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
  ...

1 files changed, 4 insertions, 24 deletions

diff --git a/drivers/gpio/gpio-zx.c b/drivers/gpio/gpio-zx.c
index 4b8a26910705..1dcf7a66dd36 100644
--- a/drivers/gpio/gpio-zx.c
+++ b/drivers/gpio/gpio-zx.c
@@ -41,7 +41,6 @@ struct zx_gpio {
 
 	void __iomem		*base;
 	struct gpio_chip	gc;
-	bool			uses_pinctrl;
 };
 
 static inline struct zx_gpio *to_zx(struct gpio_chip *gc)
@@ -49,25 +48,6 @@ static inline struct zx_gpio *to_zx(struct gpio_chip *gc)
 	return container_of(gc, struct zx_gpio, gc);
 }
 
-static int zx_gpio_request(struct gpio_chip *gc, unsigned offset)
-{
-	struct zx_gpio *chip = to_zx(gc);
-	int gpio = gc->base + offset;
-
-	if (chip->uses_pinctrl)
-		return pinctrl_request_gpio(gpio);
-	return 0;
-}
-
-static void zx_gpio_free(struct gpio_chip *gc, unsigned offset)
-{
-	struct zx_gpio *chip = to_zx(gc);
-	int gpio = gc->base + offset;
-
-	if (chip->uses_pinctrl)
-		pinctrl_free_gpio(gpio);
-}
-
 static int zx_direction_input(struct gpio_chip *gc, unsigned offset)
 {
 	struct zx_gpio *chip = to_zx(gc);
@@ -252,12 +232,12 @@ static int zx_gpio_probe(struct platform_device *pdev)
 		return PTR_ERR(chip->base);
 
 	spin_lock_init(&chip->lock);
-	if (of_property_read_bool(dev->of_node, "gpio-ranges"))
-		chip->uses_pinctrl = true;
+	if (of_property_read_bool(dev->of_node, "gpio-ranges")) {
+		chip->gc.request = gpiochip_generic_request;
+		chip->gc.free = gpiochip_generic_free;
+	}
 
 	id = of_alias_get_id(dev->of_node, "gpio");
-	chip->gc.request = zx_gpio_request;
-	chip->gc.free = zx_gpio_free;
 	chip->gc.direction_input = zx_direction_input;
 	chip->gc.direction_output = zx_direction_output;
 	chip->gc.get = zx_get_value;