Merge branch 'devel' into for-next

Documentation/devicetree/bindings/gpio/gpio-pca953x.txt

@@ -19,6 +19,7 @@ Required properties:
 	nxp,pca9698
 	nxp,pcal6416
 	nxp,pcal6524
+	nxp,pcal9535
 	nxp,pcal9555a
 	maxim,max7310
 	maxim,max7312

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

@@ -6,7 +6,9 @@ Required properties:
 			  - First cell is the GPIO line number
 			  - Second cell is used to specify optional
 			    parameters (unused)
-- compatible		: Should be "xlnx,zynq-gpio-1.0" or "xlnx,zynqmp-gpio-1.0"
+- compatible		: Should be "xlnx,zynq-gpio-1.0" or
+			  "xlnx,zynqmp-gpio-1.0" or "xlnx,versal-gpio-1.0
+			  or "xlnx,pmc-gpio-1.0
 - clocks		: Clock specifier (see clock bindings for details)
 - gpio-controller	: Marks the device node as a GPIO controller.
 - interrupts		: Interrupt specifier (see interrupt bindings for

Documentation/driver-api/gpio/drivers-on-gpio.rst

@@ -89,6 +89,13 @@ hardware descriptions such as device tree or ACPI:
   Consumer Electronics Control bus using only GPIO. It is used to communicate
   with devices on the HDMI bus.
 
+- gpio-charger: drivers/power/supply/gpio-charger.c is used if you need to do
+  battery charging and all you have to go by to check the presence of the
+  AC charger or more complex tasks such as indicating charging status using
+  nothing but GPIO lines, this driver provides that and also a clearly defined
+  way to pass the charging parameters from hardware descriptions such as the
+  device tree.
+
 Apart from this there are special GPIO drivers in subsystems like MMC/SD to
 read card detect and write protect GPIO lines, and in the TTY serial subsystem
 to emulate MCTRL (modem control) signals CTS/RTS by using two GPIO lines. The

arch/arm/plat-orion/gpio.c

@@ -442,6 +442,7 @@ static void orion_gpio_dbg_show(struct seq_file *s, struct gpio_chip *chip)
 
 	struct orion_gpio_chip *ochip = gpiochip_get_data(chip);
 	u32 out, io_conf, blink, in_pol, data_in, cause, edg_msk, lvl_msk;
+	const char *label;
 	int i;
 
 	out	= readl_relaxed(GPIO_OUT(ochip));
@@ -453,15 +454,10 @@ static void orion_gpio_dbg_show(struct seq_file *s, struct gpio_chip *chip)
 	edg_msk	= readl_relaxed(GPIO_EDGE_MASK(ochip));
 	lvl_msk	= readl_relaxed(GPIO_LEVEL_MASK(ochip));
 
-	for (i = 0; i < chip->ngpio; i++) {
-		const char *label;
+	for_each_requested_gpio(chip, i, label) {
 		u32 msk;
 		bool is_out;
 
-		label = gpiochip_is_requested(chip, i);
-		if (!label)
-			continue;
-
 		msk = 1 << i;
 		is_out = !(io_conf & msk);
 

drivers/gpio/Kconfig

@@ -410,7 +410,7 @@ config GPIO_MXS
 
 config GPIO_OCTEON
 	tristate "Cavium OCTEON GPIO"
-	depends on GPIOLIB && CAVIUM_OCTEON_SOC
+	depends on CAVIUM_OCTEON_SOC
 	default y
 	help
 	  Say yes here to support the on-chip GPIO lines on the OCTEON
@@ -1117,7 +1117,7 @@ config GPIO_DLN2
 
 config HTC_EGPIO
 	bool "HTC EGPIO support"
-	depends on GPIOLIB && ARM
+	depends on ARM
 	help
 	  This driver supports the CPLD egpio chip present on
 	  several HTC phones.  It provides basic support for input

drivers/gpio/Makefile

@@ -7,6 +7,7 @@ obj-$(CONFIG_GPIOLIB)		+= gpiolib.o
 obj-$(CONFIG_GPIOLIB)		+= gpiolib-devres.o
 obj-$(CONFIG_GPIOLIB)		+= gpiolib-legacy.o
 obj-$(CONFIG_GPIOLIB)		+= gpiolib-devprop.o
+obj-$(CONFIG_GPIOLIB)		+= gpiolib-cdev.o
 obj-$(CONFIG_OF_GPIO)		+= gpiolib-of.o
 obj-$(CONFIG_GPIO_SYSFS)	+= gpiolib-sysfs.o
 obj-$(CONFIG_GPIO_ACPI)		+= gpiolib-acpi.o

drivers/gpio/TODO

@@ -5,7 +5,7 @@ subsystem.
 GPIO descriptors
 
 Starting with commit 79a9becda894 the GPIO subsystem embarked on a journey
-to move away from the global GPIO numberspace and toward a decriptor-based
+to move away from the global GPIO numberspace and toward a descriptor-based
 approach. This means that GPIO consumers, drivers and machine descriptions
 ideally have no use or idea of the global GPIO numberspace that has/was
 used in the inception of the GPIO subsystem.

drivers/gpio/gpio-aggregator.c

@@ -10,6 +10,7 @@
 #include <linux/bitmap.h>
 #include <linux/bitops.h>
 #include <linux/ctype.h>
+#include <linux/gpio.h>
 #include <linux/gpio/consumer.h>
 #include <linux/gpio/driver.h>
 #include <linux/gpio/machine.h>
@@ -38,9 +39,9 @@ static DEFINE_IDR(gpio_aggregator_idr);
 
 static char *get_arg(char **args)
 {
-	char *start = *args, *end;
+	char *start, *end;
 
-	start = skip_spaces(start);
+	start = skip_spaces(*args);
 	if (!*start)
 		return NULL;
 
@@ -111,55 +112,45 @@ static int aggr_add_gpio(struct gpio_aggregator *aggr, const char *key,
 
 static int aggr_parse(struct gpio_aggregator *aggr)
 {
-	unsigned int first_index, last_index, i, n = 0;
-	char *name, *offsets, *first, *last, *next;
 	char *args = aggr->args;
-	int error;
+	unsigned long *bitmap;
+	unsigned int i, n = 0;
+	char *name, *offsets;
+	int error = 0;
+
+	bitmap = bitmap_alloc(ARCH_NR_GPIOS, GFP_KERNEL);
+	if (!bitmap)
+		return -ENOMEM;
 
 	for (name = get_arg(&args), offsets = get_arg(&args); name;
 	     offsets = get_arg(&args)) {
 		if (IS_ERR(name)) {
 			pr_err("Cannot get GPIO specifier: %pe\n", name);
-			return PTR_ERR(name);
+			error = PTR_ERR(name);
+			goto free_bitmap;
 		}
 
 		if (!isrange(offsets)) {
 			/* Named GPIO line */
 			error = aggr_add_gpio(aggr, name, U16_MAX, &n);
 			if (error)
-				return error;
+				goto free_bitmap;
 
 			name = offsets;
 			continue;
 		}
 
 		/* GPIO chip + offset(s) */
-		for (first = offsets; *first; first = next) {
-			next = strchrnul(first, ',');
-			if (*next)
-				*next++ = '\0';
-
-			last = strchr(first, '-');
-			if (last)
-				*last++ = '\0';
-
-			if (kstrtouint(first, 10, &first_index)) {
-				pr_err("Cannot parse GPIO index %s\n", first);
-				return -EINVAL;
-			}
-
-			if (!last) {
-				last_index = first_index;
-			} else if (kstrtouint(last, 10, &last_index)) {
-				pr_err("Cannot parse GPIO index %s\n", last);
-				return -EINVAL;
-			}
-
-			for (i = first_index; i <= last_index; i++) {
-				error = aggr_add_gpio(aggr, name, i, &n);
-				if (error)
-					return error;
-			}
+		error = bitmap_parselist(offsets, bitmap, ARCH_NR_GPIOS);
+		if (error) {
+			pr_err("Cannot parse %s: %d\n", offsets, error);
+			goto free_bitmap;
+		}
+
+		for_each_set_bit(i, bitmap, ARCH_NR_GPIOS) {
+			error = aggr_add_gpio(aggr, name, i, &n);
+			if (error)
+				goto free_bitmap;
 		}
 
 		name = get_arg(&args);
@@ -167,10 +158,12 @@ static int aggr_parse(struct gpio_aggregator *aggr)
 
 	if (!n) {
 		pr_err("No GPIOs specified\n");
-		return -EINVAL;
+		error = -EINVAL;
 	}
 
-	return 0;
+free_bitmap:
+	bitmap_free(bitmap);
+	return error;
 }
 
 static ssize_t new_device_store(struct device_driver *driver, const char *buf,

drivers/gpio/gpio-altera.c

@@ -24,6 +24,7 @@
 * @interrupt_trigger	: specifies the hardware configured IRQ trigger type
 *			  (rising, falling, both, high)
 * @mapped_irq		: kernel mapped irq number.
+* @irq_chip		: IRQ chip configuration
 */
 struct altera_gpio_chip {
 	struct of_mm_gpio_chip mmchip;
@@ -69,7 +70,7 @@ static void altera_gpio_irq_mask(struct irq_data *d)
 	raw_spin_unlock_irqrestore(&altera_gc->gpio_lock, flags);
 }
 
-/**
+/*
  * This controller's IRQ type is synthesized in hardware, so this function
  * just checks if the requested set_type matches the synthesized IRQ type
  */

drivers/gpio/gpio-it87.c

@@ -47,13 +47,13 @@
 
 /**
  * struct it87_gpio - it87-specific GPIO chip
- * @chip the underlying gpio_chip structure
- * @lock a lock to avoid races between operations
- * @io_base base address for gpio ports
- * @io_size size of the port rage starting from io_base.
- * @output_base Super I/O register address for Output Enable register
- * @simple_base Super I/O 'Simple I/O' Enable register
- * @simple_size Super IO 'Simple I/O' Enable register size; this is
+ * @chip: the underlying gpio_chip structure
+ * @lock: a lock to avoid races between operations
+ * @io_base: base address for gpio ports
+ * @io_size: size of the port rage starting from io_base.
+ * @output_base: Super I/O register address for Output Enable register
+ * @simple_base: Super I/O 'Simple I/O' Enable register
+ * @simple_size: Super IO 'Simple I/O' Enable register size; this is
  *	required because IT87xx chips might only provide Simple I/O
  *	switches on a subset of lines, whereas the others keep the
  *	same status all time.

drivers/gpio/gpio-max732x.c

@@ -703,7 +703,7 @@ static int max732x_probe(struct i2c_client *client,
 	if (ret)
 		return ret;
 
-	if (pdata && pdata->setup) {
+	if (pdata->setup) {
 		ret = pdata->setup(client, chip->gpio_chip.base,
 				chip->gpio_chip.ngpio, pdata->context);
 		if (ret < 0)

drivers/gpio/gpio-mlxbf.c

@@ -127,7 +127,7 @@ static int mlxbf_gpio_resume(struct platform_device *pdev)
 }
 #endif
 
-static const struct acpi_device_id mlxbf_gpio_acpi_match[] = {
+static const struct acpi_device_id __maybe_unused mlxbf_gpio_acpi_match[] = {
 	{ "MLNXBF02", 0 },
 	{}
 };

drivers/gpio/gpio-mlxbf2.c

@@ -149,6 +149,8 @@ static int mlxbf2_gpio_lock_acquire(struct mlxbf2_gpio_context *gs)
  * Release the YU arm_gpio_lock after changing the direction mode.
  */
 static void mlxbf2_gpio_lock_release(struct mlxbf2_gpio_context *gs)
+	__releases(&gs->gc.bgpio_lock)
+	__releases(yu_arm_gpio_lock_param.lock)
 {
 	writel(YU_ARM_GPIO_LOCK_RELEASE, yu_arm_gpio_lock_param.io);
 	spin_unlock(&gs->gc.bgpio_lock);
@@ -309,7 +311,7 @@ static int mlxbf2_gpio_resume(struct platform_device *pdev)
 }
 #endif
 
-static const struct acpi_device_id mlxbf2_gpio_acpi_match[] = {
+static const struct acpi_device_id __maybe_unused mlxbf2_gpio_acpi_match[] = {
 	{ "MLNXBF22", 0 },
 	{},
 };

drivers/gpio/gpio-mpc8xxx.c

@@ -417,7 +417,7 @@ static int mpc8xxx_probe(struct platform_device *pdev)
 
 	ret = devm_request_irq(&pdev->dev, mpc8xxx_gc->irqn,
 			       mpc8xxx_gpio_irq_cascade,
-			       IRQF_NO_THREAD | IRQF_SHARED, "gpio-cascade",
+			       IRQF_SHARED, "gpio-cascade",
 			       mpc8xxx_gc);
 	if (ret) {
 		dev_err(&pdev->dev, "%s: failed to devm_request_irq(%d), ret = %d\n",

drivers/gpio/gpio-mvebu.c

@@ -846,6 +846,7 @@ static void mvebu_gpio_dbg_show(struct seq_file *s, struct gpio_chip *chip)
 {
 	struct mvebu_gpio_chip *mvchip = gpiochip_get_data(chip);
 	u32 out, io_conf, blink, in_pol, data_in, cause, edg_msk, lvl_msk;
+	const char *label;
 	int i;
 
 	regmap_read(mvchip->regs, GPIO_OUT_OFF + mvchip->offset, &out);
@@ -857,15 +858,10 @@ static void mvebu_gpio_dbg_show(struct seq_file *s, struct gpio_chip *chip)
 	edg_msk	= mvebu_gpio_read_edge_mask(mvchip);
 	lvl_msk	= mvebu_gpio_read_level_mask(mvchip);
 
-	for (i = 0; i < chip->ngpio; i++) {
-		const char *label;
+	for_each_requested_gpio(chip, i, label) {
 		u32 msk;
 		bool is_out;
 
-		label = gpiochip_is_requested(chip, i);
-		if (!label)
-			continue;
-
 		msk = BIT(i);
 		is_out = !(io_conf & msk);
 

drivers/gpio/gpio-omap.c

@@ -60,6 +60,7 @@ struct gpio_bank {
 	struct clk *dbck;
 	struct notifier_block nb;
 	unsigned int is_suspended:1;
+	unsigned int needs_resume:1;
 	u32 mod_usage;
 	u32 irq_usage;
 	u32 dbck_enable_mask;
@@ -1504,9 +1505,34 @@ static int __maybe_unused omap_gpio_runtime_resume(struct device *dev)
 	return 0;
 }
 
+static int omap_gpio_suspend(struct device *dev)
+{
+	struct gpio_bank *bank = dev_get_drvdata(dev);
+
+	if (bank->is_suspended)
+		return 0;
+
+	bank->needs_resume = 1;
+
+	return omap_gpio_runtime_suspend(dev);
+}
+
+static int omap_gpio_resume(struct device *dev)
+{
+	struct gpio_bank *bank = dev_get_drvdata(dev);
+
+	if (!bank->needs_resume)
+		return 0;
+
+	bank->needs_resume = 0;
+
+	return omap_gpio_runtime_resume(dev);
+}
+
 static const struct dev_pm_ops gpio_pm_ops = {
 	SET_RUNTIME_PM_OPS(omap_gpio_runtime_suspend, omap_gpio_runtime_resume,
 									NULL)
+	SET_LATE_SYSTEM_SLEEP_PM_OPS(omap_gpio_suspend, omap_gpio_resume)
 };
 
 static struct platform_driver omap_gpio_driver = {

drivers/gpio/gpio-pca953x.c

@@ -89,6 +89,7 @@ static const struct i2c_device_id pca953x_id[] = {
 
 	{ "pcal6416", 16 | PCA953X_TYPE | PCA_LATCH_INT, },
 	{ "pcal6524", 24 | PCA953X_TYPE | PCA_LATCH_INT, },
+	{ "pcal9535", 16 | PCA953X_TYPE | PCA_LATCH_INT, },
 	{ "pcal9555a", 16 | PCA953X_TYPE | PCA_LATCH_INT, },
 
 	{ "max7310", 8  | PCA953X_TYPE, },
@@ -1234,6 +1235,7 @@ static const struct of_device_id pca953x_dt_ids[] = {
 
 	{ .compatible = "nxp,pcal6416", .data = OF_953X(16, PCA_LATCH_INT), },
 	{ .compatible = "nxp,pcal6524", .data = OF_953X(24, PCA_LATCH_INT), },
+	{ .compatible = "nxp,pcal9535", .data = OF_953X(16, PCA_LATCH_INT), },
 	{ .compatible = "nxp,pcal9555a", .data = OF_953X(16, PCA_LATCH_INT), },
 
 	{ .compatible = "maxim,max7310", .data = OF_953X( 8, 0), },

drivers/gpio/gpio-pmic-eic-sprd.c

@@ -48,7 +48,7 @@ enum {
  * struct sprd_pmic_eic - PMIC EIC controller
  * @chip: the gpio_chip structure.
  * @intc: the irq_chip structure.
- * @regmap: the regmap from the parent device.
+ * @map:  the regmap from the parent device.
  * @offset: the EIC controller's offset address of the PMIC.
  * @reg: the array to cache the EIC registers.
  * @buslock: for bus lock/sync and unlock.

drivers/gpio/gpio-sama5d2-piobu.c

@@ -49,7 +49,7 @@ struct sama5d2_piobu {
 	struct regmap *regmap;
 };
 
-/**
+/*
  * sama5d2_piobu_setup_pin() - prepares a pin for set_direction call
  *
  * Do not consider pin for tamper detection (normal and backup modes)
@@ -73,7 +73,7 @@ static int sama5d2_piobu_setup_pin(struct gpio_chip *chip, unsigned int pin)
 	return regmap_update_bits(piobu->regmap, PIOBU_WKPR, mask, 0);
 }
 
-/**
+/*
  * sama5d2_piobu_write_value() - writes value & mask at the pin's PIOBU register
  */
 static int sama5d2_piobu_write_value(struct gpio_chip *chip, unsigned int pin,
@@ -88,7 +88,7 @@ static int sama5d2_piobu_write_value(struct gpio_chip *chip, unsigned int pin,
 	return regmap_update_bits(piobu->regmap, reg, mask, value);
 }
 
-/**
+/*
  * sama5d2_piobu_read_value() - read the value with masking from the pin's PIOBU
  *			      register
  */
@@ -108,7 +108,7 @@ static int sama5d2_piobu_read_value(struct gpio_chip *chip, unsigned int pin,
 	return val & mask;
 }
 
-/**
+/*
  * sama5d2_piobu_get_direction() - gpiochip get_direction
  */
 static int sama5d2_piobu_get_direction(struct gpio_chip *chip,
@@ -123,7 +123,7 @@ static int sama5d2_piobu_get_direction(struct gpio_chip *chip,
 				   GPIO_LINE_DIRECTION_OUT;
 }
 
-/**
+/*
  * sama5d2_piobu_direction_input() - gpiochip direction_input
  */
 static int sama5d2_piobu_direction_input(struct gpio_chip *chip,
@@ -132,7 +132,7 @@ static int sama5d2_piobu_direction_input(struct gpio_chip *chip,
 	return sama5d2_piobu_write_value(chip, pin, PIOBU_DIRECTION, PIOBU_IN);
 }
 
-/**
+/*
  * sama5d2_piobu_direction_output() - gpiochip direction_output
  */
 static int sama5d2_piobu_direction_output(struct gpio_chip *chip,
@@ -147,7 +147,7 @@ static int sama5d2_piobu_direction_output(struct gpio_chip *chip,
 					 val);
 }
 
-/**
+/*
  * sama5d2_piobu_get() - gpiochip get
  */
 static int sama5d2_piobu_get(struct gpio_chip *chip, unsigned int pin)
@@ -166,7 +166,7 @@ static int sama5d2_piobu_get(struct gpio_chip *chip, unsigned int pin)
 	return !!ret;
 }
 
-/**
+/*
  * sama5d2_piobu_set() - gpiochip set
  */
 static void sama5d2_piobu_set(struct gpio_chip *chip, unsigned int pin,

drivers/gpio/gpio-syscon.c

@@ -24,16 +24,16 @@
 
 /**
  * struct syscon_gpio_data - Configuration for the device.
- * compatible:		SYSCON driver compatible string.
- * flags:		Set of GPIO_SYSCON_FEAT_ flags:
+ * @compatible:		SYSCON driver compatible string.
+ * @flags:		Set of GPIO_SYSCON_FEAT_ flags:
  *			GPIO_SYSCON_FEAT_IN:	GPIOs supports input,
  *			GPIO_SYSCON_FEAT_OUT:	GPIOs supports output,
  *			GPIO_SYSCON_FEAT_DIR:	GPIOs supports switch direction.
- * bit_count:		Number of bits used as GPIOs.
- * dat_bit_offset:	Offset (in bits) to the first GPIO bit.
- * dir_bit_offset:	Optional offset (in bits) to the first bit to switch
+ * @bit_count:		Number of bits used as GPIOs.
+ * @dat_bit_offset:	Offset (in bits) to the first GPIO bit.
+ * @dir_bit_offset:	Optional offset (in bits) to the first bit to switch
  *			GPIO direction (Used with GPIO_SYSCON_FEAT_DIR flag).
- * set:		HW specific callback to assigns output value
+ * @set:		HW specific callback to assigns output value
  *			for signal "offset"
  */
 

drivers/gpio/gpio-xra1403.c

@@ -121,6 +121,7 @@ static void xra1403_dbg_show(struct seq_file *s, struct gpio_chip *chip)
 	struct xra1403 *xra = gpiochip_get_data(chip);
 	int value[XRA_LAST];
 	int i;
+	const char *label;
 	unsigned int gcr;
 	unsigned int gsr;
 
@@ -136,12 +137,7 @@ static void xra1403_dbg_show(struct seq_file *s, struct gpio_chip *chip)
 
 	gcr = value[XRA_GCR + 1] << 8 | value[XRA_GCR];
 	gsr = value[XRA_GSR + 1] << 8 | value[XRA_GSR];
-	for (i = 0; i < chip->ngpio; i++) {
-		const char *label = gpiochip_is_requested(chip, i);
-
-		if (!label)
-			continue;
-
+	for_each_requested_gpio(chip, i, label) {
 		seq_printf(s, " gpio-%-3d (%-12s) %s %s\n",
 			   chip->base + i, label,
 			   (gcr & BIT(i)) ? "in" : "out",

drivers/gpio/gpio-zynq.c

@@ -10,6 +10,7 @@
 #include <linux/gpio/driver.h>
 #include <linux/init.h>
 #include <linux/interrupt.h>
+#include <linux/spinlock.h>
 #include <linux/io.h>
 #include <linux/module.h>
 #include <linux/platform_device.h>
@@ -21,6 +22,9 @@
 /* Maximum banks */
 #define ZYNQ_GPIO_MAX_BANK	4
 #define ZYNQMP_GPIO_MAX_BANK	6
+#define VERSAL_GPIO_MAX_BANK	4
+#define PMC_GPIO_MAX_BANK	5
+#define VERSAL_UNUSED_BANKS	2
 
 #define ZYNQ_GPIO_BANK0_NGPIO	32
 #define ZYNQ_GPIO_BANK1_NGPIO	22
@@ -95,6 +99,7 @@
 /* set to differentiate zynq from zynqmp, 0=zynqmp, 1=zynq */
 #define ZYNQ_GPIO_QUIRK_IS_ZYNQ	BIT(0)
 #define GPIO_QUIRK_DATA_RO_BUG	BIT(1)
+#define GPIO_QUIRK_VERSAL	BIT(2)
 
 struct gpio_regs {
 	u32 datamsw[ZYNQMP_GPIO_MAX_BANK];
@@ -116,6 +121,7 @@ struct gpio_regs {
  * @irq:	interrupt for the GPIO device
  * @p_data:	pointer to platform data
  * @context:	context registers
+ * @dirlock:	lock used for direction in/out synchronization
  */
 struct zynq_gpio {
 	struct gpio_chip chip;
@@ -124,6 +130,7 @@ struct zynq_gpio {
 	int irq;
 	const struct zynq_platform_data *p_data;
 	struct gpio_regs context;
+	spinlock_t dirlock; /* lock */
 };
 
 /**
@@ -196,6 +203,8 @@ static inline void zynq_gpio_get_bank_pin(unsigned int pin_num,
 					gpio->p_data->bank_min[bank];
 			return;
 		}
+		if (gpio->p_data->quirks & GPIO_QUIRK_VERSAL)
+			bank = bank + VERSAL_UNUSED_BANKS;
 	}
 
 	/* default */
@@ -297,6 +306,7 @@ static int zynq_gpio_dir_in(struct gpio_chip *chip, unsigned int pin)
 {
 	u32 reg;
 	unsigned int bank_num, bank_pin_num;
+	unsigned long flags;
 	struct zynq_gpio *gpio = gpiochip_get_data(chip);
 
 	zynq_gpio_get_bank_pin(pin, &bank_num, &bank_pin_num, gpio);
@@ -310,9 +320,11 @@ static int zynq_gpio_dir_in(struct gpio_chip *chip, unsigned int pin)
 		return -EINVAL;
 
 	/* clear the bit in direction mode reg to set the pin as input */
+	spin_lock_irqsave(&gpio->dirlock, flags);
 	reg = readl_relaxed(gpio->base_addr + ZYNQ_GPIO_DIRM_OFFSET(bank_num));
 	reg &= ~BIT(bank_pin_num);
 	writel_relaxed(reg, gpio->base_addr + ZYNQ_GPIO_DIRM_OFFSET(bank_num));
+	spin_unlock_irqrestore(&gpio->dirlock, flags);
 
 	return 0;
 }
@@ -334,11 +346,13 @@ static int zynq_gpio_dir_out(struct gpio_chip *chip, unsigned int pin,
 {
 	u32 reg;
 	unsigned int bank_num, bank_pin_num;
+	unsigned long flags;
 	struct zynq_gpio *gpio = gpiochip_get_data(chip);
 
 	zynq_gpio_get_bank_pin(pin, &bank_num, &bank_pin_num, gpio);
 
 	/* set the GPIO pin as output */
+	spin_lock_irqsave(&gpio->dirlock, flags);
 	reg = readl_relaxed(gpio->base_addr + ZYNQ_GPIO_DIRM_OFFSET(bank_num));
 	reg |= BIT(bank_pin_num);
 	writel_relaxed(reg, gpio->base_addr + ZYNQ_GPIO_DIRM_OFFSET(bank_num));
@@ -347,6 +361,7 @@ static int zynq_gpio_dir_out(struct gpio_chip *chip, unsigned int pin,
 	reg = readl_relaxed(gpio->base_addr + ZYNQ_GPIO_OUTEN_OFFSET(bank_num));
 	reg |= BIT(bank_pin_num);
 	writel_relaxed(reg, gpio->base_addr + ZYNQ_GPIO_OUTEN_OFFSET(bank_num));
+	spin_unlock_irqrestore(&gpio->dirlock, flags);
 
 	/* set the state of the pin */
 	zynq_gpio_set_value(chip, pin, state);
@@ -647,6 +662,8 @@ static void zynq_gpio_irqhandler(struct irq_desc *desc)
 		int_enb = readl_relaxed(gpio->base_addr +
 					ZYNQ_GPIO_INTMASK_OFFSET(bank_num));
 		zynq_gpio_handle_bank_irq(gpio, bank_num, int_sts & ~int_enb);
+		if (gpio->p_data->quirks & GPIO_QUIRK_VERSAL)
+			bank_num = bank_num + VERSAL_UNUSED_BANKS;
 	}
 
 	chained_irq_exit(irqchip, desc);
@@ -676,6 +693,8 @@ static void zynq_gpio_save_context(struct zynq_gpio *gpio)
 		gpio->context.int_any[bank_num] =
 				readl_relaxed(gpio->base_addr +
 				ZYNQ_GPIO_INTANY_OFFSET(bank_num));
+		if (gpio->p_data->quirks & GPIO_QUIRK_VERSAL)
+			bank_num = bank_num + VERSAL_UNUSED_BANKS;
 	}
 }
 
@@ -707,6 +726,8 @@ static void zynq_gpio_restore_context(struct zynq_gpio *gpio)
 		writel_relaxed(~(gpio->context.int_en[bank_num]),
 			       gpio->base_addr +
 			       ZYNQ_GPIO_INTEN_OFFSET(bank_num));
+		if (gpio->p_data->quirks & GPIO_QUIRK_VERSAL)
+			bank_num = bank_num + VERSAL_UNUSED_BANKS;
 	}
 }
 
@@ -715,6 +736,9 @@ static int __maybe_unused zynq_gpio_suspend(struct device *dev)
 	struct zynq_gpio *gpio = dev_get_drvdata(dev);
 	struct irq_data *data = irq_get_irq_data(gpio->irq);
 
+	if (!device_may_wakeup(dev))
+		disable_irq(gpio->irq);
+
 	if (!irqd_is_wakeup_set(data)) {
 		zynq_gpio_save_context(gpio);
 		return pm_runtime_force_suspend(dev);
@@ -729,6 +753,9 @@ static int __maybe_unused zynq_gpio_resume(struct device *dev)
 	struct irq_data *data = irq_get_irq_data(gpio->irq);
 	int ret;
 
+	if (!device_may_wakeup(dev))
+		enable_irq(gpio->irq);
+
 	if (!irqd_is_wakeup_set(data)) {
 		ret = pm_runtime_force_resume(dev);
 		zynq_gpio_restore_context(gpio);
@@ -778,6 +805,31 @@ static const struct dev_pm_ops zynq_gpio_dev_pm_ops = {
 			   zynq_gpio_runtime_resume, NULL)
 };
 
+static const struct zynq_platform_data versal_gpio_def = {
+	.label = "versal_gpio",
+	.quirks = GPIO_QUIRK_VERSAL,
+	.ngpio = 58,
+	.max_bank = VERSAL_GPIO_MAX_BANK,
+	.bank_min[0] = 0,
+	.bank_max[0] = 25, /* 0 to 25 are connected to MIOs (26 pins) */
+	.bank_min[3] = 26,
+	.bank_max[3] = 57, /* Bank 3 is connected to FMIOs (32 pins) */
+};
+
+static const struct zynq_platform_data pmc_gpio_def = {
+	.label = "pmc_gpio",
+	.ngpio = 116,
+	.max_bank = PMC_GPIO_MAX_BANK,
+	.bank_min[0] = 0,
+	.bank_max[0] = 25, /* 0 to 25 are connected to MIOs (26 pins) */
+	.bank_min[1] = 26,
+	.bank_max[1] = 51, /* Bank 1 are connected to MIOs (26 pins) */
+	.bank_min[3] = 52,
+	.bank_max[3] = 83, /* Bank 3 is connected to EMIOs (32 pins) */
+	.bank_min[4] = 84,
+	.bank_max[4] = 115, /* Bank 4 is connected to EMIOs (32 pins) */
+};
+
 static const struct zynq_platform_data zynqmp_gpio_def = {
 	.label = "zynqmp_gpio",
 	.quirks = GPIO_QUIRK_DATA_RO_BUG,
@@ -815,6 +867,8 @@ static const struct zynq_platform_data zynq_gpio_def = {
 static const struct of_device_id zynq_gpio_of_match[] = {
 	{ .compatible = "xlnx,zynq-gpio-1.0", .data = &zynq_gpio_def },
 	{ .compatible = "xlnx,zynqmp-gpio-1.0", .data = &zynqmp_gpio_def },
+	{ .compatible = "xlnx,versal-gpio-1.0", .data = &versal_gpio_def },
+	{ .compatible = "xlnx,pmc-gpio-1.0", .data = &pmc_gpio_def },
 	{ /* end of table */ }
 };
 MODULE_DEVICE_TABLE(of, zynq_gpio_of_match);
@@ -876,7 +930,8 @@ static int zynq_gpio_probe(struct platform_device *pdev)
 	/* Retrieve GPIO clock */
 	gpio->clk = devm_clk_get(&pdev->dev, NULL);
 	if (IS_ERR(gpio->clk)) {
-		dev_err(&pdev->dev, "input clock not found.\n");
+		if (PTR_ERR(gpio->clk) != -EPROBE_DEFER)
+			dev_err(&pdev->dev, "input clock not found.\n");
 		return PTR_ERR(gpio->clk);
 	}
 	ret = clk_prepare_enable(gpio->clk);
@@ -885,6 +940,8 @@ static int zynq_gpio_probe(struct platform_device *pdev)
 		return ret;
 	}
 
+	spin_lock_init(&gpio->dirlock);
+
 	pm_runtime_set_active(&pdev->dev);
 	pm_runtime_enable(&pdev->dev);
 	ret = pm_runtime_get_sync(&pdev->dev);
@@ -892,9 +949,12 @@ static int zynq_gpio_probe(struct platform_device *pdev)
 		goto err_pm_dis;
 
 	/* disable interrupts for all banks */
-	for (bank_num = 0; bank_num < gpio->p_data->max_bank; bank_num++)
+	for (bank_num = 0; bank_num < gpio->p_data->max_bank; bank_num++) {
 		writel_relaxed(ZYNQ_GPIO_IXR_DISABLE_ALL, gpio->base_addr +
 			       ZYNQ_GPIO_INTDIS_OFFSET(bank_num));
+		if (gpio->p_data->quirks & GPIO_QUIRK_VERSAL)
+			bank_num = bank_num + VERSAL_UNUSED_BANKS;
+	}
 
 	/* Set up the GPIO irqchip */
 	girq = &chip->irq;
@@ -919,6 +979,8 @@ static int zynq_gpio_probe(struct platform_device *pdev)
 		goto err_pm_put;
 	}
 
+	irq_set_status_flags(gpio->irq, IRQ_DISABLE_UNLAZY);
+	device_init_wakeup(&pdev->dev, 1);
 	pm_runtime_put(&pdev->dev);
 
 	return 0;

drivers/gpio/gpiolib-cdev.h

+/* SPDX-License-Identifier: GPL-2.0 */
+
+#ifndef GPIOLIB_CDEV_H
+#define GPIOLIB_CDEV_H
+
+#include <linux/device.h>
+
+int gpiolib_cdev_register(struct gpio_device *gdev, dev_t devt);
+void gpiolib_cdev_unregister(struct gpio_device *gdev);
+
+#endif /* GPIOLIB_CDEV_H */

drivers/gpio/gpiolib-of.c

@@ -25,6 +25,9 @@
 
 /**
  * of_gpio_spi_cs_get_count() - special GPIO counting for SPI
+ * @dev:    Consuming device
+ * @con_id: Function within the GPIO consumer
+ *
  * Some elder GPIO controllers need special quirks. Currently we handle
  * the Freescale GPIO controller with bindings that doesn't use the
  * established "cs-gpios" for chip selects but instead rely on

drivers/gpio/gpiolib-sysfs.c

@@ -365,7 +365,7 @@ static DEVICE_ATTR_RW(active_low);
 static umode_t gpio_is_visible(struct kobject *kobj, struct attribute *attr,
 			       int n)
 {
-	struct device *dev = container_of(kobj, struct device, kobj);
+	struct device *dev = kobj_to_dev(kobj);
 	struct gpiod_data *data = dev_get_drvdata(dev);
 	struct gpio_desc *desc = data->desc;
 	umode_t mode = attr->mode;

drivers/pinctrl/pinctrl-at91.c

@@ -1486,14 +1486,11 @@ static void at91_gpio_dbg_show(struct seq_file *s, struct gpio_chip *chip)
 	int i;
 	struct at91_gpio_chip *at91_gpio = gpiochip_get_data(chip);
 	void __iomem *pio = at91_gpio->regbase;
+	const char *gpio_label;
 
-	for (i = 0; i < chip->ngpio; i++) {
+	for_each_requested_gpio(chip, i, gpio_label) {
 		unsigned mask = pin_to_mask(i);
-		const char *gpio_label;
 
-		gpio_label = gpiochip_is_requested(chip, i);
-		if (!gpio_label)
-			continue;
 		mode = at91_gpio->ops->get_periph(pio, mask);
 		seq_printf(s, "[%s] GPIO%s%d: ",
 			   gpio_label, chip->label, i);

include/linux/gpio/driver.h

@@ -474,6 +474,22 @@ struct gpio_chip {
 extern const char *gpiochip_is_requested(struct gpio_chip *gc,
 			unsigned int offset);
 
+/**
+ * for_each_requested_gpio_in_range - iterates over requested GPIOs in a given range
+ * @chip:	the chip to query
+ * @i:		loop variable
+ * @base:	first GPIO in the range
+ * @size:	amount of GPIOs to check starting from @base
+ * @label:	label of current GPIO
+ */
+#define for_each_requested_gpio_in_range(chip, i, base, size, label)			\
+	for (i = 0; i < size; i++)							\
+		if ((label = gpiochip_is_requested(chip, base + i)) == NULL) {} else
+
+/* Iterates over all requested GPIO of the given @chip */
+#define for_each_requested_gpio(chip, i, label)						\
+	for_each_requested_gpio_in_range(chip, i, 0, chip->ngpio, label)
+
 /* add/remove chips */
 extern int gpiochip_add_data_with_key(struct gpio_chip *gc, void *data,
 				      struct lock_class_key *lock_key,
@@ -481,7 +497,7 @@ extern int gpiochip_add_data_with_key(struct gpio_chip *gc, void *data,
 
 /**
  * gpiochip_add_data() - register a gpio_chip
- * @chip: the chip to register, with chip->base initialized
+ * @gc: the chip to register, with chip->base initialized
  * @data: driver-private data associated with this chip
  *
  * Context: potentially before irqs will work