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
  ...

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,
 };
 

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,

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,