Merge tag 'gpio-v4.4-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio

Pull GPIO updates from Linus Walleij:
 "Here is the bulk of GPIO changes for the v4.4 development cycle.

  The only changes hitting outside drivers/gpio are in the pin control
  subsystem and these seem to have settled nicely in linux-next.

  Development mistakes and catfights are nicely documented in the
  reverts as you can see.  The outcome of the ABI fight is that we're
  working on a chardev ABI for GPIO now, where hope to show results for
  the v4.5 kernel.

  Summary of changes:

  GPIO core:
   - Define and handle flags for open drain/open collector and open
     source/open emitter, also know as "single-ended" configurations.
   - Generic request/free operations that handle calling out to the
     (optional) pin control backend.
   - Some refactoring related to an ABI change that did not happen, yet
     provide useful.
   - Added a real-time compliance checklist.  Many GPIO chips have
     irqchips, and need to think this over with the RT patches going
     upstream.
   - Restructure, fix and clean up Kconfig menus a bit.

  New drivers:
   - New driver for AMD Promony.
   - New driver for ACCES 104-IDIO-16, a port-mapped I/O card,
     ISA-style.  Very retro.

  Subdriver changes:
   - OMAP changes to handle real time requirements.
   - Handle trigger types for edge and level IRQs on PL061 properly.  As
     this hardware is very common it needs to set a proper example for
     others to follow.
   - Some container_of() cleanups.
   - Delete the unused MSM driver in favor of the driver that is
     embedded inside the pin control driver.
   - Cleanup of the ath79 GPIO driver used by many, many OpenWRT router
     targets.
   - A consolidated IT87xx driver replacing the earlier very specific
     IT8761e driver.
   - Handle the TI TCA9539 in the PCA953x driver.  Also handle ACPI
     devices in this subdriver.
   - Drop xilinx arch dependencies as these FPGAs seem to profilate over
     a few different architectures.  MIPS and ARM come to mind"

* tag 'gpio-v4.4-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio: (57 commits)
  gpio: fix up SPI submenu
  gpio: drop surplus I2C dependencies
  gpio: drop surplus X86 dependencies
  gpio: dt-bindings: document the official use of "ngpios"
  gpio: MAINTAINERS: Add an entry for the ATH79 GPIO driver
  gpio / ACPI: Allow shared GPIO event to be read via operation region
  gpio: group port-mapped I/O drivers in a menu
  gpio: Add ACCES 104-IDIO-16 driver maintainer entry
  gpio: zynq: Document interrupt-controller DT binding
  gpio: xilinx: Drop architecture dependencies
  gpio: generic: Revert to old error handling in bgpio_map
  gpio: add a real time compliance notes
  Revert "gpio: add a real time compliance checklist"
  gpio: Add GPIO support for the ACCES 104-IDIO-16
  gpio: driver for AMD Promontory
  gpio: xlp: Convert to use gpiolib irqchip helpers
  gpio: add a real time compliance checklist
  gpio/xilinx: enable for MIPS
  gpiolib: Add and use OF_GPIO_SINGLE_ENDED flag
  gpiolib: Split GPIO flags parsing and GPIO configuration
  ...

21 files changed, 42 insertions, 290 deletions

diff --git a/drivers/pinctrl/bcm/pinctrl-bcm2835.c b/drivers/pinctrl/bcm/pinctrl-bcm2835.c
index 8efa235..a1ea565 100644
--- a/drivers/pinctrl/bcm/pinctrl-bcm2835.c
+++ b/drivers/pinctrl/bcm/pinctrl-bcm2835.c
@@ -330,16 +330,6 @@ static inline void bcm2835_pinctrl_fsel_set(
 	bcm2835_gpio_wr(pc, FSEL_REG(pin), val);
 }
 
-static int bcm2835_gpio_request(struct gpio_chip *chip, unsigned offset)
-{
-	return pinctrl_request_gpio(chip->base + offset);
-}
-
-static void bcm2835_gpio_free(struct gpio_chip *chip, unsigned offset)
-{
-	pinctrl_free_gpio(chip->base + offset);
-}
-
 static int bcm2835_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
 {
 	return pinctrl_gpio_direction_input(chip->base + offset);
@@ -375,8 +365,8 @@ static int bcm2835_gpio_to_irq(struct gpio_chip *chip, unsigned offset)
 static struct gpio_chip bcm2835_gpio_chip = {
 	.label = MODULE_NAME,
 	.owner = THIS_MODULE,
-	.request = bcm2835_gpio_request,
-	.free = bcm2835_gpio_free,
+	.request = gpiochip_generic_request,
+	.free = gpiochip_generic_free,
 	.direction_input = bcm2835_gpio_direction_input,
 	.direction_output = bcm2835_gpio_direction_output,
 	.get = bcm2835_gpio_get,
diff --git a/drivers/pinctrl/intel/pinctrl-cherryview.c b/drivers/pinctrl/intel/pinctrl-cherryview.c
index 270c127..84936ba 100644
--- a/drivers/pinctrl/intel/pinctrl-cherryview.c
+++ b/drivers/pinctrl/intel/pinctrl-cherryview.c
@@ -1149,16 +1149,6 @@ static struct pinctrl_desc chv_pinctrl_desc = {
 	.owner = THIS_MODULE,
 };
 
-static int chv_gpio_request(struct gpio_chip *chip, unsigned offset)
-{
-	return pinctrl_request_gpio(chip->base + offset);
-}
-
-static void chv_gpio_free(struct gpio_chip *chip, unsigned offset)
-{
-	pinctrl_free_gpio(chip->base + offset);
-}
-
 static unsigned chv_gpio_offset_to_pin(struct chv_pinctrl *pctrl,
 				       unsigned offset)
 {
@@ -1238,8 +1228,8 @@ static int chv_gpio_direction_output(struct gpio_chip *chip, unsigned offset,
 
 static const struct gpio_chip chv_gpio_chip = {
 	.owner = THIS_MODULE,
-	.request = chv_gpio_request,
-	.free = chv_gpio_free,
+	.request = gpiochip_generic_request,
+	.free = gpiochip_generic_free,
 	.get_direction = chv_gpio_get_direction,
 	.direction_input = chv_gpio_direction_input,
 	.direction_output = chv_gpio_direction_output,
diff --git a/drivers/pinctrl/intel/pinctrl-intel.c b/drivers/pinctrl/intel/pinctrl-intel.c
index c427454..392e28d 100644
--- a/drivers/pinctrl/intel/pinctrl-intel.c
+++ b/drivers/pinctrl/intel/pinctrl-intel.c
@@ -596,16 +596,6 @@ static const struct pinctrl_desc intel_pinctrl_desc = {
 	.owner = THIS_MODULE,
 };
 
-static int intel_gpio_request(struct gpio_chip *chip, unsigned offset)
-{
-	return pinctrl_request_gpio(chip->base + offset);
-}
-
-static void intel_gpio_free(struct gpio_chip *chip, unsigned offset)
-{
-	pinctrl_free_gpio(chip->base + offset);
-}
-
 static int intel_gpio_get(struct gpio_chip *chip, unsigned offset)
 {
 	struct intel_pinctrl *pctrl = gpiochip_to_pinctrl(chip);
@@ -653,8 +643,8 @@ static int intel_gpio_direction_output(struct gpio_chip *chip, unsigned offset,
 
 static const struct gpio_chip intel_gpio_chip = {
 	.owner = THIS_MODULE,
-	.request = intel_gpio_request,
-	.free = intel_gpio_free,
+	.request = gpiochip_generic_request,
+	.free = gpiochip_generic_free,
 	.direction_input = intel_gpio_direction_input,
 	.direction_output = intel_gpio_direction_output,
 	.get = intel_gpio_get,
diff --git a/drivers/pinctrl/mediatek/pinctrl-mtk-common.c b/drivers/pinctrl/mediatek/pinctrl-mtk-common.c
index 5279e23..f307f1d 100644
--- a/drivers/pinctrl/mediatek/pinctrl-mtk-common.c
+++ b/drivers/pinctrl/mediatek/pinctrl-mtk-common.c
@@ -723,16 +723,6 @@ static const struct pinmux_ops mtk_pmx_ops = {
 	.gpio_set_direction	= mtk_pmx_gpio_set_direction,
 };
 
-static int mtk_gpio_request(struct gpio_chip *chip, unsigned offset)
-{
-	return pinctrl_request_gpio(chip->base + offset);
-}
-
-static void mtk_gpio_free(struct gpio_chip *chip, unsigned offset)
-{
-	pinctrl_free_gpio(chip->base + offset);
-}
-
 static int mtk_gpio_direction_input(struct gpio_chip *chip,
 					unsigned offset)
 {
@@ -1005,8 +995,8 @@ static int mtk_gpio_set_debounce(struct gpio_chip *chip, unsigned offset,
 
 static struct gpio_chip mtk_gpio_chip = {
 	.owner			= THIS_MODULE,
-	.request		= mtk_gpio_request,
-	.free			= mtk_gpio_free,
+	.request		= gpiochip_generic_request,
+	.free			= gpiochip_generic_free,
 	.direction_input	= mtk_gpio_direction_input,
 	.direction_output	= mtk_gpio_direction_output,
 	.get			= mtk_gpio_get,
diff --git a/drivers/pinctrl/nomadik/pinctrl-abx500.c b/drivers/pinctrl/nomadik/pinctrl-abx500.c
index 97681fa..b59fbb4 100644
--- a/drivers/pinctrl/nomadik/pinctrl-abx500.c
+++ b/drivers/pinctrl/nomadik/pinctrl-abx500.c
@@ -654,25 +654,11 @@ static inline void abx500_gpio_dbg_show_one(struct seq_file *s,
 #define abx500_gpio_dbg_show	NULL
 #endif
 
-static int abx500_gpio_request(struct gpio_chip *chip, unsigned offset)
-{
-	int gpio = chip->base + offset;
-
-	return pinctrl_request_gpio(gpio);
-}
-
-static void abx500_gpio_free(struct gpio_chip *chip, unsigned offset)
-{
-	int gpio = chip->base + offset;
-
-	pinctrl_free_gpio(gpio);
-}
-
 static struct gpio_chip abx500gpio_chip = {
 	.label			= "abx500-gpio",
 	.owner			= THIS_MODULE,
-	.request		= abx500_gpio_request,
-	.free			= abx500_gpio_free,
+	.request		= gpiochip_generic_request,
+	.free			= gpiochip_generic_free,
 	.direction_input	= abx500_gpio_direction_input,
 	.get			= abx500_gpio_get,
 	.direction_output	= abx500_gpio_direction_output,
diff --git a/drivers/pinctrl/nomadik/pinctrl-nomadik.c b/drivers/pinctrl/nomadik/pinctrl-nomadik.c
index 96cf039..eebfae0 100644
--- a/drivers/pinctrl/nomadik/pinctrl-nomadik.c
+++ b/drivers/pinctrl/nomadik/pinctrl-nomadik.c
@@ -884,24 +884,6 @@ static void nmk_gpio_latent_irq_handler(struct irq_desc *desc)
 
 /* I/O Functions */
 
-static int nmk_gpio_request(struct gpio_chip *chip, unsigned offset)
-{
-	/*
-	 * Map back to global GPIO space and request muxing, the direction
-	 * parameter does not matter for this controller.
-	 */
-	int gpio = chip->base + offset;
-
-	return pinctrl_request_gpio(gpio);
-}
-
-static void nmk_gpio_free(struct gpio_chip *chip, unsigned offset)
-{
-	int gpio = chip->base + offset;
-
-	pinctrl_free_gpio(gpio);
-}
-
 static int nmk_gpio_make_input(struct gpio_chip *chip, unsigned offset)
 {
 	struct nmk_gpio_chip *nmk_chip =
@@ -1267,8 +1249,8 @@ static int nmk_gpio_probe(struct platform_device *dev)
 	spin_lock_init(&nmk_chip->lock);
 
 	chip = &nmk_chip->chip;
-	chip->request = nmk_gpio_request;
-	chip->free = nmk_gpio_free;
+	chip->request = gpiochip_generic_request;
+	chip->free = gpiochip_generic_free;
 	chip->direction_input = nmk_gpio_make_input;
 	chip->get = nmk_gpio_get_input;
 	chip->direction_output = nmk_gpio_make_output;
diff --git a/drivers/pinctrl/pinctrl-adi2.c b/drivers/pinctrl/pinctrl-adi2.c
index f6be685..fd342df 100644
--- a/drivers/pinctrl/pinctrl-adi2.c
+++ b/drivers/pinctrl/pinctrl-adi2.c
@@ -713,16 +713,6 @@ static struct pinctrl_desc adi_pinmux_desc = {
 	.owner = THIS_MODULE,
 };
 
-static int adi_gpio_request(struct gpio_chip *chip, unsigned offset)
-{
-	return pinctrl_request_gpio(chip->base + offset);
-}
-
-static void adi_gpio_free(struct gpio_chip *chip, unsigned offset)
-{
-	pinctrl_free_gpio(chip->base + offset);
-}
-
 static int adi_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
 {
 	struct gpio_port *port;
@@ -994,8 +984,8 @@ static int adi_gpio_probe(struct platform_device *pdev)
 	port->chip.get			= adi_gpio_get_value;
 	port->chip.direction_output	= adi_gpio_direction_output;
 	port->chip.set			= adi_gpio_set_value;
-	port->chip.request		= adi_gpio_request;
-	port->chip.free			= adi_gpio_free;
+	port->chip.request		= gpiochip_generic_request,
+	port->chip.free			= gpiochip_generic_free,
 	port->chip.to_irq		= adi_gpio_to_irq;
 	if (pdata->port_gpio_base > 0)
 		port->chip.base		= pdata->port_gpio_base;
diff --git a/drivers/pinctrl/pinctrl-as3722.c b/drivers/pinctrl/pinctrl-as3722.c
index 4747e08..56af28b 100644
--- a/drivers/pinctrl/pinctrl-as3722.c
+++ b/drivers/pinctrl/pinctrl-as3722.c
@@ -536,21 +536,11 @@ static int as3722_gpio_to_irq(struct gpio_chip *chip, unsigned offset)
 	return as3722_irq_get_virq(as_pci->as3722, offset);
 }
 
-static int as3722_gpio_request(struct gpio_chip *chip, unsigned offset)
-{
-	return pinctrl_request_gpio(chip->base + offset);
-}
-
-static void as3722_gpio_free(struct gpio_chip *chip, unsigned offset)
-{
-	pinctrl_free_gpio(chip->base + offset);
-}
-
 static const struct gpio_chip as3722_gpio_chip = {
 	.label			= "as3722-gpio",
 	.owner			= THIS_MODULE,
-	.request		= as3722_gpio_request,
-	.free			= as3722_gpio_free,
+	.request		= gpiochip_generic_request,
+	.free			= gpiochip_generic_free,
 	.get			= as3722_gpio_get,
 	.set			= as3722_gpio_set,
 	.direction_input	= as3722_gpio_direction_input,
diff --git a/drivers/pinctrl/pinctrl-at91.c b/drivers/pinctrl/pinctrl-at91.c
index 7a828ae..0d2fc0c 100644
--- a/drivers/pinctrl/pinctrl-at91.c
+++ b/drivers/pinctrl/pinctrl-at91.c
@@ -1280,28 +1280,6 @@ static int at91_pinctrl_remove(struct platform_device *pdev)
 	return 0;
 }
 
-static int at91_gpio_request(struct gpio_chip *chip, unsigned offset)
-{
-	/*
-	 * Map back to global GPIO space and request muxing, the direction
-	 * parameter does not matter for this controller.
-	 */
-	int gpio = chip->base + offset;
-	int bank = chip->base / chip->ngpio;
-
-	dev_dbg(chip->dev, "%s:%d pio%c%d(%d)\n", __func__, __LINE__,
-		 'A' + bank, offset, gpio);
-
-	return pinctrl_request_gpio(gpio);
-}
-
-static void at91_gpio_free(struct gpio_chip *chip, unsigned offset)
-{
-	int gpio = chip->base + offset;
-
-	pinctrl_free_gpio(gpio);
-}
-
 static int at91_gpio_get_direction(struct gpio_chip *chip, unsigned offset)
 {
 	struct at91_gpio_chip *at91_gpio = to_at91_gpio_chip(chip);
@@ -1687,8 +1665,8 @@ static int at91_gpio_of_irq_setup(struct platform_device *pdev,
 
 /* This structure is replicated for each GPIO block allocated at probe time */
 static struct gpio_chip at91_gpio_template = {
-	.request		= at91_gpio_request,
-	.free			= at91_gpio_free,
+	.request		= gpiochip_generic_request,
+	.free			= gpiochip_generic_free,
 	.get_direction		= at91_gpio_get_direction,
 	.direction_input	= at91_gpio_direction_input,
 	.get			= at91_gpio_get,
diff --git a/drivers/pinctrl/pinctrl-coh901.c b/drivers/pinctrl/pinctrl-coh901.c
index 9c9b889..813eb7c 100644
--- a/drivers/pinctrl/pinctrl-coh901.c
+++ b/drivers/pinctrl/pinctrl-coh901.c
@@ -217,24 +217,6 @@ static inline struct u300_gpio *to_u300_gpio(struct gpio_chip *chip)
 	return container_of(chip, struct u300_gpio, chip);
 }
 
-static int u300_gpio_request(struct gpio_chip *chip, unsigned offset)
-{
-	/*
-	 * Map back to global GPIO space and request muxing, the direction
-	 * parameter does not matter for this controller.
-	 */
-	int gpio = chip->base + offset;
-
-	return pinctrl_request_gpio(gpio);
-}
-
-static void u300_gpio_free(struct gpio_chip *chip, unsigned offset)
-{
-	int gpio = chip->base + offset;
-
-	pinctrl_free_gpio(gpio);
-}
-
 static int u300_gpio_get(struct gpio_chip *chip, unsigned offset)
 {
 	struct u300_gpio *gpio = to_u300_gpio(chip);
@@ -417,8 +399,8 @@ int u300_gpio_config_set(struct gpio_chip *chip, unsigned offset,
 static struct gpio_chip u300_gpio_chip = {
 	.label			= "u300-gpio-chip",
 	.owner			= THIS_MODULE,
-	.request		= u300_gpio_request,
-	.free			= u300_gpio_free,
+	.request		= gpiochip_generic_request,
+	.free			= gpiochip_generic_free,
 	.get			= u300_gpio_get,
 	.set			= u300_gpio_set,
 	.direction_input	= u300_gpio_direction_input,
diff --git a/drivers/pinctrl/pinctrl-digicolor.c b/drivers/pinctrl/pinctrl-digicolor.c
index 11f8b83..38a7799 100644
--- a/drivers/pinctrl/pinctrl-digicolor.c
+++ b/drivers/pinctrl/pinctrl-digicolor.c
@@ -169,16 +169,6 @@ static struct pinmux_ops dc_pmxops = {
 	.gpio_request_enable	= dc_pmx_request_gpio,
 };
 
-static int dc_gpio_request(struct gpio_chip *chip, unsigned gpio)
-{
-	return pinctrl_request_gpio(chip->base + gpio);
-}
-
-static void dc_gpio_free(struct gpio_chip *chip, unsigned gpio)
-{
-	pinctrl_free_gpio(chip->base + gpio);
-}
-
 static int dc_gpio_direction_input(struct gpio_chip *chip, unsigned gpio)
 {
 	struct dc_pinmap *pmap = container_of(chip, struct dc_pinmap, chip);
@@ -255,8 +245,8 @@ static int dc_gpiochip_add(struct dc_pinmap *pmap, struct device_node *np)
 
 	chip->label		= DRIVER_NAME;
 	chip->dev		= pmap->dev;
-	chip->request		= dc_gpio_request;
-	chip->free		= dc_gpio_free;
+	chip->request		= gpiochip_generic_request;
+	chip->free		= gpiochip_generic_free;
 	chip->direction_input	= dc_gpio_direction_input;
 	chip->direction_output	= dc_gpio_direction_output;
 	chip->get		= dc_gpio_get;
diff --git a/drivers/pinctrl/pinctrl-pistachio.c b/drivers/pinctrl/pinctrl-pistachio.c
index 952b1c6..85c9046 100644
--- a/drivers/pinctrl/pinctrl-pistachio.c
+++ b/drivers/pinctrl/pinctrl-pistachio.c
@@ -1171,16 +1171,6 @@ static struct pinctrl_desc pistachio_pinctrl_desc = {
 	.confops = &pistachio_pinconf_ops,
 };
 
-static int pistachio_gpio_request(struct gpio_chip *chip, unsigned offset)
-{
-	return pinctrl_request_gpio(chip->base + offset);
-}
-
-static void pistachio_gpio_free(struct gpio_chip *chip, unsigned offset)
-{
-	pinctrl_free_gpio(chip->base + offset);
-}
-
 static int pistachio_gpio_get_direction(struct gpio_chip *chip, unsigned offset)
 {
 	struct pistachio_gpio_bank *bank = gc_to_bank(chip);
@@ -1332,8 +1322,8 @@ static void pistachio_gpio_irq_handler(struct irq_desc *desc)
 		.npins = _npins,					\
 		.gpio_chip = {						\
 			.label = "GPIO" #_bank,				\
-			.request = pistachio_gpio_request,		\
-			.free = pistachio_gpio_free,			\
+			.request = gpiochip_generic_request,		\
+			.free = gpiochip_generic_free,			\
 			.get_direction = pistachio_gpio_get_direction,	\
 			.direction_input = pistachio_gpio_direction_input, \
 			.direction_output = pistachio_gpio_direction_output, \
diff --git a/drivers/pinctrl/pinctrl-rockchip.c b/drivers/pinctrl/pinctrl-rockchip.c
index 3d020fd..a065112 100644
--- a/drivers/pinctrl/pinctrl-rockchip.c
+++ b/drivers/pinctrl/pinctrl-rockchip.c
@@ -1374,16 +1374,6 @@ static int rockchip_pinctrl_register(struct platform_device *pdev,
  * GPIO handling
  */
 
-static int rockchip_gpio_request(struct gpio_chip *chip, unsigned offset)
-{
-	return pinctrl_request_gpio(chip->base + offset);
-}
-
-static void rockchip_gpio_free(struct gpio_chip *chip, unsigned offset)
-{
-	pinctrl_free_gpio(chip->base + offset);
-}
-
 static void rockchip_gpio_set(struct gpio_chip *gc, unsigned offset, int value)
 {
 	struct rockchip_pin_bank *bank = gc_to_pin_bank(gc);
@@ -1461,8 +1451,8 @@ static int rockchip_gpio_to_irq(struct gpio_chip *gc, unsigned offset)
 }
 
 static const struct gpio_chip rockchip_gpiolib_chip = {
-	.request = rockchip_gpio_request,
-	.free = rockchip_gpio_free,
+	.request = gpiochip_generic_request,
+	.free = gpiochip_generic_free,
 	.set = rockchip_gpio_set,
 	.get = rockchip_gpio_get,
 	.direction_input = rockchip_gpio_direction_input,
diff --git a/drivers/pinctrl/pinctrl-st.c b/drivers/pinctrl/pinctrl-st.c
index 389526e..b58d3f2 100644
--- a/drivers/pinctrl/pinctrl-st.c
+++ b/drivers/pinctrl/pinctrl-st.c
@@ -742,16 +742,6 @@ static void st_gpio_direction(struct st_gpio_bank *bank,
 	}
 }
 
-static int st_gpio_request(struct gpio_chip *chip, unsigned offset)
-{
-	return pinctrl_request_gpio(chip->base + offset);
-}
-
-static void st_gpio_free(struct gpio_chip *chip, unsigned offset)
-{
-	pinctrl_free_gpio(chip->base + offset);
-}
-
 static int st_gpio_get(struct gpio_chip *chip, unsigned offset)
 {
 	struct st_gpio_bank *bank = gpio_chip_to_bank(chip);
@@ -1490,8 +1480,8 @@ static void st_gpio_irqmux_handler(struct irq_desc *desc)
 }
 
 static struct gpio_chip st_gpio_template = {
-	.request		= st_gpio_request,
-	.free			= st_gpio_free,
+	.request		= gpiochip_generic_request,
+	.free			= gpiochip_generic_free,
 	.get			= st_gpio_get,
 	.set			= st_gpio_set,
 	.direction_input	= st_gpio_direction_input,
diff --git a/drivers/pinctrl/pinctrl-xway.c b/drivers/pinctrl/pinctrl-xway.c
index 779950c..ae724bd 100644
--- a/drivers/pinctrl/pinctrl-xway.c
+++ b/drivers/pinctrl/pinctrl-xway.c
@@ -682,28 +682,14 @@ static int xway_gpio_dir_out(struct gpio_chip *chip, unsigned int pin, int val)
 	return 0;
 }
 
-static int xway_gpio_req(struct gpio_chip *chip, unsigned offset)
-{
-	int gpio = chip->base + offset;
-
-	return pinctrl_request_gpio(gpio);
-}
-
-static void xway_gpio_free(struct gpio_chip *chip, unsigned offset)
-{
-	int gpio = chip->base + offset;
-
-	pinctrl_free_gpio(gpio);
-}
-
 static struct gpio_chip xway_chip = {
 	.label = "gpio-xway",
 	.direction_input = xway_gpio_dir_in,
 	.direction_output = xway_gpio_dir_out,
 	.get = xway_gpio_get,
 	.set = xway_gpio_set,
-	.request = xway_gpio_req,
-	.free = xway_gpio_free,
+	.request = gpiochip_generic_request,
+	.free = gpiochip_generic_free,
 	.base = -1,
 };
 
diff --git a/drivers/pinctrl/qcom/pinctrl-msm.c b/drivers/pinctrl/qcom/pinctrl-msm.c
index a0c7407..146264a 100644
--- a/drivers/pinctrl/qcom/pinctrl-msm.c
+++ b/drivers/pinctrl/qcom/pinctrl-msm.c
@@ -458,18 +458,6 @@ static void msm_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
 	spin_unlock_irqrestore(&pctrl->lock, flags);
 }
 
-static int msm_gpio_request(struct gpio_chip *chip, unsigned offset)
-{
-	int gpio = chip->base + offset;
-	return pinctrl_request_gpio(gpio);
-}
-
-static void msm_gpio_free(struct gpio_chip *chip, unsigned offset)
-{
-	int gpio = chip->base + offset;
-	return pinctrl_free_gpio(gpio);
-}
-
 #ifdef CONFIG_DEBUG_FS
 #include <linux/seq_file.h>
 
@@ -527,8 +515,8 @@ static struct gpio_chip msm_gpio_template = {
 	.direction_output = msm_gpio_direction_output,
 	.get              = msm_gpio_get,
 	.set              = msm_gpio_set,
-	.request          = msm_gpio_request,
-	.free             = msm_gpio_free,
+	.request          = gpiochip_generic_request,
+	.free             = gpiochip_generic_free,
 	.dbg_show         = msm_gpio_dbg_show,
 };
 
diff --git a/drivers/pinctrl/qcom/pinctrl-spmi-gpio.c b/drivers/pinctrl/qcom/pinctrl-spmi-gpio.c
index bd1e245..6c42ca1 100644
--- a/drivers/pinctrl/qcom/pinctrl-spmi-gpio.c
+++ b/drivers/pinctrl/qcom/pinctrl-spmi-gpio.c
@@ -546,16 +546,6 @@ static void pmic_gpio_set(struct gpio_chip *chip, unsigned pin, int value)
 	pmic_gpio_config_set(state->ctrl, pin, &config, 1);
 }
 
-static int pmic_gpio_request(struct gpio_chip *chip, unsigned base)
-{
-	return pinctrl_request_gpio(chip->base + base);
-}
-
-static void pmic_gpio_free(struct gpio_chip *chip, unsigned base)
-{
-	pinctrl_free_gpio(chip->base + base);
-}
-
 static int pmic_gpio_of_xlate(struct gpio_chip *chip,
 			      const struct of_phandle_args *gpio_desc,
 			      u32 *flags)
@@ -595,8 +585,8 @@ static const struct gpio_chip pmic_gpio_gpio_template = {
 	.direction_output	= pmic_gpio_direction_output,
 	.get			= pmic_gpio_get,
 	.set			= pmic_gpio_set,
-	.request		= pmic_gpio_request,
-	.free			= pmic_gpio_free,
+	.request		= gpiochip_generic_request,
+	.free			= gpiochip_generic_free,
 	.of_xlate		= pmic_gpio_of_xlate,
 	.to_irq			= pmic_gpio_to_irq,
 	.dbg_show		= pmic_gpio_dbg_show,
diff --git a/drivers/pinctrl/qcom/pinctrl-spmi-mpp.c b/drivers/pinctrl/qcom/pinctrl-spmi-mpp.c
index e3be3ce..9ce0e30 100644
--- a/drivers/pinctrl/qcom/pinctrl-spmi-mpp.c
+++ b/drivers/pinctrl/qcom/pinctrl-spmi-mpp.c
@@ -604,16 +604,6 @@ static void pmic_mpp_set(struct gpio_chip *chip, unsigned pin, int value)
 	pmic_mpp_config_set(state->ctrl, pin, &config, 1);
 }
 
-static int pmic_mpp_request(struct gpio_chip *chip, unsigned base)
-{
-	return pinctrl_request_gpio(chip->base + base);
-}
-
-static void pmic_mpp_free(struct gpio_chip *chip, unsigned base)
-{
-	pinctrl_free_gpio(chip->base + base);
-}
-
 static int pmic_mpp_of_xlate(struct gpio_chip *chip,
 			     const struct of_phandle_args *gpio_desc,
 			     u32 *flags)
@@ -653,8 +643,8 @@ static const struct gpio_chip pmic_mpp_gpio_template = {
 	.direction_output	= pmic_mpp_direction_output,
 	.get			= pmic_mpp_get,
 	.set			= pmic_mpp_set,
-	.request		= pmic_mpp_request,
-	.free			= pmic_mpp_free,
+	.request		= gpiochip_generic_request,
+	.free			= gpiochip_generic_free,
 	.of_xlate		= pmic_mpp_of_xlate,
 	.to_irq			= pmic_mpp_to_irq,
 	.dbg_show		= pmic_mpp_dbg_show,
diff --git a/drivers/pinctrl/samsung/pinctrl-samsung.c b/drivers/pinctrl/samsung/pinctrl-samsung.c
index c760bf4..3f622cc 100644
--- a/drivers/pinctrl/samsung/pinctrl-samsung.c
+++ b/drivers/pinctrl/samsung/pinctrl-samsung.c
@@ -888,19 +888,9 @@ static int samsung_pinctrl_register(struct platform_device *pdev,
 	return 0;
 }
 
-static int samsung_gpio_request(struct gpio_chip *chip, unsigned offset)
-{
-	return pinctrl_request_gpio(chip->base + offset);
-}
-
-static void samsung_gpio_free(struct gpio_chip *chip, unsigned offset)
-{
-	pinctrl_free_gpio(chip->base + offset);
-}
-
 static const struct gpio_chip samsung_gpiolib_chip = {
-	.request = samsung_gpio_request,
-	.free = samsung_gpio_free,
+	.request = gpiochip_generic_request,
+	.free = gpiochip_generic_free,
 	.set = samsung_gpio_set,
 	.get = samsung_gpio_get,
 	.direction_input = samsung_gpio_direction_input,
diff --git a/drivers/pinctrl/sunxi/pinctrl-sunxi.c b/drivers/pinctrl/sunxi/pinctrl-sunxi.c
index 21fd638..dead97d 100644
--- a/drivers/pinctrl/sunxi/pinctrl-sunxi.c
+++ b/drivers/pinctrl/sunxi/pinctrl-sunxi.c
@@ -446,16 +446,6 @@ static const struct pinmux_ops sunxi_pmx_ops = {
 	.gpio_set_direction	= sunxi_pmx_gpio_set_direction,
 };
 
-static int sunxi_pinctrl_gpio_request(struct gpio_chip *chip, unsigned offset)
-{
-	return pinctrl_request_gpio(chip->base + offset);
-}
-
-static void sunxi_pinctrl_gpio_free(struct gpio_chip *chip, unsigned offset)
-{
-	pinctrl_free_gpio(chip->base + offset);
-}
-
 static int sunxi_pinctrl_gpio_direction_input(struct gpio_chip *chip,
 					unsigned offset)
 {
@@ -956,8 +946,8 @@ int sunxi_pinctrl_init(struct platform_device *pdev,
 
 	last_pin = pctl->desc->pins[pctl->desc->npins - 1].pin.number;
 	pctl->chip->owner = THIS_MODULE;
-	pctl->chip->request = sunxi_pinctrl_gpio_request,
-	pctl->chip->free = sunxi_pinctrl_gpio_free,
+	pctl->chip->request = gpiochip_generic_request,
+	pctl->chip->free = gpiochip_generic_free,
 	pctl->chip->direction_input = sunxi_pinctrl_gpio_direction_input,
 	pctl->chip->direction_output = sunxi_pinctrl_gpio_direction_output,
 	pctl->chip->get = sunxi_pinctrl_gpio_get,
diff --git a/drivers/pinctrl/vt8500/pinctrl-wmt.c b/drivers/pinctrl/vt8500/pinctrl-wmt.c
index c15316b..fb22d3f 100644
--- a/drivers/pinctrl/vt8500/pinctrl-wmt.c
+++ b/drivers/pinctrl/vt8500/pinctrl-wmt.c
@@ -486,16 +486,6 @@ static struct pinctrl_desc wmt_desc = {
 	.confops = &wmt_pinconf_ops,
 };
 
-static int wmt_gpio_request(struct gpio_chip *chip, unsigned offset)
-{
-	return pinctrl_request_gpio(chip->base + offset);
-}
-
-static void wmt_gpio_free(struct gpio_chip *chip, unsigned offset)
-{
-	pinctrl_free_gpio(chip->base + offset);
-}
-
 static int wmt_gpio_get_direction(struct gpio_chip *chip, unsigned offset)
 {
 	struct wmt_pinctrl_data *data = dev_get_drvdata(chip->dev);
@@ -560,8 +550,8 @@ static int wmt_gpio_direction_output(struct gpio_chip *chip, unsigned offset,
 static struct gpio_chip wmt_gpio_chip = {
 	.label = "gpio-wmt",
 	.owner = THIS_MODULE,
-	.request = wmt_gpio_request,
-	.free = wmt_gpio_free,
+	.request = gpiochip_generic_request,
+	.free = gpiochip_generic_free,
 	.get_direction = wmt_gpio_get_direction,
 	.direction_input = wmt_gpio_direction_input,
 	.direction_output = wmt_gpio_direction_output,