Merge tag 'gpio-v4.13-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio

Pull GPIO fixes from Linus Walleij:

 - LP87565: set the proper output level for direction_output.

 - stm32: fix the kernel build by selecting the hierarchical irqdomain
   symbol properly - this happens to be done in the pin control
   framework but whatever, it had dependencies to GPIO so we need to
   apply it here.

 - Select the hierarchical IRQ domain also for Xgene.

 - Fix wakeups to work on MXC.

 - Fix up the device tree binding on Exar that went astray, also add the
   right bindings.

 - Fix the unwanted events for edges from the library.

 - Fix the unbalanced chanined IRQ on the Tegra.

* tag 'gpio-v4.13-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio:
  gpio: tegra: fix unbalanced chained_irq_enter/exit
  gpiolib: skip unwanted events, don't convert them to opposite edge
  gpio: exar: Use correct property prefix and document bindings
  gpio: gpio-mxc: Fix: higher 16 GPIOs usable as wake source
  gpio: xgene-sb: select IRQ_DOMAIN_HIERARCHY
  pinctrl: stm32: select IRQ_DOMAIN_HIERARCHY instead of depends on
  gpio: lp87565: Set proper output level and direction for direction_output
  MAINTAINERS: Add entry for Whiskey Cove PMIC GPIO driver

Documentation/devicetree/bindings/gpio/gpio-exar.txt

@@ -0,0 +1,5 @@
+Exportable MPIO interface of Exar UART chips
+
+Required properties of the device:
+ - exar,first-pin: first exportable pins (0..15)
+ - ngpios: number of exportable pins (1..16)

MAINTAINERS

@@ -14218,6 +14218,12 @@ F:	drivers/watchdog/
 F:	include/linux/watchdog.h
 F:	include/uapi/linux/watchdog.h
 
+WHISKEYCOVE PMIC GPIO DRIVER
+M:	Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
+L:	linux-gpio@vger.kernel.org
+S:	Maintained
+F:	drivers/gpio/gpio-wcove.c
+
 WIIMOTE HID DRIVER
 M:	David Herrmann <dh.herrmann@googlemail.com>
 L:	linux-input@vger.kernel.org

drivers/gpio/Kconfig

@@ -504,6 +504,7 @@ config GPIO_XGENE_SB
 	depends on ARCH_XGENE && OF_GPIO
 	select GPIO_GENERIC
 	select GPIOLIB_IRQCHIP
+	select IRQ_DOMAIN_HIERARCHY
 	help
 	  This driver supports the GPIO block within the APM X-Gene
 	  Standby Domain. Say yes here to enable the GPIO functionality.

drivers/gpio/gpio-exar.c

@@ -132,7 +132,7 @@ static int gpio_exar_probe(struct platform_device *pdev)
 	if (!p)
 		return -ENOMEM;
 
-	ret = device_property_read_u32(&pdev->dev, "linux,first-pin",
+	ret = device_property_read_u32(&pdev->dev, "exar,first-pin",
 				       &first_pin);
 	if (ret)
 		return ret;

drivers/gpio/gpio-lp87565.c

@@ -26,6 +26,27 @@ struct lp87565_gpio {
 	struct regmap *map;
 };
 
+static int lp87565_gpio_get(struct gpio_chip *chip, unsigned int offset)
+{
+	struct lp87565_gpio *gpio = gpiochip_get_data(chip);
+	int ret, val;
+
+	ret = regmap_read(gpio->map, LP87565_REG_GPIO_IN, &val);
+	if (ret < 0)
+		return ret;
+
+	return !!(val & BIT(offset));
+}
+
+static void lp87565_gpio_set(struct gpio_chip *chip, unsigned int offset,
+			     int value)
+{
+	struct lp87565_gpio *gpio = gpiochip_get_data(chip);
+
+	regmap_update_bits(gpio->map, LP87565_REG_GPIO_OUT,
+			   BIT(offset), value ? BIT(offset) : 0);
+}
+
 static int lp87565_gpio_get_direction(struct gpio_chip *chip,
 				      unsigned int offset)
 {
@@ -54,30 +75,11 @@ static int lp87565_gpio_direction_output(struct gpio_chip *chip,
 {
 	struct lp87565_gpio *gpio = gpiochip_get_data(chip);
 
+	lp87565_gpio_set(chip, offset, value);
+
 	return regmap_update_bits(gpio->map,
 				  LP87565_REG_GPIO_CONFIG,
-				  BIT(offset), !value ? BIT(offset) : 0);
+				  BIT(offset), BIT(offset));
-}
-
-static int lp87565_gpio_get(struct gpio_chip *chip, unsigned int offset)
-{
-	struct lp87565_gpio *gpio = gpiochip_get_data(chip);
-	int ret, val;
-
-	ret = regmap_read(gpio->map, LP87565_REG_GPIO_IN, &val);
-	if (ret < 0)
-		return ret;
-
-	return !!(val & BIT(offset));
-}
-
-static void lp87565_gpio_set(struct gpio_chip *chip, unsigned int offset,
-			     int value)
-{
-	struct lp87565_gpio *gpio = gpiochip_get_data(chip);
-
-	regmap_update_bits(gpio->map, LP87565_REG_GPIO_OUT,
-			   BIT(offset), value ? BIT(offset) : 0);
 }
 
 static int lp87565_gpio_request(struct gpio_chip *gc, unsigned int offset)

drivers/gpio/gpio-mxc.c

@@ -424,6 +424,9 @@ static int mxc_gpio_probe(struct platform_device *pdev)
 		return PTR_ERR(port->base);
 
 	port->irq_high = platform_get_irq(pdev, 1);
+	if (port->irq_high < 0)
+		port->irq_high = 0;
+
 	port->irq = platform_get_irq(pdev, 0);
 	if (port->irq < 0)
 		return port->irq;

drivers/gpio/gpio-tegra.c

@@ -360,7 +360,7 @@ static void tegra_gpio_irq_handler(struct irq_desc *desc)
 {
 	int port;
 	int pin;
-	int unmasked = 0;
+	bool unmasked = false;
 	int gpio;
 	u32 lvl;
 	unsigned long sta;
@@ -384,8 +384,8 @@ static void tegra_gpio_irq_handler(struct irq_desc *desc)
 			 * before executing the handler so that we don't
 			 * miss edges
 			 */
-			if (lvl & (0x100 << pin)) {
+			if (!unmasked && lvl & (0x100 << pin)) {
-				unmasked = 1;
+				unmasked = true;
 				chained_irq_exit(chip, desc);
 			}
 

drivers/gpio/gpiolib.c

@@ -704,24 +704,23 @@ static irqreturn_t lineevent_irq_thread(int irq, void *p)
 {
 	struct lineevent_state *le = p;
 	struct gpioevent_data ge;
-	int ret;
+	int ret, level;
 
 	ge.timestamp = ktime_get_real_ns();
+	level = gpiod_get_value_cansleep(le->desc);
 
 	if (le->eflags & GPIOEVENT_REQUEST_RISING_EDGE
 	    && le->eflags & GPIOEVENT_REQUEST_FALLING_EDGE) {
-		int level = gpiod_get_value_cansleep(le->desc);
-
 		if (level)
 			/* Emit low-to-high event */
 			ge.id = GPIOEVENT_EVENT_RISING_EDGE;
 		else
 			/* Emit high-to-low event */
 			ge.id = GPIOEVENT_EVENT_FALLING_EDGE;
-	} else if (le->eflags & GPIOEVENT_REQUEST_RISING_EDGE) {
+	} else if (le->eflags & GPIOEVENT_REQUEST_RISING_EDGE && level) {
 		/* Emit low-to-high event */
 		ge.id = GPIOEVENT_EVENT_RISING_EDGE;
-	} else if (le->eflags & GPIOEVENT_REQUEST_FALLING_EDGE) {
+	} else if (le->eflags & GPIOEVENT_REQUEST_FALLING_EDGE && !level) {
 		/* Emit high-to-low event */
 		ge.id = GPIOEVENT_EVENT_FALLING_EDGE;
 	} else {

drivers/pinctrl/stm32/Kconfig

@@ -6,29 +6,30 @@ config PINCTRL_STM32
 	select PINMUX
 	select GENERIC_PINCONF
 	select GPIOLIB
+	select IRQ_DOMAIN_HIERARCHY
 	select MFD_SYSCON
 
 config PINCTRL_STM32F429
 	bool "STMicroelectronics STM32F429 pin control" if COMPILE_TEST && !MACH_STM32F429
-	depends on OF && IRQ_DOMAIN_HIERARCHY
+	depends on OF
 	default MACH_STM32F429
 	select PINCTRL_STM32
 
 config PINCTRL_STM32F469
 	bool "STMicroelectronics STM32F469 pin control" if COMPILE_TEST && !MACH_STM32F469
-	depends on OF && IRQ_DOMAIN_HIERARCHY
+	depends on OF
 	default MACH_STM32F469
 	select PINCTRL_STM32
 
 config PINCTRL_STM32F746
 	bool "STMicroelectronics STM32F746 pin control" if COMPILE_TEST && !MACH_STM32F746
-	depends on OF && IRQ_DOMAIN_HIERARCHY
+	depends on OF
 	default MACH_STM32F746
 	select PINCTRL_STM32
 
 config PINCTRL_STM32H743
 	bool "STMicroelectronics STM32H743 pin control" if COMPILE_TEST && !MACH_STM32H743
-	depends on OF && IRQ_DOMAIN_HIERARCHY
+	depends on OF
 	default MACH_STM32H743
 	select PINCTRL_STM32
 endif

drivers/tty/serial/8250/8250_exar.c

@@ -261,7 +261,7 @@ __xr17v35x_register_gpio(struct pci_dev *pcidev,
 }
 
 static const struct property_entry exar_gpio_properties[] = {
-	PROPERTY_ENTRY_U32("linux,first-pin", 0),
+	PROPERTY_ENTRY_U32("exar,first-pin", 0),
 	PROPERTY_ENTRY_U32("ngpios", 16),
 	{ }
 };
@@ -326,7 +326,7 @@ static int iot2040_rs485_config(struct uart_port *port,
 }
 
 static const struct property_entry iot2040_gpio_properties[] = {
-	PROPERTY_ENTRY_U32("linux,first-pin", 10),
+	PROPERTY_ENTRY_U32("exar,first-pin", 10),
 	PROPERTY_ENTRY_U32("ngpios", 1),
 	{ }
 };