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, 2 insertions, 24 deletions

diff --git a/drivers/pinctrl/pinctrl-at91.c b/drivers/pinctrl/pinctrl-at91.c
index 7a828ae6716b..0d2fc0cff35e 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,