+
+struct f7188x_gpio_data {
+	struct f7188x_sio *sio;
+	int nr_bank;
+	struct f7188x_gpio_bank *bank;
+};
+
+/*
+ * Super-I/O functions.
+ */
+
+static inline int superio_inb(int base, int reg)
+{
+	outb(reg, base);
+	return inb(base + 1);
+}
+
+static int superio_inw(int base, int reg)
+{
+	int val;
+
+	outb(reg++, base);
+	val = inb(base + 1) << 8;
+	outb(reg, base);
+	val |= inb(base + 1);
+
+	return val;
+}
+
+static inline void superio_outb(int base, int reg, int val)
+{
+	outb(reg, base);
+	outb(val, base + 1);
+}
+
+static inline int superio_enter(int base)
+{
+	/* Don't step on other drivers' I/O space by accident. */
+	if (!request_muxed_region(base, 2, DRVNAME)) {
+		pr_err(DRVNAME "I/O address 0x%04x already in use\n", base);
+		return -EBUSY;
+	}
+
+	/* According to the datasheet the key must be send twice. */
+	outb(SIO_UNLOCK_KEY, base);
+	outb(SIO_UNLOCK_KEY, base);
+
+	return 0;
+}
+
+static inline void superio_select(int base, int ld)
+{
+	outb(SIO_LDSEL, base);
+	outb(ld, base + 1);
+}
+
+static inline void superio_exit(int base)
+{
+	outb(SIO_LOCK_KEY, base);
+	release_region(base, 2);
+}
+
+/*
+ * GPIO chip.
+ */
+
+static int f7188x_gpio_direction_in(struct gpio_chip *chip, unsigned offset);
+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);
+
+#define F7188X_GPIO_BANK(_base, _ngpio, _regbase)			\
+	{								\
+		.chip = {						\
+			.label            = DRVNAME,			\
+			.owner            = THIS_MODULE,		\
+			.direction_input  = f7188x_gpio_direction_in,	\
+			.get              = f7188x_gpio_get,		\
+			.direction_output = f7188x_gpio_direction_out,	\
+			.set              = f7188x_gpio_set,		\
+			.base             = _base,			\
+			.ngpio            = _ngpio,			\
+		},							\
+		.regbase = _regbase,					\
+	}
+
+#define gpio_dir(base) (base + 0)
+#define gpio_data_out(base) (base + 1)
+#define gpio_data_in(base) (base + 2)
+/* Output mode register (0:open drain 1:push-pull). */
+#define gpio_out_mode(base) (base + 3)
+
+static struct f7188x_gpio_bank f71882_gpio_bank[] = {
+	F7188X_GPIO_BANK(0 , 8, 0xF0),
+	F7188X_GPIO_BANK(10, 8, 0xE0),
+	F7188X_GPIO_BANK(20, 8, 0xD0),
+	F7188X_GPIO_BANK(30, 4, 0xC0),
+	F7188X_GPIO_BANK(40, 4, 0xB0),
+};
+
+static struct f7188x_gpio_bank f71889_gpio_bank[] = {
+	F7188X_GPIO_BANK(0 , 7, 0xF0),
+	F7188X_GPIO_BANK(10, 7, 0xE0),
+	F7188X_GPIO_BANK(20, 8, 0xD0),
+	F7188X_GPIO_BANK(30, 8, 0xC0),
+	F7188X_GPIO_BANK(40, 8, 0xB0),
+	F7188X_GPIO_BANK(50, 5, 0xA0),
+	F7188X_GPIO_BANK(60, 8, 0x90),
+	F7188X_GPIO_BANK(70, 8, 0x80),
+};
+
+static int f7188x_gpio_direction_in(struct gpio_chip *chip, unsigned offset)
+{
+	int err;
+	struct f7188x_gpio_bank *bank =
+		container_of(chip, struct f7188x_gpio_bank, chip);
+	struct f7188x_sio *sio = bank->data->sio;
+	u8 dir;
+
+	err = superio_enter(sio->addr);
+	if (err)
+		return err;
+	superio_select(sio->addr, SIO_LD_GPIO);
+
+	dir = superio_inb(sio->addr, gpio_dir(bank->regbase));
+	dir &= ~(1 << offset);
+	superio_outb(sio->addr, gpio_dir(bank->regbase), dir);
+
+	superio_exit(sio->addr);
+
+	return 0;
+}
+
+static int f7188x_gpio_get(struct gpio_chip *chip, unsigned offset)
+{
+	int err;
+	struct f7188x_gpio_bank *bank =
+		container_of(chip, struct f7188x_gpio_bank, chip);
+	struct f7188x_sio *sio = bank->data->sio;
+	u8 dir, data;
+
+	err = superio_enter(sio->addr);
+	if (err)
+		return err;
+	superio_select(sio->addr, SIO_LD_GPIO);
+
+	dir = superio_inb(sio->addr, gpio_dir(bank->regbase));
+	dir = !!(dir & (1 << offset));
+	if (dir)
+		data = superio_inb(sio->addr, gpio_data_out(bank->regbase));
+	else
+		data = superio_inb(sio->addr, gpio_data_in(bank->regbase));
+
+	superio_exit(sio->addr);
+
+	return !!(data & 1 << offset);
+}
+
+static int f7188x_gpio_direction_out(struct gpio_chip *chip,
+				     unsigned offset, int value)
+{
+	int err;
+	struct f7188x_gpio_bank *bank =
+		container_of(chip, struct f7188x_gpio_bank, chip);
+	struct f7188x_sio *sio = bank->data->sio;
+	u8 dir, data_out;
+
+	err = superio_enter(sio->addr);
+	if (err)
+		return err;
+	superio_select(sio->addr, SIO_LD_GPIO);
+
+	data_out = superio_inb(sio->addr, gpio_data_out(bank->regbase));
+	if (value)
+		data_out |= (1 << offset);
+	else
+		data_out &= ~(1 << offset);
+	superio_outb(sio->addr, gpio_data_out(bank->regbase), data_out);
+
+	dir = superio_inb(sio->addr, gpio_dir(bank->regbase));
+	dir |= (1 << offset);
+	superio_outb(sio->addr, gpio_dir(bank->regbase), dir);
+
+	superio_exit(sio->addr);
+
+	return 0;
+}
+
+static void f7188x_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
+{
+	int err;
+	struct f7188x_gpio_bank *bank =
+		container_of(chip, struct f7188x_gpio_bank, chip);
+	struct f7188x_sio *sio = bank->data->sio;
+	u8 data_out;
+
+	err = superio_enter(sio->addr);
+	if (err)
+		return;
+	superio_select(sio->addr, SIO_LD_GPIO);
+
+	data_out = superio_inb(sio->addr, gpio_data_out(bank->regbase));
+	if (value)
+		data_out |= (1 << offset);
+	else
+		data_out &= ~(1 << offset);
+	superio_outb(sio->addr, gpio_data_out(bank->regbase), data_out);
+
+	superio_exit(sio->addr);
+}
+
+/*
+ * Platform device and driver.
+ */
+
+static int f7188x_gpio_probe(struct platform_device *pdev)
+{
+	int err;
+	int i;
+	struct f7188x_sio *sio = pdev->dev.platform_data;
+	struct f7188x_gpio_data *data;
+
+	data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
+	if (!data)
+		return -ENOMEM;
+
+	switch (sio->type) {
+	case f71882fg:
+		data->nr_bank = ARRAY_SIZE(f71882_gpio_bank);
+		data->bank = f71882_gpio_bank;
+		break;
+	case f71889f:
+		data->nr_bank = ARRAY_SIZE(f71889_gpio_bank);
+		data->bank = f71889_gpio_bank;
+		break;
+	default:
+		return -ENODEV;
+	}
+	data->sio = sio;
+
+	platform_set_drvdata(pdev, data);
+
+	/* For each GPIO bank, register a GPIO chip. */
+	for (i = 0; i < data->nr_bank; i++) {
+		struct f7188x_gpio_bank *bank = &data->bank[i];
+
+		bank->chip.dev = &pdev->dev;
+		bank->data = data;
+
+		err = gpiochip_add(&bank->chip);
+		if (err) {
+			dev_err(&pdev->dev,
+				"Failed to register gpiochip %d: %d\n",
+				i, err);
+			goto err_gpiochip;
+		}
+	}
+
+	return 0;
+
+err_gpiochip:
+	for (i = i - 1; i >= 0; i--) {
+		struct f7188x_gpio_bank *bank = &data->bank[i];
+		int tmp;
+
+		tmp = gpiochip_remove(&bank->chip);
+		if (tmp < 0)
+			dev_err(&pdev->dev,
+				"Failed to remove gpiochip %d: %d\n",
+				i, tmp);
+	}
+
+	return err;
+}
+
+static int f7188x_gpio_remove(struct platform_device *pdev)
+{
+	int err;
+	int i;
+	struct f7188x_gpio_data *data = platform_get_drvdata(pdev);
+
+	for (i = 0; i < data->nr_bank; i++) {
+		struct f7188x_gpio_bank *bank = &data->bank[i];
+
+		err = gpiochip_remove(&bank->chip);
+		if (err) {
+			dev_err(&pdev->dev,
+				"Failed to remove GPIO gpiochip %d: %d\n",
+				i, err);
+			return err;
+		}
+	}
+
+	return 0;
+}
+
+static int __init f7188x_find(int addr, struct f7188x_sio *sio)
+{
+	int err;
+	u16 devid;
+
+	err = superio_enter(addr);
+	if (err)
+		return err;
+
+	err = -ENODEV;
+	devid = superio_inw(addr, SIO_MANID);
+	if (devid != SIO_FINTEK_ID) {
+		pr_debug(DRVNAME ": Not a Fintek device at 0x%08x\n", addr);
+		goto err;
+	}
+
+	devid = superio_inw(addr, SIO_DEVID);
+	switch (devid) {
+	case SIO_F71882_ID:
+		sio->type = f71882fg;
+		break;
+	case SIO_F71889_ID:
+		sio->type = f71889f;
+		break;
+	default:
+		pr_info(DRVNAME ": Unsupported Fintek device 0x%04x\n", devid);
+		goto err;
+	}
+	sio->addr = addr;
+	err = 0;
+
+	pr_info(DRVNAME ": Found %s at %#x, revision %d\n",
+		f7188x_names[sio->type],
+		(unsigned int) addr,
+		(int) superio_inb(addr, SIO_DEVREV));
+
+err:
+	superio_exit(addr);
+	return err;
+}
+
+static struct platform_device *f7188x_gpio_pdev;
+
+static int __init
+f7188x_gpio_device_add(const struct f7188x_sio *sio)
+{
+	int err;
+
+	f7188x_gpio_pdev = platform_device_alloc(DRVNAME, -1);
+	if (!f7188x_gpio_pdev)
+		return -ENOMEM;
+
+	err = platform_device_add_data(f7188x_gpio_pdev,
+				       sio, sizeof(*sio));
+	if (err) {
+		pr_err(DRVNAME "Platform data allocation failed\n");
+		goto err;
+	}
+
+	err = platform_device_add(f7188x_gpio_pdev);
+	if (err) {
+		pr_err(DRVNAME "Device addition failed\n");
+		goto err;
+	}
+
+	return 0;
+
+err:
+	platform_device_put(f7188x_gpio_pdev);
+
+	return err;
+}
+
+/*
+ * Try to match a supported Fintech device by reading the (hard-wired)
+ * configuration I/O ports. If available, then register both the platform
+ * device and driver to support the GPIOs.
+ */
+
+static struct platform_driver f7188x_gpio_driver = {
+	.driver = {
+		.owner	= THIS_MODULE,
+		.name	= DRVNAME,
+	},
+	.probe		= f7188x_gpio_probe,
+	.remove		= f7188x_gpio_remove,
+};
+
+static int __init f7188x_gpio_init(void)
+{
+	int err;
+	struct f7188x_sio sio;
+
+	if (f7188x_find(0x2e, &sio) &&
+	    f7188x_find(0x4e, &sio))
+		return -ENODEV;
+
+	err = platform_driver_register(&f7188x_gpio_driver);
+	if (!err) {
+		err = f7188x_gpio_device_add(&sio);
+		if (err)
+			platform_driver_unregister(&f7188x_gpio_driver);
+	}
+
+	return err;
+}
+subsys_initcall(f7188x_gpio_init);
+
+static void __exit f7188x_gpio_exit(void)
+{
+	platform_device_unregister(f7188x_gpio_pdev);
+	platform_driver_unregister(&f7188x_gpio_driver);
+}
+module_exit(f7188x_gpio_exit);
+
+MODULE_DESCRIPTION("GPIO driver for Super-I/O chips F71882FG and F71889F");
+MODULE_AUTHOR("Simon Guinot <simon.guinot@sequanux.org>");
+MODULE_LICENSE("GPL");
diff --git a/drivers/gpio/gpio-ich.c b/drivers/gpio/gpio-ich.c
index 2729e3d..814addb 100644
--- a/drivers/gpio/gpio-ich.c
+++ b/drivers/gpio/gpio-ich.c
@@ -354,7 +354,7 @@ static int ichx_gpio_probe(struct platform_device *pdev)
 {
 	struct resource *res_base, *res_pm;
 	int err;
-	struct lpc_ich_info *ich_info = pdev->dev.platform_data;
+	struct lpc_ich_info *ich_info = dev_get_platdata(&pdev->dev);
 
 	if (!ich_info)
 		return -ENODEV;
diff --git a/drivers/gpio/gpio-janz-ttl.c b/drivers/gpio/gpio-janz-ttl.c
index 7d0a041..2ecd3a0 100644
--- a/drivers/gpio/gpio-janz-ttl.c
+++ b/drivers/gpio/gpio-janz-ttl.c
@@ -149,7 +149,7 @@ static int ttl_probe(struct platform_device *pdev)
 	struct resource *res;
 	int ret;
 
-	pdata = pdev->dev.platform_data;
+	pdata = dev_get_platdata(&pdev->dev);
 	if (!pdata) {
 		dev_err(dev, "no platform data\n");
 		ret = -ENXIO;
diff --git a/drivers/gpio/gpio-kempld.c b/drivers/gpio/gpio-kempld.c
new file mode 100644
index 0000000..efdc392
--- /dev/null
+++ b/drivers/gpio/gpio-kempld.c
@@ -0,0 +1,219 @@
+/*
+ * Kontron PLD GPIO driver
+ *
+ * Copyright (c) 2010-2013 Kontron Europe GmbH
+ * Author: Michael Brunner <michael.brunner@kontron.com>
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but 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.
+ */
+
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/bitops.h>
+#include <linux/errno.h>
+#include <linux/platform_device.h>
+#include <linux/gpio.h>
+#include <linux/mfd/kempld.h>
+
+#define KEMPLD_GPIO_MAX_NUM		16
+#define KEMPLD_GPIO_MASK(x)		(1 << ((x) % 8))
+#define KEMPLD_GPIO_DIR_NUM(x)		(0x40 + (x) / 8)
+#define KEMPLD_GPIO_LVL_NUM(x)		(0x42 + (x) / 8)
+#define KEMPLD_GPIO_EVT_LVL_EDGE	0x46
+#define KEMPLD_GPIO_IEN			0x4A
+
+struct kempld_gpio_data {
+	struct gpio_chip		chip;
+	struct kempld_device_data	*pld;
+};
+
+/*
+ * Set or clear GPIO bit
+ * kempld_get_mutex must be called prior to calling this function.
+ */
+static void kempld_gpio_bitop(struct kempld_device_data *pld,
+			      u8 reg, u8 bit, u8 val)
+{
+	u8 status;
+
+	status = kempld_read8(pld, reg);
+	if (val)
+		status |= KEMPLD_GPIO_MASK(bit);
+	else
+		status &= ~KEMPLD_GPIO_MASK(bit);
+	kempld_write8(pld, reg, status);
+}
+
+static int kempld_gpio_get_bit(struct kempld_device_data *pld, u8 reg, u8 bit)
+{
+	u8 status;
+
+	kempld_get_mutex(pld);
+	status = kempld_read8(pld, reg);
+	kempld_release_mutex(pld);
+
+	return !!(status & KEMPLD_GPIO_MASK(bit));
+}
+
+static int kempld_gpio_get(struct gpio_chip *chip, unsigned offset)
+{
+	struct kempld_gpio_data *gpio
+		= container_of(chip, struct kempld_gpio_data, chip);
+	struct kempld_device_data *pld = gpio->pld;
+
+	return kempld_gpio_get_bit(pld, KEMPLD_GPIO_LVL_NUM(offset), offset);
+}
+
+static void kempld_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
+{
+	struct kempld_gpio_data *gpio
+		= container_of(chip, struct kempld_gpio_data, chip);
+	struct kempld_device_data *pld = gpio->pld;
+
+	kempld_get_mutex(pld);
+	kempld_gpio_bitop(pld, KEMPLD_GPIO_LVL_NUM(offset), offset, value);
+	kempld_release_mutex(pld);
+}
+
+static int kempld_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
+{
+	struct kempld_gpio_data *gpio
+		= container_of(chip, struct kempld_gpio_data, chip);
+	struct kempld_device_data *pld = gpio->pld;
+
+	kempld_get_mutex(pld);
+	kempld_gpio_bitop(pld, KEMPLD_GPIO_DIR_NUM(offset), offset, 0);
+	kempld_release_mutex(pld);
+
+	return 0;
+}
+
+static int kempld_gpio_direction_output(struct gpio_chip *chip, unsigned offset,
+					int value)
+{
+	struct kempld_gpio_data *gpio
+		= container_of(chip, struct kempld_gpio_data, chip);
+	struct kempld_device_data *pld = gpio->pld;
+
+	kempld_get_mutex(pld);
+	kempld_gpio_bitop(pld, KEMPLD_GPIO_LVL_NUM(offset), offset, value);
+	kempld_gpio_bitop(pld, KEMPLD_GPIO_DIR_NUM(offset), offset, 1);
+	kempld_release_mutex(pld);
+
+	return 0;
+}
+
+static int kempld_gpio_get_direction(struct gpio_chip *chip, unsigned offset)
+{
+	struct kempld_gpio_data *gpio
+		= container_of(chip, struct kempld_gpio_data, chip);
+	struct kempld_device_data *pld = gpio->pld;
+
+	return kempld_gpio_get_bit(pld, KEMPLD_GPIO_DIR_NUM(offset), offset);
+}
+
+static int kempld_gpio_pincount(struct kempld_device_data *pld)
+{
+	u16 evt, evt_back;
+
+	kempld_get_mutex(pld);
+
+	/* Backup event register as it might be already initialized */
+	evt_back = kempld_read16(pld, KEMPLD_GPIO_EVT_LVL_EDGE);
+	/* Clear event register */
+	kempld_write16(pld, KEMPLD_GPIO_EVT_LVL_EDGE, 0x0000);
+	/* Read back event register */
+	evt = kempld_read16(pld, KEMPLD_GPIO_EVT_LVL_EDGE);
+	/* Restore event register */
+	kempld_write16(pld, KEMPLD_GPIO_EVT_LVL_EDGE, evt_back);
+
+	kempld_release_mutex(pld);
+
+	return evt ? __ffs(evt) : 16;
+}
+
+static int kempld_gpio_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct kempld_device_data *pld = dev_get_drvdata(dev->parent);
+	struct kempld_platform_data *pdata = dev_get_platdata(pld->dev);
+	struct kempld_gpio_data *gpio;
+	struct gpio_chip *chip;
+	int ret;
+
+	if (pld->info.spec_major < 2) {
+		dev_err(dev,
+			"Driver only supports GPIO devices compatible to PLD spec. rev. 2.0 or higher\n");
+		return -ENODEV;
+	}
+
+	gpio = devm_kzalloc(dev, sizeof(*gpio), GFP_KERNEL);
+	if (gpio == NULL)
+		return -ENOMEM;
+
+	gpio->pld = pld;
+
+	platform_set_drvdata(pdev, gpio);
+
+	chip = &gpio->chip;
+	chip->label = "gpio-kempld";
+	chip->owner = THIS_MODULE;
+	chip->dev = dev;
+	chip->can_sleep = 1;
+	if (pdata && pdata->gpio_base)
+		chip->base = pdata->gpio_base;
+	else
+		chip->base = -1;
+	chip->direction_input = kempld_gpio_direction_input;
+	chip->direction_output = kempld_gpio_direction_output;
+	chip->get_direction = kempld_gpio_get_direction;
+	chip->get = kempld_gpio_get;
+	chip->set = kempld_gpio_set;
+	chip->ngpio = kempld_gpio_pincount(pld);
+	if (chip->ngpio == 0) {
+		dev_err(dev, "No GPIO pins detected\n");
+		return -ENODEV;
+	}
+
+	ret = gpiochip_add(chip);
+	if (ret) {
+		dev_err(dev, "Could not register GPIO chip\n");
+		return ret;
+	}
+
+	dev_info(dev, "GPIO functionality initialized with %d pins\n",
+		 chip->ngpio);
+
+	return 0;
+}
+
+static int kempld_gpio_remove(struct platform_device *pdev)
+{
+	struct kempld_gpio_data *gpio = platform_get_drvdata(pdev);
+
+	return gpiochip_remove(&gpio->chip);
+}
+
+static struct platform_driver kempld_gpio_driver = {
+	.driver = {
+		.name = "kempld-gpio",
+		.owner = THIS_MODULE,
+	},
+	.probe		= kempld_gpio_probe,
+	.remove		= kempld_gpio_remove,
+};
+
+module_platform_driver(kempld_gpio_driver);
+
+MODULE_DESCRIPTION("KEM PLD GPIO Driver");
+MODULE_AUTHOR("Michael Brunner <michael.brunner@kontron.com>");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:gpio-kempld");
diff --git a/drivers/gpio/gpio-lynxpoint.c b/drivers/gpio/gpio-lynxpoint.c
index 761c470..2d9ca60 100644
--- a/drivers/gpio/gpio-lynxpoint.c
+++ b/drivers/gpio/gpio-lynxpoint.c
@@ -444,6 +444,7 @@ static int lp_gpio_remove(struct platform_device *pdev)
 {
 	struct lp_gpio *lg = platform_get_drvdata(pdev);
 	int err;
+	pm_runtime_disable(&pdev->dev);
 	err = gpiochip_remove(&lg->chip);
 	if (err)
 		dev_warn(&pdev->dev, "failed to remove gpio_chip.\n");
diff --git a/drivers/gpio/gpio-max7301.c b/drivers/gpio/gpio-max7301.c
index 3b16ab7..6e1c984 100644
--- a/drivers/gpio/gpio-max7301.c
+++ b/drivers/gpio/gpio-max7301.c
@@ -56,8 +56,7 @@ static int max7301_probe(struct spi_device *spi)
 	int ret;
 
 	/* bits_per_word cannot be configured in platform data */
-	if (spi->dev.platform_data)
-		spi->bits_per_word = 16;
+	spi->bits_per_word = 16;
 	ret = spi_setup(spi);
 	if (ret < 0)
 		return ret;
diff --git a/drivers/gpio/gpio-max730x.c b/drivers/gpio/gpio-max730x.c
index 0009234..f4f4ed1 100644
--- a/drivers/gpio/gpio-max730x.c
+++ b/drivers/gpio/gpio-max730x.c
@@ -166,7 +166,7 @@ int __max730x_probe(struct max7301 *ts)
 	struct max7301_platform_data *pdata;
 	int i, ret;
 
-	pdata = dev->platform_data;
+	pdata = dev_get_platdata(dev);
 
 	mutex_init(&ts->lock);
 	dev_set_drvdata(dev, ts);
diff --git a/drivers/gpio/gpio-max732x.c b/drivers/gpio/gpio-max732x.c
index d4b51b1..91ad74d 100644
--- a/drivers/gpio/gpio-max732x.c
+++ b/drivers/gpio/gpio-max732x.c
@@ -453,7 +453,7 @@ static int max732x_irq_setup(struct max732x_chip *chip,
 			     const struct i2c_device_id *id)
 {
 	struct i2c_client *client = chip->client;
-	struct max732x_platform_data *pdata = client->dev.platform_data;
+	struct max732x_platform_data *pdata = dev_get_platdata(&client->dev);
 	int has_irq = max732x_features[id->driver_data] >> 32;
 	int ret;
 
@@ -512,7 +512,7 @@ static int max732x_irq_setup(struct max732x_chip *chip,
 			     const struct i2c_device_id *id)
 {
 	struct i2c_client *client = chip->client;
-	struct max732x_platform_data *pdata = client->dev.platform_data;
+	struct max732x_platform_data *pdata = dev_get_platdata(&client->dev);
 	int has_irq = max732x_features[id->driver_data] >> 32;
 
 	if (pdata->irq_base && has_irq != INT_NONE)
@@ -583,7 +583,7 @@ static int max732x_probe(struct i2c_client *client,
 	uint16_t addr_a, addr_b;
 	int ret, nr_port;
 
-	pdata = client->dev.platform_data;
+	pdata = dev_get_platdata(&client->dev);
 	if (pdata == NULL) {
 		dev_dbg(&client->dev, "no platform data\n");
 		return -EINVAL;
@@ -653,7 +653,7 @@ out_failed:
 
 static int max732x_remove(struct i2c_client *client)
 {
-	struct max732x_platform_data *pdata = client->dev.platform_data;
+	struct max732x_platform_data *pdata = dev_get_platdata(&client->dev);
 	struct max732x_chip *chip = i2c_get_clientdata(client);
 	int ret;
 
diff --git a/drivers/gpio/gpio-mc33880.c b/drivers/gpio/gpio-mc33880.c
index 63a7a1b..3fd2caa 100644
--- a/drivers/gpio/gpio-mc33880.c
+++ b/drivers/gpio/gpio-mc33880.c
@@ -86,7 +86,7 @@ static int mc33880_probe(struct spi_device *spi)
 	struct mc33880_platform_data *pdata;
 	int ret;
 
-	pdata = spi->dev.platform_data;
+	pdata = dev_get_platdata(&spi->dev);
 	if (!pdata || !pdata->base) {
 		dev_dbg(&spi->dev, "incorrect or missing platform data\n");
 		return -EINVAL;
diff --git a/drivers/gpio/gpio-mcp23s08.c b/drivers/gpio/gpio-mcp23s08.c
index 6a4470b..2deb0c5 100644
--- a/drivers/gpio/gpio-mcp23s08.c
+++ b/drivers/gpio/gpio-mcp23s08.c
@@ -483,10 +483,21 @@ fail:
 #ifdef CONFIG_SPI_MASTER
 static struct of_device_id mcp23s08_spi_of_match[] = {
 	{
-		.compatible = "mcp,mcp23s08", .data = (void *) MCP_TYPE_S08,
+		.compatible = "microchip,mcp23s08",
+		.data = (void *) MCP_TYPE_S08,
 	},
 	{
-		.compatible = "mcp,mcp23s17", .data = (void *) MCP_TYPE_S17,
+		.compatible = "microchip,mcp23s17",
+		.data = (void *) MCP_TYPE_S17,
+	},
+/* NOTE: The use of the mcp prefix is deprecated and will be removed. */
+	{
+		.compatible = "mcp,mcp23s08",
+		.data = (void *) MCP_TYPE_S08,
+	},
+	{
+		.compatible = "mcp,mcp23s17",
+		.data = (void *) MCP_TYPE_S17,
 	},
 	{ },
 };
@@ -496,10 +507,21 @@ MODULE_DEVICE_TABLE(of, mcp23s08_spi_of_match);
 #if IS_ENABLED(CONFIG_I2C)
 static struct of_device_id mcp23s08_i2c_of_match[] = {
 	{
-		.compatible = "mcp,mcp23008", .data = (void *) MCP_TYPE_008,
+		.compatible = "microchip,mcp23008",
+		.data = (void *) MCP_TYPE_008,
+	},
+	{
+		.compatible = "microchip,mcp23017",
+		.data = (void *) MCP_TYPE_017,
+	},
+/* NOTE: The use of the mcp prefix is deprecated and will be removed. */
+	{
+		.compatible = "mcp,mcp23008",
+		.data = (void *) MCP_TYPE_008,
 	},
 	{
-		.compatible = "mcp,mcp23017", .data = (void *) MCP_TYPE_017,
+		.compatible = "mcp,mcp23017",
+		.data = (void *) MCP_TYPE_017,
 	},
 	{ },
 };
@@ -520,14 +542,13 @@ static int mcp230xx_probe(struct i2c_client *client,
 
 	match = of_match_device(of_match_ptr(mcp23s08_i2c_of_match),
 					&client->dev);
-	if (match) {
+	pdata = dev_get_platdata(&client->dev);
+	if (match || !pdata) {
 		base = -1;
 		pullups = 0;
 	} else {
-		pdata = client->dev.platform_data;
-		if (!pdata || !gpio_is_valid(pdata->base)) {
-			dev_dbg(&client->dev,
-					"invalid or missing platform data\n");
+		if (!gpio_is_valid(pdata->base)) {
+			dev_dbg(&client->dev, "invalid platform data\n");
 			return -EINVAL;
 		}
 		base = pdata->base;
@@ -621,10 +642,15 @@ static int mcp23s08_probe(struct spi_device *spi)
 	if (match) {
 		type = (int)match->data;
 		status = of_property_read_u32(spi->dev.of_node,
-				"mcp,spi-present-mask", &spi_present_mask);
+			    "microchip,spi-present-mask", &spi_present_mask);
 		if (status) {
-			dev_err(&spi->dev, "DT has no spi-present-mask\n");
-			return -ENODEV;
+			status = of_property_read_u32(spi->dev.of_node,
+				    "mcp,spi-present-mask", &spi_present_mask);
+			if (status) {
+				dev_err(&spi->dev,
+					"DT has no spi-present-mask\n");
+				return -ENODEV;
+			}
 		}
 		if ((spi_present_mask <= 0) || (spi_present_mask >= 256)) {
 			dev_err(&spi->dev, "invalid spi-present-mask\n");
@@ -635,7 +661,7 @@ static int mcp23s08_probe(struct spi_device *spi)
 			pullups[addr] = 0;
 	} else {
 		type = spi_get_device_id(spi)->driver_data;
-		pdata = spi->dev.platform_data;
+		pdata = dev_get_platdata(&spi->dev);
 		if (!pdata || !gpio_is_valid(pdata->base)) {
 			dev_dbg(&spi->dev,
 					"invalid or missing platform data\n");
diff --git a/drivers/gpio/gpio-msic.c b/drivers/gpio/gpio-msic.c
index 27ea7b9..d75eaa3 100644
--- a/drivers/gpio/gpio-msic.c
+++ b/drivers/gpio/gpio-msic.c
@@ -259,7 +259,7 @@ static void msic_gpio_irq_handler(unsigned irq, struct irq_desc *desc)
 static int platform_msic_gpio_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
-	struct intel_msic_gpio_pdata *pdata = dev->platform_data;
+	struct intel_msic_gpio_pdata *pdata = dev_get_platdata(dev);
 	struct msic_gpio *mg;
 	int irq = platform_get_irq(pdev, 0);
 	int retval;
diff --git a/drivers/gpio/gpio-msm-v2.c b/drivers/gpio/gpio-msm-v2.c
index c2fa770..f7a0cc4 100644
--- a/drivers/gpio/gpio-msm-v2.c
+++ b/drivers/gpio/gpio-msm-v2.c
@@ -106,7 +106,7 @@ struct msm_gpio_dev {
 	void __iomem *msm_tlmm_base;
 };
 
-struct msm_gpio_dev msm_gpio;
+static struct msm_gpio_dev msm_gpio;
 
 #define GPIO_INTR_CFG_SU(gpio)    (msm_gpio.msm_tlmm_base + 0x0400 + \
 								(0x04 * (gpio)))
diff --git a/drivers/gpio/gpio-mvebu.c b/drivers/gpio/gpio-mvebu.c
index 80ad35e..3c3321f 100644
--- a/drivers/gpio/gpio-mvebu.c
+++ b/drivers/gpio/gpio-mvebu.c
@@ -566,12 +566,6 @@ static int mvebu_gpio_probe(struct platform_device *pdev)
 	else
 		soc_variant = MVEBU_GPIO_SOC_VARIANT_ORION;
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (!res) {
-		dev_err(&pdev->dev, "Cannot get memory resource\n");
-		return -ENODEV;
-	}
-
 	mvchip = devm_kzalloc(&pdev->dev, sizeof(struct mvebu_gpio_chip), GFP_KERNEL);
 	if (!mvchip) {
 		dev_err(&pdev->dev, "Cannot allocate memory\n");
@@ -611,6 +605,7 @@ static int mvebu_gpio_probe(struct platform_device *pdev)
 	mvchip->chip.dbg_show = mvebu_gpio_dbg_show;
 
 	spin_lock_init(&mvchip->lock);
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	mvchip->membase = devm_ioremap_resource(&pdev->dev, res);
 	if (IS_ERR(mvchip->membase))
 		return PTR_ERR(mvchip->membase);
diff --git a/drivers/gpio/gpio-mxc.c b/drivers/gpio/gpio-mxc.c
index 7176743..3307f6d 100644
--- a/drivers/gpio/gpio-mxc.c
+++ b/drivers/gpio/gpio-mxc.c
@@ -19,6 +19,7 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  */
 
+#include <linux/err.h>
 #include <linux/init.h>
 #include <linux/interrupt.h>
 #include <linux/io.h>
@@ -291,6 +292,9 @@ static void mx2_gpio_irq_handler(u32 irq, struct irq_desc *desc)
 {
 	u32 irq_msk, irq_stat;
 	struct mxc_gpio_port *port;
+	struct irq_chip *chip = irq_get_chip(irq);
+
+	chained_irq_enter(chip, desc);
 
 	/* walk through all interrupt status registers */
 	list_for_each_entry(port, &mxc_gpio_ports, node) {
@@ -302,6 +306,7 @@ static void mx2_gpio_irq_handler(u32 irq, struct irq_desc *desc)
 		if (irq_stat)
 			mxc_gpio_irq_handler(port, irq_stat);
 	}
+	chained_irq_exit(chip, desc);
 }
 
 /*
@@ -405,34 +410,19 @@ static int mxc_gpio_probe(struct platform_device *pdev)
 
 	mxc_gpio_get_hw(pdev);
 
-	port = kzalloc(sizeof(struct mxc_gpio_port), GFP_KERNEL);
+	port = devm_kzalloc(&pdev->dev, sizeof(*port), GFP_KERNEL);
 	if (!port)
 		return -ENOMEM;
 
 	iores = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (!iores) {
-		err = -ENODEV;
-		goto out_kfree;
-	}
-
-	if (!request_mem_region(iores->start, resource_size(iores),
-				pdev->name)) {
-		err = -EBUSY;
-		goto out_kfree;
-	}
-
-	port->base = ioremap(iores->start, resource_size(iores));
-	if (!port->base) {
-		err = -ENOMEM;
-		goto out_release_mem;
-	}
+	port->base = devm_ioremap_resource(&pdev->dev, iores);
+	if (IS_ERR(port->base))
+		return PTR_ERR(port->base);
 
 	port->irq_high = platform_get_irq(pdev, 1);
 	port->irq = platform_get_irq(pdev, 0);
-	if (port->irq < 0) {
-		err = -EINVAL;
-		goto out_iounmap;
-	}
+	if (port->irq < 0)
+		return -EINVAL;
 
 	/* disable the interrupt and clear the status */
 	writel(0, port->base + GPIO_IMR);
@@ -462,7 +452,7 @@ static int mxc_gpio_probe(struct platform_device *pdev)
 			 port->base + GPIO_DR, NULL,
 			 port->base + GPIO_GDIR, NULL, 0);
 	if (err)
-		goto out_iounmap;
+		goto out_bgio;
 
 	port->bgc.gc.to_irq = mxc_gpio_to_irq;
 	port->bgc.gc.base = (pdev->id < 0) ? of_alias_get_id(np, "gpio") * 32 :
@@ -498,12 +488,7 @@ out_gpiochip_remove:
 	WARN_ON(gpiochip_remove(&port->bgc.gc) < 0);
 out_bgpio_remove:
 	bgpio_remove(&port->bgc);
-out_iounmap:
-	iounmap(port->base);
-out_release_mem:
-	release_mem_region(iores->start, resource_size(iores));
-out_kfree:
-	kfree(port);
+out_bgio:
 	dev_info(&pdev->dev, "%s failed with errno %d\n", __func__, err);
 	return err;
 }
diff --git a/drivers/gpio/gpio-omap.c b/drivers/gpio/gpio-omap.c
index dfeb3a3..0ff4355 100644
--- a/drivers/gpio/gpio-omap.c
+++ b/drivers/gpio/gpio-omap.c
@@ -1030,7 +1030,7 @@ omap_mpuio_alloc_gc(struct gpio_bank *bank, unsigned int irq_start,
 	ct->chip.irq_set_type = gpio_irq_type;
 
 	if (bank->regs->wkup_en)
-		ct->chip.irq_set_wake = gpio_wake_enable,
+		ct->chip.irq_set_wake = gpio_wake_enable;
 
 	ct->regs.mask = OMAP_MPUIO_GPIO_INT / bank->stride;
 	irq_setup_generic_chip(gc, IRQ_MSK(num), IRQ_GC_INIT_MASK_CACHE,
@@ -1100,7 +1100,7 @@ static int omap_gpio_probe(struct platform_device *pdev)
 
 	match = of_match_device(of_match_ptr(omap_gpio_match), dev);
 
-	pdata = match ? match->data : dev->platform_data;
+	pdata = match ? match->data : dev_get_platdata(dev);
 	if (!pdata)
 		return -EINVAL;
 
diff --git a/drivers/gpio/gpio-palmas.c b/drivers/gpio/gpio-palmas.c
index e3a4e56..8588af0 100644
--- a/drivers/gpio/gpio-palmas.c
+++ b/drivers/gpio/gpio-palmas.c
@@ -43,9 +43,22 @@ static int palmas_gpio_get(struct gpio_chip *gc, unsigned offset)
 	unsigned int val;
 	int ret;
 
-	ret = palmas_read(palmas, PALMAS_GPIO_BASE, PALMAS_GPIO_DATA_IN, &val);
+	ret = palmas_read(palmas, PALMAS_GPIO_BASE, PALMAS_GPIO_DATA_DIR, &val);
 	if (ret < 0) {
-		dev_err(gc->dev, "GPIO_DATA_IN read failed, err = %d\n", ret);
+		dev_err(gc->dev, "GPIO_DATA_DIR read failed, err = %d\n", ret);
+		return ret;
+	}
+
+	if (val & (1 << offset)) {
+		ret = palmas_read(palmas, PALMAS_GPIO_BASE,
+				  PALMAS_GPIO_DATA_OUT, &val);
+	} else {
+		ret = palmas_read(palmas, PALMAS_GPIO_BASE,
+				  PALMAS_GPIO_DATA_IN, &val);
+	}
+	if (ret < 0) {
+		dev_err(gc->dev, "GPIO_DATA_IN/OUT read failed, err = %d\n",
+			ret);
 		return ret;
 	}
 	return !!(val & BIT(offset));
@@ -134,7 +147,7 @@ static int palmas_gpio_probe(struct platform_device *pdev)
 	palmas_gpio->gpio_chip.get	= palmas_gpio_get;
 	palmas_gpio->gpio_chip.dev = &pdev->dev;
 #ifdef CONFIG_OF_GPIO
-	palmas_gpio->gpio_chip.of_node = palmas->dev->of_node;
+	palmas_gpio->gpio_chip.of_node = pdev->dev.of_node;
 #endif
 	palmas_pdata = dev_get_platdata(palmas->dev);
 	if (palmas_pdata && palmas_pdata->gpio_base)
@@ -159,9 +172,19 @@ static int palmas_gpio_remove(struct platform_device *pdev)
 	return gpiochip_remove(&palmas_gpio->gpio_chip);
 }
 
+static struct of_device_id of_palmas_gpio_match[] = {
+	{ .compatible = "ti,palmas-gpio"},
+	{ .compatible = "ti,tps65913-gpio"},
+	{ .compatible = "ti,tps65914-gpio"},
+	{ .compatible = "ti,tps80036-gpio"},
+	{ },
+};
+MODULE_DEVICE_TABLE(of, of_palmas_gpio_match);
+
 static struct platform_driver palmas_gpio_driver = {
 	.driver.name	= "palmas-gpio",
 	.driver.owner	= THIS_MODULE,
+	.driver.of_match_table = of_palmas_gpio_match,
 	.probe		= palmas_gpio_probe,
 	.remove		= palmas_gpio_remove,
 };
diff --git a/drivers/gpio/gpio-pca953x.c b/drivers/gpio/gpio-pca953x.c
index 8804aec..cdd1aa1 100644
--- a/drivers/gpio/gpio-pca953x.c
+++ b/drivers/gpio/gpio-pca953x.c
@@ -308,7 +308,7 @@ static int pca953x_gpio_get_value(struct gpio_chip *gc, unsigned off)
 		return 0;
 	}
 
-	return (reg_val & (1u << off)) ? 1 : 0;
+	return (reg_val & (1u << (off % BANK_SZ))) ? 1 : 0;
 }
 
 static void pca953x_gpio_set_value(struct gpio_chip *gc, unsigned off, int val)
@@ -731,7 +731,7 @@ static int pca953x_probe(struct i2c_client *client,
 	if (chip == NULL)
 		return -ENOMEM;
 
-	pdata = client->dev.platform_data;
+	pdata = dev_get_platdata(&client->dev);
 	if (pdata) {
 		irq_base = pdata->irq_base;
 		chip->gpio_start = pdata->gpio_base;
@@ -785,7 +785,7 @@ static int pca953x_probe(struct i2c_client *client,
 
 static int pca953x_remove(struct i2c_client *client)
 {
-	struct pca953x_platform_data *pdata = client->dev.platform_data;
+	struct pca953x_platform_data *pdata = dev_get_platdata(&client->dev);
 	struct pca953x_chip *chip = i2c_get_clientdata(client);
 	int ret = 0;
 
diff --git a/drivers/gpio/gpio-pcf857x.c b/drivers/gpio/gpio-pcf857x.c
index e8faf53..9e61bb0 100644
--- a/drivers/gpio/gpio-pcf857x.c
+++ b/drivers/gpio/gpio-pcf857x.c
@@ -18,15 +18,15 @@
  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  */
 
-#include <linux/kernel.h>
-#include <linux/slab.h>
 #include <linux/gpio.h>
 #include <linux/i2c.h>
 #include <linux/i2c/pcf857x.h>
 #include <linux/interrupt.h>
 #include <linux/irq.h>
 #include <linux/irqdomain.h>
+#include <linux/kernel.h>
 #include <linux/module.h>
+#include <linux/slab.h>
 #include <linux/spinlock.h>
 #include <linux/workqueue.h>
 
@@ -223,7 +223,6 @@ static void pcf857x_irq_domain_cleanup(struct pcf857x *gpio)
 }
 
 static int pcf857x_irq_domain_init(struct pcf857x *gpio,
-				   struct pcf857x_platform_data *pdata,
 				   struct i2c_client *client)
 {
 	int status;
@@ -262,7 +261,7 @@ static int pcf857x_probe(struct i2c_client *client,
 	struct pcf857x			*gpio;
 	int				status;
 
-	pdata = client->dev.platform_data;
+	pdata = dev_get_platdata(&client->dev);
 	if (!pdata) {
 		dev_dbg(&client->dev, "no platform data\n");
 	}
@@ -286,8 +285,8 @@ static int pcf857x_probe(struct i2c_client *client,
 	gpio->chip.ngpio		= id->driver_data;
 
 	/* enable gpio_to_irq() if platform has settings */
-	if (pdata && client->irq) {
-		status = pcf857x_irq_domain_init(gpio, pdata, client);
+	if (client->irq) {
+		status = pcf857x_irq_domain_init(gpio, client);
 		if (status < 0) {
 			dev_err(&client->dev, "irq_domain init failed\n");
 			goto fail;
@@ -388,7 +387,7 @@ fail:
 	dev_dbg(&client->dev, "probe error %d for '%s'\n",
 			status, client->name);
 
-	if (pdata && client->irq)
+	if (client->irq)
 		pcf857x_irq_domain_cleanup(gpio);
 
 	return status;
@@ -396,7 +395,7 @@ fail:
 
 static int pcf857x_remove(struct i2c_client *client)
 {
-	struct pcf857x_platform_data	*pdata = client->dev.platform_data;
+	struct pcf857x_platform_data	*pdata = dev_get_platdata(&client->dev);
 	struct pcf857x			*gpio = i2c_get_clientdata(client);
 	int				status = 0;
 
@@ -411,7 +410,7 @@ static int pcf857x_remove(struct i2c_client *client)
 		}
 	}
 
-	if (pdata && client->irq)
+	if (client->irq)
 		pcf857x_irq_domain_cleanup(gpio);
 
 	status = gpiochip_remove(&gpio->chip);
diff --git a/drivers/gpio/gpio-pl061.c b/drivers/gpio/gpio-pl061.c
index 6a4bd0d..4274e2e 100644
--- a/drivers/gpio/gpio-pl061.c
+++ b/drivers/gpio/gpio-pl061.c
@@ -259,7 +259,7 @@ static const struct irq_domain_ops pl061_domain_ops = {
 static int pl061_probe(struct amba_device *adev, const struct amba_id *id)
 {
 	struct device *dev = &adev->dev;
-	struct pl061_platform_data *pdata = dev->platform_data;
+	struct pl061_platform_data *pdata = dev_get_platdata(dev);
 	struct pl061_gpio *chip;
 	int ret, irq, i, irq_base;
 
diff --git a/drivers/gpio/gpio-pxa.c b/drivers/gpio/gpio-pxa.c
index df2199d..cc13d1b 100644
--- a/drivers/gpio/gpio-pxa.c
+++ b/drivers/gpio/gpio-pxa.c
@@ -524,8 +524,8 @@ const struct irq_domain_ops pxa_irq_domain_ops = {
 
 static int pxa_gpio_probe_dt(struct platform_device *pdev)
 {
-	int ret, nr_gpios;
-	struct device_node *prev, *next, *np = pdev->dev.of_node;
+	int ret = 0, nr_gpios;
+	struct device_node *np = pdev->dev.of_node;
 	const struct of_device_id *of_id =
 				of_match_device(pxa_gpio_dt_ids, &pdev->dev);
 	const struct pxa_gpio_id *gpio_id;
@@ -537,20 +537,13 @@ static int pxa_gpio_probe_dt(struct platform_device *pdev)
 	gpio_id = of_id->data;
 	gpio_type = gpio_id->type;
 
-	next = of_get_next_child(np, NULL);
-	prev = next;
-	if (!next) {
-		dev_err(&pdev->dev, "Failed to find child gpio node\n");
-		ret = -EINVAL;
-		goto err;
-	}
-	of_node_put(prev);
 	nr_gpios = gpio_id->gpio_nums;
 	pxa_last_gpio = nr_gpios - 1;
 
 	irq_base = irq_alloc_descs(-1, 0, nr_gpios, 0);
 	if (irq_base < 0) {
 		dev_err(&pdev->dev, "Failed to allocate IRQ numbers\n");
+		ret = irq_base;
 		goto err;
 	}
 	domain = irq_domain_add_legacy(np, nr_gpios, irq_base, 0,
diff --git a/drivers/gpio/gpio-rcar.c b/drivers/gpio/gpio-rcar.c
index e8198dd..e3745eb 100644
--- a/drivers/gpio/gpio-rcar.c
+++ b/drivers/gpio/gpio-rcar.c
@@ -285,7 +285,7 @@ static struct irq_domain_ops gpio_rcar_irq_domain_ops = {
 
 static void gpio_rcar_parse_pdata(struct gpio_rcar_priv *p)
 {
-	struct gpio_rcar_config *pdata = p->pdev->dev.platform_data;
+	struct gpio_rcar_config *pdata = dev_get_platdata(&p->pdev->dev);
 	struct device_node *np = p->pdev->dev.of_node;
 	struct of_phandle_args args;
 	int ret;
diff --git a/drivers/gpio/gpio-rdc321x.c b/drivers/gpio/gpio-rdc321x.c
index 368c3c0..88577c3 100644
--- a/drivers/gpio/gpio-rdc321x.c
+++ b/drivers/gpio/gpio-rdc321x.c
@@ -135,7 +135,7 @@ static int rdc321x_gpio_probe(struct platform_device *pdev)
 	struct rdc321x_gpio *rdc321x_gpio_dev;
 	struct rdc321x_gpio_pdata *pdata;
 
-	pdata = pdev->dev.platform_data;
+	pdata = dev_get_platdata(&pdev->dev);
 	if (!pdata) {
 		dev_err(&pdev->dev, "no platform data supplied\n");
 		return -ENODEV;
diff --git a/drivers/gpio/gpio-samsung.c b/drivers/gpio/gpio-samsung.c
index a1392f4..358a21c 100644
--- a/drivers/gpio/gpio-samsung.c
+++ b/drivers/gpio/gpio-samsung.c
@@ -161,28 +161,6 @@ int s3c24xx_gpio_setpull_1down(struct samsung_gpio_chip *chip,
 	return s3c24xx_gpio_setpull_1(chip, off, pull, S3C_GPIO_PULL_DOWN);
 }
 
-static int exynos_gpio_setpull(struct samsung_gpio_chip *chip,
-				unsigned int off, samsung_gpio_pull_t pull)
-{
-	if (pull == S3C_GPIO_PULL_UP)
-		pull = 3;
-
-	return samsung_gpio_setpull_updown(chip, off, pull);
-}
-
-static samsung_gpio_pull_t exynos_gpio_getpull(struct samsung_gpio_chip *chip,
-						unsigned int off)
-{
-	samsung_gpio_pull_t pull;
-
-	pull = samsung_gpio_getpull_updown(chip, off);
-
-	if (pull == 3)
-		pull = S3C_GPIO_PULL_UP;
-
-	return pull;
-}
-
 /*
  * samsung_gpio_setcfg_2bit - Samsung 2bit style GPIO configuration.
  * @chip: The gpio chip that is being configured.
@@ -444,15 +422,6 @@ static struct samsung_gpio_cfg s3c24xx_gpiocfg_banka = {
 };
 #endif
 
-#if defined(CONFIG_ARCH_EXYNOS4) || defined(CONFIG_SOC_EXYNOS5250)
-static struct samsung_gpio_cfg exynos_gpio_cfg = {
-	.set_pull	= exynos_gpio_setpull,
-	.get_pull	= exynos_gpio_getpull,
-	.set_config	= samsung_gpio_setcfg_4bit,
-	.get_config	= samsung_gpio_getcfg_4bit,
-};
-#endif
-
 #if defined(CONFIG_CPU_S5P6440) || defined(CONFIG_CPU_S5P6450)
 static struct samsung_gpio_cfg s5p64x0_gpio_cfg_rbank = {
 	.cfg_eint	= 0x3,
@@ -495,15 +464,6 @@ static struct samsung_gpio_cfg samsung_gpio_cfgs[] = {
 		.set_config	= samsung_gpio_setcfg_2bit,
 		.get_config	= samsung_gpio_getcfg_2bit,
 	},
-	[8] = {
-		.set_pull	= exynos_gpio_setpull,
-		.get_pull	= exynos_gpio_getpull,
-	},
-	[9] = {
-		.cfg_eint	= 0x3,
-		.set_pull	= exynos_gpio_setpull,
-		.get_pull	= exynos_gpio_getpull,
-	}
 };
 
 /*
@@ -2115,833 +2075,6 @@ static struct samsung_gpio_chip s5pv210_gpios_4bit[] = {
 #endif
 };
 
-/*
- * Followings are the gpio banks in EXYNOS SoCs
- *
- * The 'config' member when left to NULL, is initialized to the default
- * structure exynos_gpio_cfg in the init function below.
- *
- * The 'base' member is also initialized in the init function below.
- * Note: The initialization of 'base' member of samsung_gpio_chip structure
- * uses the above macro and depends on the banks being listed in order here.
- */
-
-#ifdef CONFIG_ARCH_EXYNOS4
-static struct samsung_gpio_chip exynos4_gpios_1[] = {
-	{
-		.chip	= {
-			.base	= EXYNOS4_GPA0(0),
-			.ngpio	= EXYNOS4_GPIO_A0_NR,
-			.label	= "GPA0",
-		},
-	}, {
-		.chip	= {
-			.base	= EXYNOS4_GPA1(0),
-			.ngpio	= EXYNOS4_GPIO_A1_NR,
-			.label	= "GPA1",
-		},
-	}, {
-		.chip	= {
-			.base	= EXYNOS4_GPB(0),
-			.ngpio	= EXYNOS4_GPIO_B_NR,
-			.label	= "GPB",
-		},
-	}, {
-		.chip	= {
-			.base	= EXYNOS4_GPC0(0),
-			.ngpio	= EXYNOS4_GPIO_C0_NR,
-			.label	= "GPC0",
-		},
-	}, {
-		.chip	= {
-			.base	= EXYNOS4_GPC1(0),
-			.ngpio	= EXYNOS4_GPIO_C1_NR,
-			.label	= "GPC1",
-		},
-	}, {
-		.chip	= {
-			.base	= EXYNOS4_GPD0(0),
-			.ngpio	= EXYNOS4_GPIO_D0_NR,
-			.label	= "GPD0",
-		},
-	}, {
-		.chip	= {
-			.base	= EXYNOS4_GPD1(0),
-			.ngpio	= EXYNOS4_GPIO_D1_NR,
-			.label	= "GPD1",
-		},
-	}, {
-		.chip	= {
-			.base	= EXYNOS4_GPE0(0),
-			.ngpio	= EXYNOS4_GPIO_E0_NR,
-			.label	= "GPE0",
-		},
-	}, {
-		.chip	= {
-			.base	= EXYNOS4_GPE1(0),
-			.ngpio	= EXYNOS4_GPIO_E1_NR,
-			.label	= "GPE1",
-		},
-	}, {
-		.chip	= {
-			.base	= EXYNOS4_GPE2(0),
-			.ngpio	= EXYNOS4_GPIO_E2_NR,
-			.label	= "GPE2",
-		},
-	}, {
-		.chip	= {
-			.base	= EXYNOS4_GPE3(0),
-			.ngpio	= EXYNOS4_GPIO_E3_NR,
-			.label	= "GPE3",
-		},
-	}, {
-		.chip	= {
-			.base	= EXYNOS4_GPE4(0),
-			.ngpio	= EXYNOS4_GPIO_E4_NR,
-			.label	= "GPE4",
-		},
-	}, {
-		.chip	= {
-			.base	= EXYNOS4_GPF0(0),
-			.ngpio	= EXYNOS4_GPIO_F0_NR,
-			.label	= "GPF0",
-		},
-	}, {
-		.chip	= {
-			.base	= EXYNOS4_GPF1(0),
-			.ngpio	= EXYNOS4_GPIO_F1_NR,
-			.label	= "GPF1",
-		},
-	}, {
-		.chip	= {
-			.base	= EXYNOS4_GPF2(0),
-			.ngpio	= EXYNOS4_GPIO_F2_NR,
-			.label	= "GPF2",
-		},
-	}, {
-		.chip	= {
-			.base	= EXYNOS4_GPF3(0),
-			.ngpio	= EXYNOS4_GPIO_F3_NR,
-			.label	= "GPF3",
-		},
-	},
-};
-#endif
-
-#ifdef CONFIG_ARCH_EXYNOS4
-static struct samsung_gpio_chip exynos4_gpios_2[] = {
-	{
-		.chip	= {
-			.base	= EXYNOS4_GPJ0(0),
-			.ngpio	= EXYNOS4_GPIO_J0_NR,
-			.label	= "GPJ0",
-		},
-	}, {
-		.chip	= {
-			.base	= EXYNOS4_GPJ1(0),
-			.ngpio	= EXYNOS4_GPIO_J1_NR,
-			.label	= "GPJ1",
-		},
-	}, {
-		.chip	= {
-			.base	= EXYNOS4_GPK0(0),
-			.ngpio	= EXYNOS4_GPIO_K0_NR,
-			.label	= "GPK0",
-		},
-	}, {
-		.chip	= {
-			.base	= EXYNOS4_GPK1(0),
-			.ngpio	= EXYNOS4_GPIO_K1_NR,
-			.label	= "GPK1",
-		},
-	}, {
-		.chip	= {
-			.base	= EXYNOS4_GPK2(0),
-			.ngpio	= EXYNOS4_GPIO_K2_NR,
-			.label	= "GPK2",
-		},
-	}, {
-		.chip	= {
-			.base	= EXYNOS4_GPK3(0),
-			.ngpio	= EXYNOS4_GPIO_K3_NR,
-			.label	= "GPK3",
-		},
-	}, {
-		.chip	= {
-			.base	= EXYNOS4_GPL0(0),
-			.ngpio	= EXYNOS4_GPIO_L0_NR,
-			.label	= "GPL0",
-		},
-	}, {
-		.chip	= {
-			.base	= EXYNOS4_GPL1(0),
-			.ngpio	= EXYNOS4_GPIO_L1_NR,
-			.label	= "GPL1",
-		},
-	}, {
-		.chip	= {
-			.base	= EXYNOS4_GPL2(0),
-			.ngpio	= EXYNOS4_GPIO_L2_NR,
-			.label	= "GPL2",
-		},
-	}, {
-		.config	= &samsung_gpio_cfgs[8],
-		.chip	= {
-			.base	= EXYNOS4_GPY0(0),
-			.ngpio	= EXYNOS4_GPIO_Y0_NR,
-			.label	= "GPY0",
-		},
-	}, {
-		.config	= &samsung_gpio_cfgs[8],
-		.chip	= {
-			.base	= EXYNOS4_GPY1(0),
-			.ngpio	= EXYNOS4_GPIO_Y1_NR,
-			.label	= "GPY1",
-		},
-	}, {
-		.config	= &samsung_gpio_cfgs[8],
-		.chip	= {
-			.base	= EXYNOS4_GPY2(0),
-			.ngpio	= EXYNOS4_GPIO_Y2_NR,
-			.label	= "GPY2",
-		},
-	}, {
-		.config	= &samsung_gpio_cfgs[8],
-		.chip	= {
-			.base	= EXYNOS4_GPY3(0),
-			.ngpio	= EXYNOS4_GPIO_Y3_NR,
-			.label	= "GPY3",
-		},
-	}, {
-		.config	= &samsung_gpio_cfgs[8],
-		.chip	= {
-			.base	= EXYNOS4_GPY4(0),
-			.ngpio	= EXYNOS4_GPIO_Y4_NR,
-			.label	= "GPY4",
-		},
-	}, {
-		.config	= &samsung_gpio_cfgs[8],
-		.chip	= {
-			.base	= EXYNOS4_GPY5(0),
-			.ngpio	= EXYNOS4_GPIO_Y5_NR,
-			.label	= "GPY5",
-		},
-	}, {
-		.config	= &samsung_gpio_cfgs[8],
-		.chip	= {
-			.base	= EXYNOS4_GPY6(0),
-			.ngpio	= EXYNOS4_GPIO_Y6_NR,
-			.label	= "GPY6",
-		},
-	}, {
-		.config	= &samsung_gpio_cfgs[9],
-		.irq_base = IRQ_EINT(0),
-		.chip	= {
-			.base	= EXYNOS4_GPX0(0),
-			.ngpio	= EXYNOS4_GPIO_X0_NR,
-			.label	= "GPX0",
-			.to_irq	= samsung_gpiolib_to_irq,
-		},
-	}, {
-		.config	= &samsung_gpio_cfgs[9],
-		.irq_base = IRQ_EINT(8),
-		.chip	= {
-			.base	= EXYNOS4_GPX1(0),
-			.ngpio	= EXYNOS4_GPIO_X1_NR,
-			.label	= "GPX1",
-			.to_irq	= samsung_gpiolib_to_irq,
-		},
-	}, {
-		.config	= &samsung_gpio_cfgs[9],
-		.irq_base = IRQ_EINT(16),
-		.chip	= {
-			.base	= EXYNOS4_GPX2(0),
-			.ngpio	= EXYNOS4_GPIO_X2_NR,
-			.label	= "GPX2",
-			.to_irq	= samsung_gpiolib_to_irq,
-		},
-	}, {
-		.config	= &samsung_gpio_cfgs[9],
-		.irq_base = IRQ_EINT(24),
-		.chip	= {
-			.base	= EXYNOS4_GPX3(0),
-			.ngpio	= EXYNOS4_GPIO_X3_NR,
-			.label	= "GPX3",
-			.to_irq	= samsung_gpiolib_to_irq,
-		},
-	},
-};
-#endif
-
-#ifdef CONFIG_ARCH_EXYNOS4
-static struct samsung_gpio_chip exynos4_gpios_3[] = {
-	{
-		.chip	= {
-			.base	= EXYNOS4_GPZ(0),
-			.ngpio	= EXYNOS4_GPIO_Z_NR,
-			.label	= "GPZ",
-		},
-	},
-};
-#endif
-
-#ifdef CONFIG_SOC_EXYNOS5250
-static struct samsung_gpio_chip exynos5_gpios_1[] = {
-	{
-		.chip	= {
-			.base	= EXYNOS5_GPA0(0),
-			.ngpio	= EXYNOS5_GPIO_A0_NR,
-			.label	= "GPA0",
-		},
-	}, {
-		.chip	= {
-			.base	= EXYNOS5_GPA1(0),
-			.ngpio	= EXYNOS5_GPIO_A1_NR,
-			.label	= "GPA1",
-		},
-	}, {
-		.chip	= {
-			.base	= EXYNOS5_GPA2(0),
-			.ngpio	= EXYNOS5_GPIO_A2_NR,
-			.label	= "GPA2",
-		},
-	}, {
-		.chip	= {
-			.base	= EXYNOS5_GPB0(0),
-			.ngpio	= EXYNOS5_GPIO_B0_NR,
-			.label	= "GPB0",
-		},
-	}, {
-		.chip	= {
-			.base	= EXYNOS5_GPB1(0),
-			.ngpio	= EXYNOS5_GPIO_B1_NR,
-			.label	= "GPB1",
-		},
-	}, {
-		.chip	= {
-			.base	= EXYNOS5_GPB2(0),
-			.ngpio	= EXYNOS5_GPIO_B2_NR,
-			.label	= "GPB2",
-		},
-	}, {
-		.chip	= {
-			.base	= EXYNOS5_GPB3(0),
-			.ngpio	= EXYNOS5_GPIO_B3_NR,
-			.label	= "GPB3",
-		},
-	}, {
-		.chip	= {
-			.base	= EXYNOS5_GPC0(0),
-			.ngpio	= EXYNOS5_GPIO_C0_NR,
-			.label	= "GPC0",
-		},
-	}, {
-		.chip	= {
-			.base	= EXYNOS5_GPC1(0),
-			.ngpio	= EXYNOS5_GPIO_C1_NR,
-			.label	= "GPC1",
-		},
-	}, {
-		.chip	= {
-			.base	= EXYNOS5_GPC2(0),
-			.ngpio	= EXYNOS5_GPIO_C2_NR,
-			.label	= "GPC2",
-		},
-	}, {
-		.chip	= {
-			.base	= EXYNOS5_GPC3(0),
-			.ngpio	= EXYNOS5_GPIO_C3_NR,
-			.label	= "GPC3",
-		},
-	}, {
-		.chip	= {
-			.base	= EXYNOS5_GPD0(0),
-			.ngpio	= EXYNOS5_GPIO_D0_NR,
-			.label	= "GPD0",
-		},
-	}, {
-		.chip	= {
-			.base	= EXYNOS5_GPD1(0),
-			.ngpio	= EXYNOS5_GPIO_D1_NR,
-			.label	= "GPD1",
-		},
-	}, {
-		.chip	= {
-			.base	= EXYNOS5_GPY0(0),
-			.ngpio	= EXYNOS5_GPIO_Y0_NR,
-			.label	= "GPY0",
-		},
-	}, {
-		.chip	= {
-			.base	= EXYNOS5_GPY1(0),
-			.ngpio	= EXYNOS5_GPIO_Y1_NR,
-			.label	= "GPY1",
-		},
-	}, {
-		.chip	= {
-			.base	= EXYNOS5_GPY2(0),
-			.ngpio	= EXYNOS5_GPIO_Y2_NR,
-			.label	= "GPY2",
-		},
-	}, {
-		.chip	= {
-			.base	= EXYNOS5_GPY3(0),
-			.ngpio	= EXYNOS5_GPIO_Y3_NR,
-			.label	= "GPY3",
-		},
-	}, {
-		.chip	= {
-			.base	= EXYNOS5_GPY4(0),
-			.ngpio	= EXYNOS5_GPIO_Y4_NR,
-			.label	= "GPY4",
-		},
-	}, {
-		.chip	= {
-			.base	= EXYNOS5_GPY5(0),
-			.ngpio	= EXYNOS5_GPIO_Y5_NR,
-			.label	= "GPY5",
-		},
-	}, {
-		.chip	= {
-			.base	= EXYNOS5_GPY6(0),
-			.ngpio	= EXYNOS5_GPIO_Y6_NR,
-			.label	= "GPY6",
-		},
-	}, {
-		.chip	= {
-			.base	= EXYNOS5_GPC4(0),
-			.ngpio	= EXYNOS5_GPIO_C4_NR,
-			.label	= "GPC4",
-		},
-	}, {
-		.config	= &samsung_gpio_cfgs[9],
-		.irq_base = IRQ_EINT(0),
-		.chip	= {
-			.base	= EXYNOS5_GPX0(0),
-			.ngpio	= EXYNOS5_GPIO_X0_NR,
-			.label	= "GPX0",
-			.to_irq	= samsung_gpiolib_to_irq,
-		},
-	}, {
-		.config	= &samsung_gpio_cfgs[9],
-		.irq_base = IRQ_EINT(8),
-		.chip	= {
-			.base	= EXYNOS5_GPX1(0),
-			.ngpio	= EXYNOS5_GPIO_X1_NR,
-			.label	= "GPX1",
-			.to_irq	= samsung_gpiolib_to_irq,
-		},
-	}, {
-		.config	= &samsung_gpio_cfgs[9],
-		.irq_base = IRQ_EINT(16),
-		.chip	= {
-			.base	= EXYNOS5_GPX2(0),
-			.ngpio	= EXYNOS5_GPIO_X2_NR,
-			.label	= "GPX2",
-			.to_irq	= samsung_gpiolib_to_irq,
-		},
-	}, {
-		.config	= &samsung_gpio_cfgs[9],
-		.irq_base = IRQ_EINT(24),
-		.chip	= {
-			.base	= EXYNOS5_GPX3(0),
-			.ngpio	= EXYNOS5_GPIO_X3_NR,
-			.label	= "GPX3",
-			.to_irq	= samsung_gpiolib_to_irq,
-		},
-	},
-};
-#endif
-
-#ifdef CONFIG_SOC_EXYNOS5250
-static struct samsung_gpio_chip exynos5_gpios_2[] = {
-	{
-		.chip	= {
-			.base	= EXYNOS5_GPE0(0),
-			.ngpio	= EXYNOS5_GPIO_E0_NR,
-			.label	= "GPE0",
-		},
-	}, {
-		.chip	= {
-			.base	= EXYNOS5_GPE1(0),
-			.ngpio	= EXYNOS5_GPIO_E1_NR,
-			.label	= "GPE1",
-		},
-	}, {
-		.chip	= {
-			.base	= EXYNOS5_GPF0(0),
-			.ngpio	= EXYNOS5_GPIO_F0_NR,
-			.label	= "GPF0",
-		},
-	}, {
-		.chip	= {
-			.base	= EXYNOS5_GPF1(0),
-			.ngpio	= EXYNOS5_GPIO_F1_NR,
-			.label	= "GPF1",
-		},
-	}, {
-		.chip	= {
-			.base	= EXYNOS5_GPG0(0),
-			.ngpio	= EXYNOS5_GPIO_G0_NR,
-			.label	= "GPG0",
-		},
-	}, {
-		.chip	= {
-			.base	= EXYNOS5_GPG1(0),
-			.ngpio	= EXYNOS5_GPIO_G1_NR,
-			.label	= "GPG1",
-		},
-	}, {
-		.chip	= {
-			.base	= EXYNOS5_GPG2(0),
-			.ngpio	= EXYNOS5_GPIO_G2_NR,
-			.label	= "GPG2",
-		},
-	}, {
-		.chip	= {
-			.base	= EXYNOS5_GPH0(0),
-			.ngpio	= EXYNOS5_GPIO_H0_NR,
-			.label	= "GPH0",
-		},
-	}, {
-		.chip	= {
-			.base	= EXYNOS5_GPH1(0),
-			.ngpio	= EXYNOS5_GPIO_H1_NR,
-			.label	= "GPH1",
-
-		},
-	},
-};
-#endif
-
-#ifdef CONFIG_SOC_EXYNOS5250
-static struct samsung_gpio_chip exynos5_gpios_3[] = {
-	{
-		.chip	= {
-			.base	= EXYNOS5_GPV0(0),
-			.ngpio	= EXYNOS5_GPIO_V0_NR,
-			.label	= "GPV0",
-		},
-	}, {
-		.chip	= {
-			.base	= EXYNOS5_GPV1(0),
-			.ngpio	= EXYNOS5_GPIO_V1_NR,
-			.label	= "GPV1",
-		},
-	}, {
-		.chip	= {
-			.base	= EXYNOS5_GPV2(0),
-			.ngpio	= EXYNOS5_GPIO_V2_NR,
-			.label	= "GPV2",
-		},
-	}, {
-		.chip	= {
-			.base	= EXYNOS5_GPV3(0),
-			.ngpio	= EXYNOS5_GPIO_V3_NR,
-			.label	= "GPV3",
-		},
-	}, {
-		.chip	= {
-			.base	= EXYNOS5_GPV4(0),
-			.ngpio	= EXYNOS5_GPIO_V4_NR,
-			.label	= "GPV4",
-		},
-	},
-};
-#endif
-
-#ifdef CONFIG_SOC_EXYNOS5250
-static struct samsung_gpio_chip exynos5_gpios_4[] = {
-	{
-		.chip	= {
-			.base	= EXYNOS5_GPZ(0),
-			.ngpio	= EXYNOS5_GPIO_Z_NR,
-			.label	= "GPZ",
-		},
-	},
-};
-#endif
-
-
-#if defined(CONFIG_ARCH_EXYNOS) && defined(CONFIG_OF)
-static int exynos_gpio_xlate(struct gpio_chip *gc,
-			const struct of_phandle_args *gpiospec, u32 *flags)
-{
-	unsigned int pin;
-
-	if (WARN_ON(gc->of_gpio_n_cells < 4))
-		return -EINVAL;
-
-	if (WARN_ON(gpiospec->args_count < gc->of_gpio_n_cells))
-		return -EINVAL;
-
-	if (gpiospec->args[0] > gc->ngpio)
-		return -EINVAL;
-
-	pin = gc->base + gpiospec->args[0];
-
-	if (s3c_gpio_cfgpin(pin, S3C_GPIO_SFN(gpiospec->args[1])))
-		pr_warn("gpio_xlate: failed to set pin function\n");
-	if (s3c_gpio_setpull(pin, gpiospec->args[2] & 0xffff))
-		pr_warn("gpio_xlate: failed to set pin pull up/down\n");
-	if (s5p_gpio_set_drvstr(pin, gpiospec->args[3]))
-		pr_warn("gpio_xlate: failed to set pin drive strength\n");
-
-	if (flags)
-		*flags = gpiospec->args[2] >> 16;
-
-	return gpiospec->args[0];
-}
-
-static const struct of_device_id exynos_gpio_dt_match[] __initdata = {
-	{ .compatible = "samsung,exynos4-gpio", },
-	{}
-};
-
-static __init void exynos_gpiolib_attach_ofnode(struct samsung_gpio_chip *chip,
-						u64 base, u64 offset)
-{
-	struct gpio_chip *gc =  &chip->chip;
-	u64 address;
-
-	if (!of_have_populated_dt())
-		return;
-
-	address = chip->base ? base + ((u32)chip->base & 0xfff) : base + offset;
-	gc->of_node = of_find_matching_node_by_address(NULL,
-			exynos_gpio_dt_match, address);
-	if (!gc->of_node) {
-		pr_info("gpio: device tree node not found for gpio controller"
-			" with base address %08llx\n", address);
-		return;
-	}
-	gc->of_gpio_n_cells = 4;
-	gc->of_xlate = exynos_gpio_xlate;
-}
-#elif defined(CONFIG_ARCH_EXYNOS)
-static __init void exynos_gpiolib_attach_ofnode(struct samsung_gpio_chip *chip,
-						u64 base, u64 offset)
-{
-	return;
-}
-#endif /* defined(CONFIG_ARCH_EXYNOS) && defined(CONFIG_OF) */
-
-static __init void exynos4_gpiolib_init(void)
-{
-#ifdef CONFIG_CPU_EXYNOS4210
-	struct samsung_gpio_chip *chip;
-	int i, nr_chips;
-	void __iomem *gpio_base1, *gpio_base2, *gpio_base3;
-	int group = 0;
-	void __iomem *gpx_base;
-
-	/* gpio part1 */
-	gpio_base1 = ioremap(EXYNOS4_PA_GPIO1, SZ_4K);
-	if (gpio_base1 == NULL) {
-		pr_err("unable to ioremap for gpio_base1\n");
-		goto err_ioremap1;
-	}
-
-	chip = exynos4_gpios_1;
-	nr_chips = ARRAY_SIZE(exynos4_gpios_1);
-
-	for (i = 0; i < nr_chips; i++, chip++) {
-		if (!chip->config) {
-			chip->config = &exynos_gpio_cfg;
-			chip->group = group++;
-		}
-		exynos_gpiolib_attach_ofnode(chip,
-				EXYNOS4_PA_GPIO1, i * 0x20);
-	}
-	samsung_gpiolib_add_4bit_chips(exynos4_gpios_1,
-				       nr_chips, gpio_base1);
-
-	/* gpio part2 */
-	gpio_base2 = ioremap(EXYNOS4_PA_GPIO2, SZ_4K);
-	if (gpio_base2 == NULL) {
-		pr_err("unable to ioremap for gpio_base2\n");
-		goto err_ioremap2;
-	}
-
-	/* need to set base address for gpx */
-	chip = &exynos4_gpios_2[16];
-	gpx_base = gpio_base2 + 0xC00;
-	for (i = 0; i < 4; i++, chip++, gpx_base += 0x20)
-		chip->base = gpx_base;
-
-	chip = exynos4_gpios_2;
-	nr_chips = ARRAY_SIZE(exynos4_gpios_2);
-
-	for (i = 0; i < nr_chips; i++, chip++) {
-		if (!chip->config) {
-			chip->config = &exynos_gpio_cfg;
-			chip->group = group++;
-		}
-		exynos_gpiolib_attach_ofnode(chip,
-				EXYNOS4_PA_GPIO2, i * 0x20);
-	}
-	samsung_gpiolib_add_4bit_chips(exynos4_gpios_2,
-				       nr_chips, gpio_base2);
-
-	/* gpio part3 */
-	gpio_base3 = ioremap(EXYNOS4_PA_GPIO3, SZ_256);
-	if (gpio_base3 == NULL) {
-		pr_err("unable to ioremap for gpio_base3\n");
-		goto err_ioremap3;
-	}
-
-	chip = exynos4_gpios_3;
-	nr_chips = ARRAY_SIZE(exynos4_gpios_3);
-
-	for (i = 0; i < nr_chips; i++, chip++) {
-		if (!chip->config) {
-			chip->config = &exynos_gpio_cfg;
-			chip->group = group++;
-		}
-		exynos_gpiolib_attach_ofnode(chip,
-				EXYNOS4_PA_GPIO3, i * 0x20);
-	}
-	samsung_gpiolib_add_4bit_chips(exynos4_gpios_3,
-				       nr_chips, gpio_base3);
-
-#if defined(CONFIG_CPU_EXYNOS4210) && defined(CONFIG_S5P_GPIO_INT)
-	s5p_register_gpioint_bank(IRQ_GPIO_XA, 0, IRQ_GPIO1_NR_GROUPS);
-	s5p_register_gpioint_bank(IRQ_GPIO_XB, IRQ_GPIO1_NR_GROUPS, IRQ_GPIO2_NR_GROUPS);
-#endif
-
-	return;
-
-err_ioremap3:
-	iounmap(gpio_base2);
-err_ioremap2:
-	iounmap(gpio_base1);
-err_ioremap1:
-	return;
-#endif	/* CONFIG_CPU_EXYNOS4210 */
-}
-
-static __init void exynos5_gpiolib_init(void)
-{
-#ifdef CONFIG_SOC_EXYNOS5250
-	struct samsung_gpio_chip *chip;
-	int i, nr_chips;
-	void __iomem *gpio_base1, *gpio_base2, *gpio_base3, *gpio_base4;
-	int group = 0;
-	void __iomem *gpx_base;
-
-	/* gpio part1 */
-	gpio_base1 = ioremap(EXYNOS5_PA_GPIO1, SZ_4K);
-	if (gpio_base1 == NULL) {
-		pr_err("unable to ioremap for gpio_base1\n");
-		goto err_ioremap1;
-	}
-
-	/* need to set base address for gpc4 */
-	exynos5_gpios_1[20].base = gpio_base1 + 0x2E0;
-
-	/* need to set base address for gpx */
-	chip = &exynos5_gpios_1[21];
-	gpx_base = gpio_base1 + 0xC00;
-	for (i = 0; i < 4; i++, chip++, gpx_base += 0x20)
-		chip->base = gpx_base;
-
-	chip = exynos5_gpios_1;
-	nr_chips = ARRAY_SIZE(exynos5_gpios_1);
-
-	for (i = 0; i < nr_chips; i++, chip++) {
-		if (!chip->config) {
-			chip->config = &exynos_gpio_cfg;
-			chip->group = group++;
-		}
-		exynos_gpiolib_attach_ofnode(chip,
-				EXYNOS5_PA_GPIO1, i * 0x20);
-	}
-	samsung_gpiolib_add_4bit_chips(exynos5_gpios_1,
-				       nr_chips, gpio_base1);
-
-	/* gpio part2 */
-	gpio_base2 = ioremap(EXYNOS5_PA_GPIO2, SZ_4K);
-	if (gpio_base2 == NULL) {
-		pr_err("unable to ioremap for gpio_base2\n");
-		goto err_ioremap2;
-	}
-
-	chip = exynos5_gpios_2;
-	nr_chips = ARRAY_SIZE(exynos5_gpios_2);
-
-	for (i = 0; i < nr_chips; i++, chip++) {
-		if (!chip->config) {
-			chip->config = &exynos_gpio_cfg;
-			chip->group = group++;
-		}
-		exynos_gpiolib_attach_ofnode(chip,
-				EXYNOS5_PA_GPIO2, i * 0x20);
-	}
-	samsung_gpiolib_add_4bit_chips(exynos5_gpios_2,
-				       nr_chips, gpio_base2);
-
-	/* gpio part3 */
-	gpio_base3 = ioremap(EXYNOS5_PA_GPIO3, SZ_4K);
-	if (gpio_base3 == NULL) {
-		pr_err("unable to ioremap for gpio_base3\n");
-		goto err_ioremap3;
-	}
-
-	/* need to set base address for gpv */
-	exynos5_gpios_3[0].base = gpio_base3;
-	exynos5_gpios_3[1].base = gpio_base3 + 0x20;
-	exynos5_gpios_3[2].base = gpio_base3 + 0x60;
-	exynos5_gpios_3[3].base = gpio_base3 + 0x80;
-	exynos5_gpios_3[4].base = gpio_base3 + 0xC0;
-
-	chip = exynos5_gpios_3;
-	nr_chips = ARRAY_SIZE(exynos5_gpios_3);
-
-	for (i = 0; i < nr_chips; i++, chip++) {
-		if (!chip->config) {
-			chip->config = &exynos_gpio_cfg;
-			chip->group = group++;
-		}
-		exynos_gpiolib_attach_ofnode(chip,
-				EXYNOS5_PA_GPIO3, i * 0x20);
-	}
-	samsung_gpiolib_add_4bit_chips(exynos5_gpios_3,
-				       nr_chips, gpio_base3);
-
-	/* gpio part4 */
-	gpio_base4 = ioremap(EXYNOS5_PA_GPIO4, SZ_4K);
-	if (gpio_base4 == NULL) {
-		pr_err("unable to ioremap for gpio_base4\n");
-		goto err_ioremap4;
-	}
-
-	chip = exynos5_gpios_4;
-	nr_chips = ARRAY_SIZE(exynos5_gpios_4);
-
-	for (i = 0; i < nr_chips; i++, chip++) {
-		if (!chip->config) {
-			chip->config = &exynos_gpio_cfg;
-			chip->group = group++;
-		}
-		exynos_gpiolib_attach_ofnode(chip,
-				EXYNOS5_PA_GPIO4, i * 0x20);
-	}
-	samsung_gpiolib_add_4bit_chips(exynos5_gpios_4,
-				       nr_chips, gpio_base4);
-	return;
-
-err_ioremap4:
-	iounmap(gpio_base3);
-err_ioremap3:
-	iounmap(gpio_base2);
-err_ioremap2:
-	iounmap(gpio_base1);
-err_ioremap1:
-	return;
-
-#endif	/* CONFIG_SOC_EXYNOS5250 */
-}
-
 /* TODO: cleanup soc_is_* */
 static __init int samsung_gpiolib_init(void)
 {
@@ -3040,10 +2173,6 @@ static __init int samsung_gpiolib_init(void)
 #if defined(CONFIG_CPU_S5PV210) && defined(CONFIG_S5P_GPIO_INT)
 		s5p_register_gpioint_bank(IRQ_GPIOINT, 0, S5P_GPIOINT_GROUP_MAXNR);
 #endif
-	} else if (soc_is_exynos4210()) {
-		exynos4_gpiolib_init();
-	} else if (soc_is_exynos5250()) {
-		exynos5_gpiolib_init();
 	} else {
 		WARN(1, "Unknown SoC in gpio-samsung, no GPIOs added\n");
 		return -ENODEV;
diff --git a/drivers/gpio/gpio-spear-spics.c b/drivers/gpio/gpio-spear-spics.c
index 7a4bf7c..e9a0415 100644
--- a/drivers/gpio/gpio-spear-spics.c
+++ b/drivers/gpio/gpio-spear-spics.c
@@ -128,18 +128,13 @@ static int spics_gpio_probe(struct platform_device *pdev)
 	struct resource *res;
 	int ret;
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (!res) {
-		dev_err(&pdev->dev, "invalid IORESOURCE_MEM\n");
-		return -EBUSY;
-	}
-
 	spics = devm_kzalloc(&pdev->dev, sizeof(*spics), GFP_KERNEL);
 	if (!spics) {
 		dev_err(&pdev->dev, "memory allocation fail\n");
 		return -ENOMEM;
 	}
 
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	spics->base = devm_ioremap_resource(&pdev->dev, res);
 	if (IS_ERR(spics->base))
 		return PTR_ERR(spics->base);
diff --git a/drivers/gpio/gpio-sta2x11.c b/drivers/gpio/gpio-sta2x11.c
index f43ab6a..f2fb12c 100644
--- a/drivers/gpio/gpio-sta2x11.c
+++ b/drivers/gpio/gpio-sta2x11.c
@@ -361,7 +361,7 @@ static int gsta_probe(struct platform_device *dev)
 	struct gsta_gpio *chip;
 	struct resource *res;
 
-	pdev = *(struct pci_dev **)(dev->dev.platform_data);
+	pdev = *(struct pci_dev **)dev_get_platdata(&dev->dev);
 	gpio_pdata = dev_get_platdata(&pdev->dev);
 
 	if (gpio_pdata == NULL)
diff --git a/drivers/gpio/gpio-sx150x.c b/drivers/gpio/gpio-sx150x.c
index f371732..d2983e9 100644
--- a/drivers/gpio/gpio-sx150x.c
+++ b/drivers/gpio/gpio-sx150x.c
@@ -583,7 +583,7 @@ static int sx150x_probe(struct i2c_client *client,
 	struct sx150x_chip *chip;
 	int rc;
 
-	pdata = client->dev.platform_data;
+	pdata = dev_get_platdata(&client->dev);
 	if (!pdata)
 		return -EINVAL;
 
diff --git a/drivers/gpio/gpio-timberdale.c b/drivers/gpio/gpio-timberdale.c
index 4c65f88..7a0e956 100644
--- a/drivers/gpio/gpio-timberdale.c
+++ b/drivers/gpio/gpio-timberdale.c
@@ -227,7 +227,7 @@ static int timbgpio_probe(struct platform_device *pdev)
 	struct gpio_chip *gc;
 	struct timbgpio *tgpio;
 	struct resource *iomem;
-	struct timbgpio_platform_data *pdata = pdev->dev.platform_data;
+	struct timbgpio_platform_data *pdata = dev_get_platdata(&pdev->dev);
 	int irq = platform_get_irq(pdev, 0);
 
 	if (!pdata || pdata->nr_pins > 32) {
@@ -318,7 +318,7 @@ err_mem:
 static int timbgpio_remove(struct platform_device *pdev)
 {
 	int err;
-	struct timbgpio_platform_data *pdata = pdev->dev.platform_data;
+	struct timbgpio_platform_data *pdata = dev_get_platdata(&pdev->dev);
 	struct timbgpio *tgpio = platform_get_drvdata(pdev);
 	struct resource *iomem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	int irq = platform_get_irq(pdev, 0);
diff --git a/drivers/gpio/gpio-tps65912.c b/drivers/gpio/gpio-tps65912.c
index 30a5844..276a422 100644
--- a/drivers/gpio/gpio-tps65912.c
+++ b/drivers/gpio/gpio-tps65912.c
@@ -87,7 +87,7 @@ static struct gpio_chip template_chip = {
 static int tps65912_gpio_probe(struct platform_device *pdev)
 {
 	struct tps65912 *tps65912 = dev_get_drvdata(pdev->dev.parent);
-	struct tps65912_board *pdata = tps65912->dev->platform_data;
+	struct tps65912_board *pdata = dev_get_platdata(tps65912->dev);
 	struct tps65912_gpio_data *tps65912_gpio;
 	int ret;
 
diff --git a/drivers/gpio/gpio-ts5500.c b/drivers/gpio/gpio-ts5500.c
index cc53cab..3df3ebd 100644
--- a/drivers/gpio/gpio-ts5500.c
+++ b/drivers/gpio/gpio-ts5500.c
@@ -322,7 +322,7 @@ static void ts5500_disable_irq(struct ts5500_priv *priv)
 static int ts5500_dio_probe(struct platform_device *pdev)
 {
 	enum ts5500_blocks block = platform_get_device_id(pdev)->driver_data;
-	struct ts5500_dio_platform_data *pdata = pdev->dev.platform_data;
+	struct ts5500_dio_platform_data *pdata = dev_get_platdata(&pdev->dev);
 	struct device *dev = &pdev->dev;
 	const char *name = dev_name(dev);
 	struct ts5500_priv *priv;
diff --git a/drivers/gpio/gpio-twl4030.c b/drivers/gpio/gpio-twl4030.c
index 4d330e3..d8e4f6e 100644
--- a/drivers/gpio/gpio-twl4030.c
+++ b/drivers/gpio/gpio-twl4030.c
@@ -256,7 +256,7 @@ static int twl_request(struct gpio_chip *chip, unsigned offset)
 		/* optionally have the first two GPIOs switch vMMC1
 		 * and vMMC2 power supplies based on card presence.
 		 */
-		pdata = chip->dev->platform_data;
+		pdata = dev_get_platdata(chip->dev);
 		if (pdata)
 			value |= pdata->mmc_cd & 0x03;
 
@@ -460,7 +460,7 @@ static struct twl4030_gpio_platform_data *of_gpio_twl4030(struct device *dev)
 
 static int gpio_twl4030_probe(struct platform_device *pdev)
 {
-	struct twl4030_gpio_platform_data *pdata = pdev->dev.platform_data;
+	struct twl4030_gpio_platform_data *pdata = dev_get_platdata(&pdev->dev);
 	struct device_node *node = pdev->dev.of_node;
 	struct gpio_twl4030_priv *priv;
 	int ret, irq_base;
@@ -556,7 +556,7 @@ out:
 /* Cannot use as gpio_twl4030_probe() calls us */
 static int gpio_twl4030_remove(struct platform_device *pdev)
 {
-	struct twl4030_gpio_platform_data *pdata = pdev->dev.platform_data;
+	struct twl4030_gpio_platform_data *pdata = dev_get_platdata(&pdev->dev);
 	struct gpio_twl4030_priv *priv = platform_get_drvdata(pdev);
 	int status;
 
diff --git a/drivers/gpio/gpio-twl6040.c b/drivers/gpio/gpio-twl6040.c
index 0be82c6..d420d30 100644
--- a/drivers/gpio/gpio-twl6040.c
+++ b/drivers/gpio/gpio-twl6040.c
@@ -84,15 +84,11 @@ static struct gpio_chip twl6040gpo_chip = {
 
 static int gpo_twl6040_probe(struct platform_device *pdev)
 {
-	struct twl6040_gpo_data *pdata = pdev->dev.platform_data;
 	struct device *twl6040_core_dev = pdev->dev.parent;
 	struct twl6040 *twl6040 = dev_get_drvdata(twl6040_core_dev);
 	int ret;
 
-	if (pdata)
-		twl6040gpo_chip.base = pdata->gpio_base;
-	else
-		twl6040gpo_chip.base = -1;
+	twl6040gpo_chip.base = -1;
 
 	if (twl6040_get_revid(twl6040) < TWL6041_REV_ES2_0)
 		twl6040gpo_chip.ngpio = 3; /* twl6040 have 3 GPO */
diff --git a/drivers/gpio/gpio-tz1090-pdc.c b/drivers/gpio/gpio-tz1090-pdc.c
new file mode 100644
index 0000000..f512da2
--- /dev/null
+++ b/drivers/gpio/gpio-tz1090-pdc.c
@@ -0,0 +1,243 @@
+/*
+ * Toumaz Xenif TZ1090 PDC GPIO handling.
+ *
+ * Copyright (C) 2012-2013 Imagination Technologies Ltd.
+ *
+ * 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.
+ */
+
+#include <linux/bitops.h>
+#include <linux/gpio.h>
+#include <linux/io.h>
+#include <linux/module.h>
+#include <linux/of_irq.h>
+#include <linux/pinctrl/consumer.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <linux/syscore_ops.h>
+#include <asm/global_lock.h>
+
+/* Register offsets from SOC_GPIO_CONTROL0 */
+#define REG_SOC_GPIO_CONTROL0	0x00
+#define REG_SOC_GPIO_CONTROL1	0x04
+#define REG_SOC_GPIO_CONTROL2	0x08
+#define REG_SOC_GPIO_CONTROL3	0x0c
+#define REG_SOC_GPIO_STATUS	0x80
+
+/* PDC GPIOs go after normal GPIOs */
+#define GPIO_PDC_BASE		90
+#define GPIO_PDC_NGPIO		7
+
+/* Out of PDC gpios, only syswakes have irqs */
+#define GPIO_PDC_IRQ_FIRST	2
+#define GPIO_PDC_NIRQ		3
+
+/**
+ * struct tz1090_pdc_gpio - GPIO bank private data
+ * @chip:	Generic GPIO chip for GPIO bank
+ * @reg:	Base of registers, offset for this GPIO bank
+ * @irq:	IRQ numbers for Syswake GPIOs
+ *
+ * This is the main private data for the PDC GPIO driver. It encapsulates a
+ * gpio_chip, and the callbacks for the gpio_chip can access the private data
+ * with the to_pdc() macro below.
+ */
+struct tz1090_pdc_gpio {
+	struct gpio_chip chip;
+	void __iomem *reg;
+	int irq[GPIO_PDC_NIRQ];
+};
+#define to_pdc(c)	container_of(c, struct tz1090_pdc_gpio, chip)
+
+/* Register accesses into the PDC MMIO area */
+
+static inline void pdc_write(struct tz1090_pdc_gpio *priv, unsigned int reg_offs,
+		      unsigned int data)
+{
+	writel(data, priv->reg + reg_offs);
+}
+
+static inline unsigned int pdc_read(struct tz1090_pdc_gpio *priv,
+			     unsigned int reg_offs)
+{
+	return readl(priv->reg + reg_offs);
+}
+
+/* Generic GPIO interface */
+
+static int tz1090_pdc_gpio_direction_input(struct gpio_chip *chip,
+					   unsigned int offset)
+{
+	struct tz1090_pdc_gpio *priv = to_pdc(chip);
+	u32 value;
+	int lstat;
+
+	__global_lock2(lstat);
+	value = pdc_read(priv, REG_SOC_GPIO_CONTROL1);
+	value |= BIT(offset);
+	pdc_write(priv, REG_SOC_GPIO_CONTROL1, value);
+	__global_unlock2(lstat);
+
+	return 0;
+}
+
+static int tz1090_pdc_gpio_direction_output(struct gpio_chip *chip,
+					    unsigned int offset,
+					    int output_value)
+{
+	struct tz1090_pdc_gpio *priv = to_pdc(chip);
+	u32 value;
+	int lstat;
+
+	__global_lock2(lstat);
+	/* EXT_POWER doesn't seem to have an output value bit */
+	if (offset < 6) {
+		value = pdc_read(priv, REG_SOC_GPIO_CONTROL0);
+		if (output_value)
+			value |= BIT(offset);
+		else
+			value &= ~BIT(offset);
+		pdc_write(priv, REG_SOC_GPIO_CONTROL0, value);
+	}
+
+	value = pdc_read(priv, REG_SOC_GPIO_CONTROL1);
+	value &= ~BIT(offset);
+	pdc_write(priv, REG_SOC_GPIO_CONTROL1, value);
+	__global_unlock2(lstat);
+
+	return 0;
+}
+
+static int tz1090_pdc_gpio_get(struct gpio_chip *chip, unsigned int offset)
+{
+	struct tz1090_pdc_gpio *priv = to_pdc(chip);
+	return pdc_read(priv, REG_SOC_GPIO_STATUS) & BIT(offset);
+}
+
+static void tz1090_pdc_gpio_set(struct gpio_chip *chip, unsigned int offset,
+				int output_value)
+{
+	struct tz1090_pdc_gpio *priv = to_pdc(chip);
+	u32 value;
+	int lstat;
+
+	/* EXT_POWER doesn't seem to have an output value bit */
+	if (offset >= 6)
+		return;
+
+	__global_lock2(lstat);
+	value = pdc_read(priv, REG_SOC_GPIO_CONTROL0);
+	if (output_value)
+		value |= BIT(offset);
+	else
+		value &= ~BIT(offset);
+	pdc_write(priv, REG_SOC_GPIO_CONTROL0, value);
+	__global_unlock2(lstat);
+}
+
+static int tz1090_pdc_gpio_request(struct gpio_chip *chip, unsigned int offset)
+{
+	return pinctrl_request_gpio(chip->base + offset);
+}
+
+static void tz1090_pdc_gpio_free(struct gpio_chip *chip, unsigned int offset)
+{
+	pinctrl_free_gpio(chip->base + offset);
+}
+
+static int tz1090_pdc_gpio_to_irq(struct gpio_chip *chip, unsigned int offset)
+{
+	struct tz1090_pdc_gpio *priv = to_pdc(chip);
+	unsigned int syswake = offset - GPIO_PDC_IRQ_FIRST;
+	int irq;
+
+	/* only syswakes have irqs */
+	if (syswake >= GPIO_PDC_NIRQ)
+		return -EINVAL;
+
+	irq = priv->irq[syswake];
+	if (!irq)
+		return -EINVAL;
+
+	return irq;
+}
+
+static int tz1090_pdc_gpio_probe(struct platform_device *pdev)
+{
+	struct device_node *np = pdev->dev.of_node;
+	struct resource *res_regs;
+	struct tz1090_pdc_gpio *priv;
+	unsigned int i;
+
+	if (!np) {
+		dev_err(&pdev->dev, "must be instantiated via devicetree\n");
+		return -ENOENT;
+	}
+
+	res_regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	if (!res_regs) {
+		dev_err(&pdev->dev, "cannot find registers resource\n");
+		return -ENOENT;
+	}
+
+	priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
+	if (!priv) {
+		dev_err(&pdev->dev, "unable to allocate driver data\n");
+		return -ENOMEM;
+	}
+
+	/* Ioremap the registers */
+	priv->reg = devm_ioremap(&pdev->dev, res_regs->start,
+				 res_regs->end - res_regs->start);
+	if (!priv->reg) {
+		dev_err(&pdev->dev, "unable to ioremap registers\n");
+		return -ENOMEM;
+	}
+
+	/* Set up GPIO chip */
+	priv->chip.label		= "tz1090-pdc-gpio";
+	priv->chip.dev			= &pdev->dev;
+	priv->chip.direction_input	= tz1090_pdc_gpio_direction_input;
+	priv->chip.direction_output	= tz1090_pdc_gpio_direction_output;
+	priv->chip.get			= tz1090_pdc_gpio_get;
+	priv->chip.set			= tz1090_pdc_gpio_set;
+	priv->chip.free			= tz1090_pdc_gpio_free;
+	priv->chip.request		= tz1090_pdc_gpio_request;
+	priv->chip.to_irq		= tz1090_pdc_gpio_to_irq;
+	priv->chip.of_node		= np;
+
+	/* GPIO numbering */
+	priv->chip.base			= GPIO_PDC_BASE;
+	priv->chip.ngpio		= GPIO_PDC_NGPIO;
+
+	/* Map the syswake irqs */
+	for (i = 0; i < GPIO_PDC_NIRQ; ++i)
+		priv->irq[i] = irq_of_parse_and_map(np, i);
+
+	/* Add the GPIO bank */
+	gpiochip_add(&priv->chip);
+
+	return 0;
+}
+
+static struct of_device_id tz1090_pdc_gpio_of_match[] = {
+	{ .compatible = "img,tz1090-pdc-gpio" },
+	{ },
+};
+
+static struct platform_driver tz1090_pdc_gpio_driver = {
+	.driver = {
+		.name		= "tz1090-pdc-gpio",
+		.owner		= THIS_MODULE,
+		.of_match_table	= tz1090_pdc_gpio_of_match,
+	},
+	.probe		= tz1090_pdc_gpio_probe,
+};
+
+static int __init tz1090_pdc_gpio_init(void)
+{
+	return platform_driver_register(&tz1090_pdc_gpio_driver);
+}
+subsys_initcall(tz1090_pdc_gpio_init);
diff --git a/drivers/gpio/gpio-tz1090.c b/drivers/gpio/gpio-tz1090.c
new file mode 100644
index 0000000..23e0613
--- /dev/null
+++ b/drivers/gpio/gpio-tz1090.c
@@ -0,0 +1,606 @@
+/*
+ * Toumaz Xenif TZ1090 GPIO handling.
+ *
+ * Copyright (C) 2008-2013 Imagination Technologies Ltd.
+ *
+ *  Based on ARM PXA code and others.
+ *
+ * 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.
+ */
+
+#include <linux/bitops.h>
+#include <linux/export.h>
+#include <linux/gpio.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/irq.h>
+#include <linux/irqdomain.h>
+#include <linux/kernel.h>
+#include <linux/of_irq.h>
+#include <linux/pinctrl/consumer.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <linux/syscore_ops.h>
+#include <asm/global_lock.h>
+
+/* Register offsets from bank base address */
+#define REG_GPIO_DIR		0x00
+#define REG_GPIO_IRQ_PLRT	0x20
+#define REG_GPIO_IRQ_TYPE	0x30
+#define REG_GPIO_IRQ_EN		0x40
+#define REG_GPIO_IRQ_STS	0x50
+#define REG_GPIO_BIT_EN		0x60
+#define REG_GPIO_DIN		0x70
+#define REG_GPIO_DOUT		0x80
+
+/* REG_GPIO_IRQ_PLRT */
+#define REG_GPIO_IRQ_PLRT_LOW	0
+#define REG_GPIO_IRQ_PLRT_HIGH	1
+
+/* REG_GPIO_IRQ_TYPE */
+#define REG_GPIO_IRQ_TYPE_LEVEL	0
+#define REG_GPIO_IRQ_TYPE_EDGE	1
+
+/**
+ * struct tz1090_gpio_bank - GPIO bank private data
+ * @chip:	Generic GPIO chip for GPIO bank
+ * @domain:	IRQ domain for GPIO bank (may be NULL)
+ * @reg:	Base of registers, offset for this GPIO bank
+ * @irq:	IRQ number for GPIO bank
+ * @label:	Debug GPIO bank label, used for storage of chip->label
+ *
+ * This is the main private data for a GPIO bank. It encapsulates a gpio_chip,
+ * and the callbacks for the gpio_chip can access the private data with the
+ * to_bank() macro below.
+ */
+struct tz1090_gpio_bank {
+	struct gpio_chip chip;
+	struct irq_domain *domain;
+	void __iomem *reg;
+	int irq;
+	char label[16];
+};
+#define to_bank(c)	container_of(c, struct tz1090_gpio_bank, chip)
+
+/**
+ * struct tz1090_gpio - Overall GPIO device private data
+ * @dev:	Device (from platform device)
+ * @reg:	Base of GPIO registers
+ *
+ * Represents the overall GPIO device. This structure is actually only
+ * temporary, and used during init.
+ */
+struct tz1090_gpio {
+	struct device *dev;
+	void __iomem *reg;
+};
+
+/**
+ * struct tz1090_gpio_bank_info - Temporary registration info for GPIO bank
+ * @priv:	Overall GPIO device private data
+ * @node:	Device tree node specific to this GPIO bank
+ * @index:	Index of bank in range 0-2
+ */
+struct tz1090_gpio_bank_info {
+	struct tz1090_gpio *priv;
+	struct device_node *node;
+	unsigned int index;
+};
+
+/* Convenience register accessors */
+static inline void tz1090_gpio_write(struct tz1090_gpio_bank *bank,
+			      unsigned int reg_offs, u32 data)
+{
+	iowrite32(data, bank->reg + reg_offs);
+}
+
+static inline u32 tz1090_gpio_read(struct tz1090_gpio_bank *bank,
+			    unsigned int reg_offs)
+{
+	return ioread32(bank->reg + reg_offs);
+}
+
+/* caller must hold LOCK2 */
+static inline void _tz1090_gpio_clear_bit(struct tz1090_gpio_bank *bank,
+					  unsigned int reg_offs,
+					  unsigned int offset)
+{
+	u32 value;
+
+	value = tz1090_gpio_read(bank, reg_offs);
+	value &= ~BIT(offset);
+	tz1090_gpio_write(bank, reg_offs, value);
+}
+
+static void tz1090_gpio_clear_bit(struct tz1090_gpio_bank *bank,
+				  unsigned int reg_offs,
+				  unsigned int offset)
+{
+	int lstat;
+
+	__global_lock2(lstat);
+	_tz1090_gpio_clear_bit(bank, reg_offs, offset);
+	__global_unlock2(lstat);
+}
+
+/* caller must hold LOCK2 */
+static inline void _tz1090_gpio_set_bit(struct tz1090_gpio_bank *bank,
+					unsigned int reg_offs,
+					unsigned int offset)
+{
+	u32 value;
+
+	value = tz1090_gpio_read(bank, reg_offs);
+	value |= BIT(offset);
+	tz1090_gpio_write(bank, reg_offs, value);
+}
+
+static void tz1090_gpio_set_bit(struct tz1090_gpio_bank *bank,
+				unsigned int reg_offs,
+				unsigned int offset)
+{
+	int lstat;
+
+	__global_lock2(lstat);
+	_tz1090_gpio_set_bit(bank, reg_offs, offset);
+	__global_unlock2(lstat);
+}
+
+/* caller must hold LOCK2 */
+static inline void _tz1090_gpio_mod_bit(struct tz1090_gpio_bank *bank,
+					unsigned int reg_offs,
+					unsigned int offset,
+					bool val)
+{
+	u32 value;
+
+	value = tz1090_gpio_read(bank, reg_offs);
+	value &= ~BIT(offset);
+	if (val)
+		value |= BIT(offset);
+	tz1090_gpio_write(bank, reg_offs, value);
+}
+
+static void tz1090_gpio_mod_bit(struct tz1090_gpio_bank *bank,
+				unsigned int reg_offs,
+				unsigned int offset,
+				bool val)
+{
+	int lstat;
+
+	__global_lock2(lstat);
+	_tz1090_gpio_mod_bit(bank, reg_offs, offset, val);
+	__global_unlock2(lstat);
+}
+
+static inline int tz1090_gpio_read_bit(struct tz1090_gpio_bank *bank,
+				       unsigned int reg_offs,
+				       unsigned int offset)
+{
+	return tz1090_gpio_read(bank, reg_offs) & BIT(offset);
+}
+
+/* GPIO chip callbacks */
+
+static int tz1090_gpio_direction_input(struct gpio_chip *chip,
+				       unsigned int offset)
+{
+	struct tz1090_gpio_bank *bank = to_bank(chip);
+	tz1090_gpio_set_bit(bank, REG_GPIO_DIR, offset);
+
+	return 0;
+}
+
+static int tz1090_gpio_direction_output(struct gpio_chip *chip,
+					unsigned int offset, int output_value)
+{
+	struct tz1090_gpio_bank *bank = to_bank(chip);
+	int lstat;
+
+	__global_lock2(lstat);
+	_tz1090_gpio_mod_bit(bank, REG_GPIO_DOUT, offset, output_value);
+	_tz1090_gpio_clear_bit(bank, REG_GPIO_DIR, offset);
+	__global_unlock2(lstat);
+
+	return 0;
+}
+
+/*
+ * Return GPIO level
+ */
+static int tz1090_gpio_get(struct gpio_chip *chip, unsigned int offset)
+{
+	struct tz1090_gpio_bank *bank = to_bank(chip);
+
+	return tz1090_gpio_read_bit(bank, REG_GPIO_DIN, offset);
+}
+
+/*
+ * Set output GPIO level
+ */
+static void tz1090_gpio_set(struct gpio_chip *chip, unsigned int offset,
+			    int output_value)
+{
+	struct tz1090_gpio_bank *bank = to_bank(chip);
+
+	tz1090_gpio_mod_bit(bank, REG_GPIO_DOUT, offset, output_value);
+}
+
+static int tz1090_gpio_request(struct gpio_chip *chip, unsigned int offset)
+{
+	struct tz1090_gpio_bank *bank = to_bank(chip);
+	int ret;
+
+	ret = pinctrl_request_gpio(chip->base + offset);
+	if (ret)
+		return ret;
+
+	tz1090_gpio_set_bit(bank, REG_GPIO_DIR, offset);
+	tz1090_gpio_set_bit(bank, REG_GPIO_BIT_EN, offset);
+
+	return 0;
+}
+
+static void tz1090_gpio_free(struct gpio_chip *chip, unsigned int offset)
+{
+	struct tz1090_gpio_bank *bank = to_bank(chip);
+
+	pinctrl_free_gpio(chip->base + offset);
+
+	tz1090_gpio_clear_bit(bank, REG_GPIO_BIT_EN, offset);
+}
+
+static int tz1090_gpio_to_irq(struct gpio_chip *chip, unsigned int offset)
+{
+	struct tz1090_gpio_bank *bank = to_bank(chip);
+
+	if (!bank->domain)
+		return -EINVAL;
+
+	return irq_create_mapping(bank->domain, offset);
+}
+
+/* IRQ chip handlers */
+
+/* Get TZ1090 GPIO chip from irq data provided to generic IRQ callbacks */
+static inline struct tz1090_gpio_bank *irqd_to_gpio_bank(struct irq_data *data)
+{
+	return (struct tz1090_gpio_bank *)data->domain->host_data;
+}
+
+static void tz1090_gpio_irq_polarity(struct tz1090_gpio_bank *bank,
+				     unsigned int offset, unsigned int polarity)
+{
+	tz1090_gpio_mod_bit(bank, REG_GPIO_IRQ_PLRT, offset, polarity);
+}
+
+static void tz1090_gpio_irq_type(struct tz1090_gpio_bank *bank,
+				 unsigned int offset, unsigned int type)
+{
+	tz1090_gpio_mod_bit(bank, REG_GPIO_IRQ_TYPE, offset, type);
+}
+
+/* set polarity to trigger on next edge, whether rising or falling */
+static void tz1090_gpio_irq_next_edge(struct tz1090_gpio_bank *bank,
+				      unsigned int offset)
+{
+	unsigned int value_p, value_i;
+	int lstat;
+
+	/*
+	 * Set the GPIO's interrupt polarity to the opposite of the current
+	 * input value so that the next edge triggers an interrupt.
+	 */
+	__global_lock2(lstat);
+	value_i = ~tz1090_gpio_read(bank, REG_GPIO_DIN);
+	value_p = tz1090_gpio_read(bank, REG_GPIO_IRQ_PLRT);
+	value_p &= ~BIT(offset);
+	value_p |= value_i & BIT(offset);
+	tz1090_gpio_write(bank, REG_GPIO_IRQ_PLRT, value_p);
+	__global_unlock2(lstat);
+}
+
+static unsigned int gpio_startup_irq(struct irq_data *data)
+{
+	/*
+	 * This warning indicates that the type of the irq hasn't been set
+	 * before enabling the irq. This would normally be done by passing some
+	 * trigger flags to request_irq().
+	 */
+	WARN(irqd_get_trigger_type(data) == IRQ_TYPE_NONE,
+		"irq type not set before enabling gpio irq %d", data->irq);
+
+	irq_gc_ack_clr_bit(data);
+	irq_gc_mask_set_bit(data);
+	return 0;
+}
+
+static int gpio_set_irq_type(struct irq_data *data, unsigned int flow_type)
+{
+	struct tz1090_gpio_bank *bank = irqd_to_gpio_bank(data);
+	unsigned int type;
+	unsigned int polarity;
+
+	switch (flow_type) {
+	case IRQ_TYPE_EDGE_BOTH:
+		type = REG_GPIO_IRQ_TYPE_EDGE;
+		polarity = REG_GPIO_IRQ_PLRT_LOW;
+		break;
+	case IRQ_TYPE_EDGE_RISING:
+		type = REG_GPIO_IRQ_TYPE_EDGE;
+		polarity = REG_GPIO_IRQ_PLRT_HIGH;
+		break;
+	case IRQ_TYPE_EDGE_FALLING:
+		type = REG_GPIO_IRQ_TYPE_EDGE;
+		polarity = REG_GPIO_IRQ_PLRT_LOW;
+		break;
+	case IRQ_TYPE_LEVEL_HIGH:
+		type = REG_GPIO_IRQ_TYPE_LEVEL;
+		polarity = REG_GPIO_IRQ_PLRT_HIGH;
+		break;
+	case IRQ_TYPE_LEVEL_LOW:
+		type = REG_GPIO_IRQ_TYPE_LEVEL;
+		polarity = REG_GPIO_IRQ_PLRT_LOW;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	tz1090_gpio_irq_type(bank, data->hwirq, type);
+	irq_setup_alt_chip(data, flow_type);
+
+	if (flow_type == IRQ_TYPE_EDGE_BOTH)
+		tz1090_gpio_irq_next_edge(bank, data->hwirq);
+	else
+		tz1090_gpio_irq_polarity(bank, data->hwirq, polarity);
+
+	return 0;
+}
+
+#ifdef CONFIG_SUSPEND
+static int gpio_set_irq_wake(struct irq_data *data, unsigned int on)
+{
+	struct tz1090_gpio_bank *bank = irqd_to_gpio_bank(data);
+
+#ifdef CONFIG_PM_DEBUG
+	pr_info("irq_wake irq%d state:%d\n", data->irq, on);
+#endif
+
+	/* wake on gpio block interrupt */
+	return irq_set_irq_wake(bank->irq, on);
+}
+#else
+#define gpio_set_irq_wake NULL
+#endif
+
+static void tz1090_gpio_irq_handler(unsigned int irq, struct irq_desc *desc)
+{
+	irq_hw_number_t hw;
+	unsigned int irq_stat, irq_no;
+	struct tz1090_gpio_bank *bank;
+	struct irq_desc *child_desc;
+
+	bank = (struct tz1090_gpio_bank *)irq_desc_get_handler_data(desc);
+	irq_stat = tz1090_gpio_read(bank, REG_GPIO_DIR) &
+		   tz1090_gpio_read(bank, REG_GPIO_IRQ_STS) &
+		   tz1090_gpio_read(bank, REG_GPIO_IRQ_EN) &
+		   0x3FFFFFFF; /* 30 bits only */
+
+	for (hw = 0; irq_stat; irq_stat >>= 1, ++hw) {
+		if (!(irq_stat & 1))
+			continue;
+
+		irq_no = irq_linear_revmap(bank->domain, hw);
+		child_desc = irq_to_desc(irq_no);
+
+		/* Toggle edge for pin with both edges triggering enabled */
+		if (irqd_get_trigger_type(&child_desc->irq_data)
+				== IRQ_TYPE_EDGE_BOTH)
+			tz1090_gpio_irq_next_edge(bank, hw);
+
+		generic_handle_irq_desc(irq_no, child_desc);
+	}
+}
+
+static int tz1090_gpio_bank_probe(struct tz1090_gpio_bank_info *info)
+{
+	struct device_node *np = info->node;
+	struct device *dev = info->priv->dev;
+	struct tz1090_gpio_bank *bank;
+	struct irq_chip_generic *gc;
+	int err;
+
+	bank = devm_kzalloc(dev, sizeof(*bank), GFP_KERNEL);
+	if (!bank) {
+		dev_err(dev, "unable to allocate driver data\n");
+		return -ENOMEM;
+	}
+
+	/* Offset the main registers to the first register in this bank */
+	bank->reg = info->priv->reg + info->index * 4;
+
+	/* Set up GPIO chip */
+	snprintf(bank->label, sizeof(bank->label), "tz1090-gpio-%u",
+		 info->index);
+	bank->chip.label		= bank->label;
+	bank->chip.dev			= dev;
+	bank->chip.direction_input	= tz1090_gpio_direction_input;
+	bank->chip.direction_output	= tz1090_gpio_direction_output;
+	bank->chip.get			= tz1090_gpio_get;
+	bank->chip.set			= tz1090_gpio_set;
+	bank->chip.free			= tz1090_gpio_free;
+	bank->chip.request		= tz1090_gpio_request;
+	bank->chip.to_irq		= tz1090_gpio_to_irq;
+	bank->chip.of_node		= np;
+
+	/* GPIO numbering from 0 */
+	bank->chip.base			= info->index * 30;
+	bank->chip.ngpio		= 30;
+
+	/* Add the GPIO bank */
+	gpiochip_add(&bank->chip);
+
+	/* Get the GPIO bank IRQ if provided */
+	bank->irq = irq_of_parse_and_map(np, 0);
+
+	/* The interrupt is optional (it may be used by another core on chip) */
+	if (bank->irq < 0) {
+		dev_info(dev, "IRQ not provided for bank %u, IRQs disabled\n",
+			 info->index);
+		return 0;
+	}
+
+	dev_info(dev, "Setting up IRQs for GPIO bank %u\n",
+		 info->index);
+
+	/*
+	 * Initialise all interrupts to disabled so we don't get
+	 * spurious ones on a dirty boot and hit the BUG_ON in the
+	 * handler.
+	 */
+	tz1090_gpio_write(bank, REG_GPIO_IRQ_EN, 0);
+
+	/* Add a virtual IRQ for each GPIO */
+	bank->domain = irq_domain_add_linear(np,
+					     bank->chip.ngpio,
+					     &irq_generic_chip_ops,
+					     bank);
+
+	/* Set up a generic irq chip with 2 chip types (level and edge) */
+	err = irq_alloc_domain_generic_chips(bank->domain, bank->chip.ngpio, 2,
+					     bank->label, handle_bad_irq, 0, 0,
+					     IRQ_GC_INIT_NESTED_LOCK);
+	if (err) {
+		dev_info(dev,
+			 "irq_alloc_domain_generic_chips failed for bank %u, IRQs disabled\n",
+			 info->index);
+		irq_domain_remove(bank->domain);
+		return 0;
+	}
+
+	gc = irq_get_domain_generic_chip(bank->domain, 0);
+	gc->reg_base	= bank->reg;
+
+	/* level chip type */
+	gc->chip_types[0].type			= IRQ_TYPE_LEVEL_MASK;
+	gc->chip_types[0].handler		= handle_level_irq;
+	gc->chip_types[0].regs.ack		= REG_GPIO_IRQ_STS;
+	gc->chip_types[0].regs.mask		= REG_GPIO_IRQ_EN;
+	gc->chip_types[0].chip.irq_startup	= gpio_startup_irq,
+	gc->chip_types[0].chip.irq_ack		= irq_gc_ack_clr_bit,
+	gc->chip_types[0].chip.irq_mask		= irq_gc_mask_clr_bit,
+	gc->chip_types[0].chip.irq_unmask	= irq_gc_mask_set_bit,
+	gc->chip_types[0].chip.irq_set_type	= gpio_set_irq_type,
+	gc->chip_types[0].chip.irq_set_wake	= gpio_set_irq_wake,
+	gc->chip_types[0].chip.flags		= IRQCHIP_MASK_ON_SUSPEND,
+
+	/* edge chip type */
+	gc->chip_types[1].type			= IRQ_TYPE_EDGE_BOTH;
+	gc->chip_types[1].handler		= handle_edge_irq;
+	gc->chip_types[1].regs.ack		= REG_GPIO_IRQ_STS;
+	gc->chip_types[1].regs.mask		= REG_GPIO_IRQ_EN;
+	gc->chip_types[1].chip.irq_startup	= gpio_startup_irq,
+	gc->chip_types[1].chip.irq_ack		= irq_gc_ack_clr_bit,
+	gc->chip_types[1].chip.irq_mask		= irq_gc_mask_clr_bit,
+	gc->chip_types[1].chip.irq_unmask	= irq_gc_mask_set_bit,
+	gc->chip_types[1].chip.irq_set_type	= gpio_set_irq_type,
+	gc->chip_types[1].chip.irq_set_wake	= gpio_set_irq_wake,
+	gc->chip_types[1].chip.flags		= IRQCHIP_MASK_ON_SUSPEND,
+
+	/* Setup chained handler for this GPIO bank */
+	irq_set_handler_data(bank->irq, bank);
+	irq_set_chained_handler(bank->irq, tz1090_gpio_irq_handler);
+
+	return 0;
+}
+
+static void tz1090_gpio_register_banks(struct tz1090_gpio *priv)
+{
+	struct device_node *np = priv->dev->of_node;
+	struct device_node *node;
+
+	for_each_available_child_of_node(np, node) {
+		struct tz1090_gpio_bank_info info;
+		u32 addr;
+		int ret;
+
+		ret = of_property_read_u32(node, "reg", &addr);
+		if (ret) {
+			dev_err(priv->dev, "invalid reg on %s\n",
+				node->full_name);
+			continue;
+		}
+		if (addr >= 3) {
+			dev_err(priv->dev, "index %u in %s out of range\n",
+				addr, node->full_name);
+			continue;
+		}
+
+		info.index = addr;
+		info.node = of_node_get(node);
+		info.priv = priv;
+
+		ret = tz1090_gpio_bank_probe(&info);
+		if (ret) {
+			dev_err(priv->dev, "failure registering %s\n",
+				node->full_name);
+			of_node_put(node);
+			continue;
+		}
+	}
+}
+
+static int tz1090_gpio_probe(struct platform_device *pdev)
+{
+	struct device_node *np = pdev->dev.of_node;
+	struct resource *res_regs;
+	struct tz1090_gpio priv;
+
+	if (!np) {
+		dev_err(&pdev->dev, "must be instantiated via devicetree\n");
+		return -ENOENT;
+	}
+
+	res_regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	if (!res_regs) {
+		dev_err(&pdev->dev, "cannot find registers resource\n");
+		return -ENOENT;
+	}
+
+	priv.dev = &pdev->dev;
+
+	/* Ioremap the registers */
+	priv.reg = devm_ioremap(&pdev->dev, res_regs->start,
+				 res_regs->end - res_regs->start);
+	if (!priv.reg) {
+		dev_err(&pdev->dev, "unable to ioremap registers\n");
+		return -ENOMEM;
+	}
+
+	/* Look for banks */
+	tz1090_gpio_register_banks(&priv);
+
+	return 0;
+}
+
+static struct of_device_id tz1090_gpio_of_match[] = {
+	{ .compatible = "img,tz1090-gpio" },
+	{ },
+};
+
+static struct platform_driver tz1090_gpio_driver = {
+	.driver = {
+		.name		= "tz1090-gpio",
+		.owner		= THIS_MODULE,
+		.of_match_table	= tz1090_gpio_of_match,
+	},
+	.probe		= tz1090_gpio_probe,
+};
+
+static int __init tz1090_gpio_init(void)
+{
+	return platform_driver_register(&tz1090_gpio_driver);
+}
+subsys_initcall(tz1090_gpio_init);
diff --git a/drivers/gpio/gpio-ucb1400.c b/drivers/gpio/gpio-ucb1400.c
index 6d0feb2..1a605f2a 100644
--- a/drivers/gpio/gpio-ucb1400.c
+++ b/drivers/gpio/gpio-ucb1400.c
@@ -45,7 +45,7 @@ static void ucb1400_gpio_set(struct gpio_chip *gc, unsigned off, int val)
 
 static int ucb1400_gpio_probe(struct platform_device *dev)
 {
-	struct ucb1400_gpio *ucb = dev->dev.platform_data;
+	struct ucb1400_gpio *ucb = dev_get_platdata(&dev->dev);
 	int err = 0;
 
 	if (!(ucb && ucb->gpio_offset)) {
diff --git a/drivers/gpio/gpio-wm831x.c b/drivers/gpio/gpio-wm831x.c
index 2a743e1..456000c 100644
--- a/drivers/gpio/gpio-wm831x.c
+++ b/drivers/gpio/gpio-wm831x.c
@@ -246,7 +246,7 @@ static struct gpio_chip template_chip = {
 static int wm831x_gpio_probe(struct platform_device *pdev)
 {
 	struct wm831x *wm831x = dev_get_drvdata(pdev->dev.parent);
-	struct wm831x_pdata *pdata = wm831x->dev->platform_data;
+	struct wm831x_pdata *pdata = dev_get_platdata(wm831x->dev);
 	struct wm831x_gpio *wm831x_gpio;
 	int ret;
 
diff --git a/drivers/gpio/gpio-wm8350.c b/drivers/gpio/gpio-wm8350.c
index 0b598cf..fc49154 100644
--- a/drivers/gpio/gpio-wm8350.c
+++ b/drivers/gpio/gpio-wm8350.c
@@ -112,7 +112,7 @@ static struct gpio_chip template_chip = {
 static int wm8350_gpio_probe(struct platform_device *pdev)
 {
 	struct wm8350 *wm8350 = dev_get_drvdata(pdev->dev.parent);
-	struct wm8350_platform_data *pdata = wm8350->dev->platform_data;
+	struct wm8350_platform_data *pdata = dev_get_platdata(wm8350->dev);
 	struct wm8350_gpio_data *wm8350_gpio;
 	int ret;
 
diff --git a/drivers/gpio/gpio-wm8994.c b/drivers/gpio/gpio-wm8994.c
index ae409fd..a53dbde 100644
--- a/drivers/gpio/gpio-wm8994.c
+++ b/drivers/gpio/gpio-wm8994.c
@@ -248,7 +248,7 @@ static struct gpio_chip template_chip = {
 static int wm8994_gpio_probe(struct platform_device *pdev)
 {
 	struct wm8994 *wm8994 = dev_get_drvdata(pdev->dev.parent);
-	struct wm8994_pdata *pdata = wm8994->dev->platform_data;
+	struct wm8994_pdata *pdata = dev_get_platdata(wm8994->dev);
 	struct wm8994_gpio *wm8994_gpio;
 	int ret;
 
diff --git a/drivers/gpio/gpiolib-of.c b/drivers/gpio/gpiolib-of.c
index 665f953..ba9876f 100644
--- a/drivers/gpio/gpiolib-of.c
+++ b/drivers/gpio/gpiolib-of.c
@@ -76,7 +76,8 @@ int of_get_named_gpio_flags(struct device_node *np, const char *propname,
 	ret = of_parse_phandle_with_args(np, propname, "#gpio-cells", index,
 					 &gg_data.gpiospec);
 	if (ret) {
-		pr_debug("%s: can't parse gpios property\n", __func__);
+		pr_debug("%s: can't parse gpios property of node '%s[%d]'\n",
+			__func__, np->full_name, index);
 		return ret;
 	}
 
diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index ff0fd65..86ef346 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -349,7 +349,7 @@ static ssize_t gpio_value_store(struct device *dev,
 	else {
 		long		value;
 
-		status = strict_strtol(buf, 0, &value);
+		status = kstrtol(buf, 0, &value);
 		if (status == 0) {
 			if (test_bit(FLAG_ACTIVE_LOW, &desc->flags))
 				value = !value;
@@ -570,7 +570,7 @@ static ssize_t gpio_active_low_store(struct device *dev,
 	} else {
 		long		value;
 
-		status = strict_strtol(buf, 0, &value);
+		status = kstrtol(buf, 0, &value);
 		if (status == 0)
 			status = sysfs_set_active_low(desc, dev, value != 0);
 	}
@@ -652,7 +652,7 @@ static ssize_t export_store(struct class *class,
 	struct gpio_desc	*desc;
 	int			status;
 
-	status = strict_strtol(buf, 0, &gpio);
+	status = kstrtol(buf, 0, &gpio);
 	if (status < 0)
 		goto done;
 
@@ -694,7 +694,7 @@ static ssize_t unexport_store(struct class *class,
 	struct gpio_desc	*desc;
 	int			status;
 
-	status = strict_strtol(buf, 0, &gpio);
+	status = kstrtol(buf, 0, &gpio);
 	if (status < 0)
 		goto done;
 
@@ -1398,7 +1398,7 @@ static int gpiod_request(struct gpio_desc *desc, const char *label)
 	int			status = -EPROBE_DEFER;
 	unsigned long		flags;
 
-	if (!desc) {
+	if (!desc || !desc->chip) {
 		pr_warn("%s: invalid GPIO\n", __func__);
 		return -EINVAL;
 	}
@@ -1406,8 +1406,6 @@ static int gpiod_request(struct gpio_desc *desc, const char *label)
 	spin_lock_irqsave(&gpio_lock, flags);
 
 	chip = desc->chip;
-	if (chip == NULL)
-		goto done;
 
 	if (!try_module_get(chip->owner))
 		goto done;
@@ -1630,16 +1628,20 @@ static int gpiod_direction_input(struct gpio_desc *desc)
 	int			status = -EINVAL;
 	int			offset;
 
-	if (!desc) {
+	if (!desc || !desc->chip) {
 		pr_warn("%s: invalid GPIO\n", __func__);
 		return -EINVAL;
 	}
 
+	chip = desc->chip;
+	if (!chip->get || !chip->direction_input) {
+		pr_warn("%s: missing get() or direction_input() operations\n",
+			__func__);
+		return -EIO;
+	}
+
 	spin_lock_irqsave(&gpio_lock, flags);
 
-	chip = desc->chip;
-	if (!chip || !chip->get || !chip->direction_input)
-		goto fail;
 	status = gpio_ensure_requested(desc);
 	if (status < 0)
 		goto fail;
@@ -1691,7 +1693,7 @@ static int gpiod_direction_output(struct gpio_desc *desc, int value)
 	int			status = -EINVAL;
 	int offset;
 
-	if (!desc) {
+	if (!desc || !desc->chip) {
 		pr_warn("%s: invalid GPIO\n", __func__);
 		return -EINVAL;
 	}
@@ -1704,11 +1706,15 @@ static int gpiod_direction_output(struct gpio_desc *desc, int value)
 	if (!value && test_bit(FLAG_OPEN_SOURCE,  &desc->flags))
 		return gpiod_direction_input(desc);
 
+	chip = desc->chip;
+	if (!chip->set || !chip->direction_output) {
+		pr_warn("%s: missing set() or direction_output() operations\n",
+			__func__);
+		return -EIO;
+	}
+
 	spin_lock_irqsave(&gpio_lock, flags);
 
-	chip = desc->chip;
-	if (!chip || !chip->set || !chip->direction_output)
-		goto fail;
 	status = gpio_ensure_requested(desc);
 	if (status < 0)
 		goto fail;
@@ -1757,6 +1763,9 @@ EXPORT_SYMBOL_GPL(gpio_direction_output);
  * gpio_set_debounce - sets @debounce time for a @gpio
  * @gpio: the gpio to set debounce time
  * @debounce: debounce time is microseconds
+ *
+ * returns -ENOTSUPP if the controller does not support setting
+ * debounce.
  */
 static int gpiod_set_debounce(struct gpio_desc *desc, unsigned debounce)
 {
@@ -1765,16 +1774,19 @@ static int gpiod_set_debounce(struct gpio_desc *desc, unsigned debounce)
 	int			status = -EINVAL;
 	int			offset;
 
-	if (!desc) {
+	if (!desc || !desc->chip) {
 		pr_warn("%s: invalid GPIO\n", __func__);
 		return -EINVAL;
 	}
 
-	spin_lock_irqsave(&gpio_lock, flags);
-
 	chip = desc->chip;
-	if (!chip || !chip->set || !chip->set_debounce)
-		goto fail;
+	if (!chip->set || !chip->set_debounce) {
+		pr_debug("%s: missing set() or set_debounce() operations\n",
+			__func__);
+		return -ENOTSUPP;
+	}
+
+	spin_lock_irqsave(&gpio_lock, flags);
 
 	status = gpio_ensure_requested(desc);
 	if (status < 0)