Merge tag 'gpio-v5.4-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio

Pull GPIO updates from Linus Walleij:
 "This is the bulk of changes in the GPIO subsystem for the v5.4 kernel
  cycle.

  Core changes:

   - Support hierarchical GPIO irqchips.

     We now have three consumers that can use this: Intel IXP4xx,
     ThunderX and Qualcomm SPMI GPIO (in the pinctrl subsystem).

     The support code has been long in the making and hashed out so it
     should be easily adaptable for all hierarchical irqchip parents.
     The code only gets compiled in if hierarchical irqchip is used at
     the topmost irq controller at least, as the hierarchical irqchip
     requires strict hierarchy all the way up in the system.

   - Determine the need for a "valid_mask" for GPIO lines on the
     gpio_chip and conversely for the "valid_mask" for the GPIO
     interrupt chip interrupt lines by looking for a .init_valid_mask()
     callback in the main chip or GPIO interrupt chip respectively.
     Allocate it with bitmap_alloc().

   - Isolate the device tree/open firmware GPIO description code out in
     its own file properly.

   - Isolate the ACPI GPIO description code out in its own file
     properly.

   - Drop a whole lot of #ifdef:s in the main includes: it does not hurt
     to keep the include items around, and we get quicker and clearer
     compile failures if the appropriate kernel symbols are not selected
     for drivers.

  New/deleted drivers:

   - New driver for Aspeed SGPIO.

   - The KS8695 driver is deleted as the platform gets deleted from
     arch/arm in this kernel cycle.

   - The Cirrus Logic Madera driver now supports CS47L92 and CS47L15.

   - The Freescale MPC8xxx now supports LS1028A and LS1088A.

  Driver improvements:

   - We pass the GPIO irqchip intialization by directly filling in the
     struct instead of using set-up functions (the new way) for Intel
     MID, Lynxpoint, Merrifield, XLP, HLWD, Aspeed, ZX, VF610, TQMX86,
     MT7621, Zynq and EP93xx.

  Out-of-band changes:

   - Fix a GPIO header inclusion in Unicore - no response from
     maintainer.

   - Drop FMC subsystem from MAINTAINERS - was deleted in the GPIO tree
     last cycle so let's mop up the shards"

* tag 'gpio-v5.4-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio: (82 commits)
  gpiolib: of: add a fallback for wlf,reset GPIO name
  gpio: htc-egpio: Remove unused exported htc_egpio_get_wakeup_irq()
  gpio: remove explicit comparison with 0
  gpio: creg-snps: use devm_platform_ioremap_resource() to simplify code
  gpio: devres: Switch to EXPORT_SYMBOL_GPL()
  gpio: of: Switch to EXPORT_SYMBOL_GPL()
  gpio: of: Make of_gpio_simple_xlate() private
  gpio: of: Make of_get_named_gpiod_flags() private
  gpio: aspeed: Add in ast2600 details to Aspeed driver
  gpio: aspeed: Use ngpio property from device tree if available
  gpio: aspeed: Setup irqchip dynamically
  gpio/aspeed: Fix incorrect number of banks
  gpio: aspeed: Update documentation with ast2600 controllers
  gpio: Initialize the irqchip valid_mask with a callback
  gpiolib: acpi: make acpi_can_fallback_to_crs() static
  gpio: Fix further merge errors
  gpio: Fix up merge collision in include file
  gpio: of: Normalize return code variable name
  gpio: gpiolib: Normalize return code variable name
  gpio: ep93xx: Pass irqchip when adding gpiochip
  ...

52 files changed, 1999 insertions, 1498 deletions

diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
index bb13c266c329..e193c76948c4 100644
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -288,7 +288,7 @@ config GPIO_IXP4XX
 	depends on ARM # For <asm/mach-types.h>
 	depends on ARCH_IXP4XX
 	select GPIO_GENERIC
-	select IRQ_DOMAIN
+	select GPIOLIB_IRQCHIP
 	select IRQ_DOMAIN_HIERARCHY
 	help
 	  Say yes here to support the GPIO functionality of a number of Intel
@@ -311,6 +311,13 @@ config GPIO_LPC18XX
 	  Select this option to enable GPIO driver for
 	  NXP LPC18XX/43XX devices.
 
+config GPIO_LPC32XX
+	tristate "NXP LPC32XX GPIO support"
+	depends on OF_GPIO && (ARCH_LPC32XX || COMPILE_TEST)
+	help
+	  Select this option to enable GPIO driver for
+	  NXP LPC32XX devices.
+
 config GPIO_LYNXPOINT
 	tristate "Intel Lynxpoint GPIO support"
 	depends on ACPI && X86
@@ -539,6 +546,7 @@ config GPIO_THUNDERX
 	tristate "Cavium ThunderX/OCTEON-TX GPIO"
 	depends on ARCH_THUNDER || (64BIT && COMPILE_TEST)
 	depends on PCI_MSI
+	select GPIOLIB_IRQCHIP
 	select IRQ_DOMAIN_HIERARCHY
 	select IRQ_FASTEOI_HIERARCHY_HANDLERS
 	help
@@ -1465,7 +1473,6 @@ endmenu
 
 config GPIO_MOCKUP
 	tristate "GPIO Testing Driver"
-	depends on GPIOLIB
 	select IRQ_SIM
 	help
 	  This enables GPIO Testing driver, which provides a way to test GPIO
diff --git a/drivers/gpio/Makefile b/drivers/gpio/Makefile
index a4e91175c708..f3e051fb50e6 100644
--- a/drivers/gpio/Makefile
+++ b/drivers/gpio/Makefile
@@ -67,14 +67,13 @@ obj-$(CONFIG_GPIO_IT87)			+= gpio-it87.o
 obj-$(CONFIG_GPIO_IXP4XX)		+= gpio-ixp4xx.o
 obj-$(CONFIG_GPIO_JANZ_TTL)		+= gpio-janz-ttl.o
 obj-$(CONFIG_GPIO_KEMPLD)		+= gpio-kempld.o
-obj-$(CONFIG_ARCH_KS8695)		+= gpio-ks8695.o
 obj-$(CONFIG_GPIO_LOONGSON1)		+= gpio-loongson1.o
 obj-$(CONFIG_GPIO_LOONGSON)		+= gpio-loongson.o
 obj-$(CONFIG_GPIO_LP3943)		+= gpio-lp3943.o
 obj-$(CONFIG_GPIO_LP873X)		+= gpio-lp873x.o
 obj-$(CONFIG_GPIO_LP87565)		+= gpio-lp87565.o
 obj-$(CONFIG_GPIO_LPC18XX)		+= gpio-lpc18xx.o
-obj-$(CONFIG_ARCH_LPC32XX)		+= gpio-lpc32xx.o
+obj-$(CONFIG_GPIO_LPC32XX)		+= gpio-lpc32xx.o
 obj-$(CONFIG_GPIO_LYNXPOINT)		+= gpio-lynxpoint.o
 obj-$(CONFIG_GPIO_MADERA)		+= gpio-madera.o
 obj-$(CONFIG_GPIO_MAX3191X)		+= gpio-max3191x.o
diff --git a/drivers/gpio/gpio-arizona.c b/drivers/gpio/gpio-arizona.c
index c07fad975049..5640efe5e750 100644
--- a/drivers/gpio/gpio-arizona.c
+++ b/drivers/gpio/gpio-arizona.c
@@ -142,7 +142,7 @@ static const struct gpio_chip template_chip = {
 static int arizona_gpio_probe(struct platform_device *pdev)
 {
 	struct arizona *arizona = dev_get_drvdata(pdev->dev.parent);
-	struct arizona_pdata *pdata = dev_get_platdata(arizona->dev);
+	struct arizona_pdata *pdata = &arizona->pdata;
 	struct arizona_gpio *arizona_gpio;
 	int ret;
 
@@ -177,7 +177,7 @@ static int arizona_gpio_probe(struct platform_device *pdev)
 		return -EINVAL;
 	}
 
-	if (pdata && pdata->gpio_base)
+	if (pdata->gpio_base)
 		arizona_gpio->gpio_chip.base = pdata->gpio_base;
 	else
 		arizona_gpio->gpio_chip.base = -1;
diff --git a/drivers/gpio/gpio-aspeed.c b/drivers/gpio/gpio-aspeed.c
index 13d80bfbc3b6..09e53c5f3b0a 100644
--- a/drivers/gpio/gpio-aspeed.c
+++ b/drivers/gpio/gpio-aspeed.c
@@ -52,6 +52,7 @@ struct aspeed_gpio_config {
  */
 struct aspeed_gpio {
 	struct gpio_chip chip;
+	struct irq_chip irqc;
 	spinlock_t lock;
 	void __iomem *base;
 	int irq;
@@ -661,12 +662,14 @@ static void aspeed_gpio_irq_handler(struct irq_desc *desc)
 	struct gpio_chip *gc = irq_desc_get_handler_data(desc);
 	struct irq_chip *ic = irq_desc_get_chip(desc);
 	struct aspeed_gpio *data = gpiochip_get_data(gc);
-	unsigned int i, p, girq;
+	unsigned int i, p, girq, banks;
 	unsigned long reg;
+	struct aspeed_gpio *gpio = gpiochip_get_data(gc);
 
 	chained_irq_enter(ic, desc);
 
-	for (i = 0; i < ARRAY_SIZE(aspeed_gpio_banks); i++) {
+	banks = DIV_ROUND_UP(gpio->chip.ngpio, 32);
+	for (i = 0; i < banks; i++) {
 		const struct aspeed_gpio_bank *bank = &aspeed_gpio_banks[i];
 
 		reg = ioread32(bank_reg(data, bank, reg_irq_status));
@@ -681,16 +684,11 @@ static void aspeed_gpio_irq_handler(struct irq_desc *desc)
 	chained_irq_exit(ic, desc);
 }
 
-static struct irq_chip aspeed_gpio_irqchip = {
-	.name		= "aspeed-gpio",
-	.irq_ack	= aspeed_gpio_irq_ack,
-	.irq_mask	= aspeed_gpio_irq_mask,
-	.irq_unmask	= aspeed_gpio_irq_unmask,
-	.irq_set_type	= aspeed_gpio_set_type,
-};
-
-static void set_irq_valid_mask(struct aspeed_gpio *gpio)
+static void aspeed_init_irq_valid_mask(struct gpio_chip *gc,
+				       unsigned long *valid_mask,
+				       unsigned int ngpios)
 {
+	struct aspeed_gpio *gpio = gpiochip_get_data(gc);
 	const struct aspeed_bank_props *props = gpio->config->props;
 
 	while (!is_bank_props_sentinel(props)) {
@@ -701,42 +699,16 @@ static void set_irq_valid_mask(struct aspeed_gpio *gpio)
 		for_each_clear_bit(offset, &input, 32) {
 			unsigned int i = props->bank * 32 + offset;
 
-			if (i >= gpio->config->nr_gpios)
+			if (i >= gpio->chip.ngpio)
 				break;
 
-			clear_bit(i, gpio->chip.irq.valid_mask);
+			clear_bit(i, valid_mask);
 		}
 
 		props++;
 	}
 }
 
-static int aspeed_gpio_setup_irqs(struct aspeed_gpio *gpio,
-		struct platform_device *pdev)
-{
-	int rc;
-
-	rc = platform_get_irq(pdev, 0);
-	if (rc < 0)
-		return rc;
-
-	gpio->irq = rc;
-
-	set_irq_valid_mask(gpio);
-
-	rc = gpiochip_irqchip_add(&gpio->chip, &aspeed_gpio_irqchip,
-			0, handle_bad_irq, IRQ_TYPE_NONE);
-	if (rc) {
-		dev_info(&pdev->dev, "Could not add irqchip\n");
-		return rc;
-	}
-
-	gpiochip_set_chained_irqchip(&gpio->chip, &aspeed_gpio_irqchip,
-				     gpio->irq, aspeed_gpio_irq_handler);
-
-	return 0;
-}
-
 static int aspeed_gpio_reset_tolerance(struct gpio_chip *chip,
 					unsigned int offset, bool enable)
 {
@@ -1040,10 +1012,10 @@ int aspeed_gpio_copro_grab_gpio(struct gpio_desc *desc,
 	unsigned long flags;
 
 	if (!gpio->cf_copro_bankmap)
-		gpio->cf_copro_bankmap = kzalloc(gpio->config->nr_gpios >> 3, GFP_KERNEL);
+		gpio->cf_copro_bankmap = kzalloc(gpio->chip.ngpio >> 3, GFP_KERNEL);
 	if (!gpio->cf_copro_bankmap)
 		return -ENOMEM;
-	if (offset < 0 || offset > gpio->config->nr_gpios)
+	if (offset < 0 || offset > gpio->chip.ngpio)
 		return -EINVAL;
 	bindex = offset >> 3;
 
@@ -1088,7 +1060,7 @@ int aspeed_gpio_copro_release_gpio(struct gpio_desc *desc)
 	if (!gpio->cf_copro_bankmap)
 		return -ENXIO;
 
-	if (offset < 0 || offset > gpio->config->nr_gpios)
+	if (offset < 0 || offset > gpio->chip.ngpio)
 		return -EINVAL;
 	bindex = offset >> 3;
 
@@ -1141,9 +1113,25 @@ static const struct aspeed_gpio_config ast2500_config =
 	/* 232 for simplicity, actual number is 228 (4-GPIO hole in GPIOAB) */
 	{ .nr_gpios = 232, .props = ast2500_bank_props, };
 
+static const struct aspeed_bank_props ast2600_bank_props[] = {
+	/*     input	  output   */
+	{5, 0xffffffff,  0x0000ffff}, /* U/V/W/X */
+	{6, 0xffff0000,  0x0fff0000}, /* Y/Z */
+	{ },
+};
+
+static const struct aspeed_gpio_config ast2600_config =
+	/*
+	 * ast2600 has two controllers one with 208 GPIOs and one with 36 GPIOs.
+	 * We expect ngpio being set in the device tree and this is a fallback
+	 * option.
+	 */
+	{ .nr_gpios = 208, .props = ast2600_bank_props, };
+
 static const struct of_device_id aspeed_gpio_of_table[] = {
 	{ .compatible = "aspeed,ast2400-gpio", .data = &ast2400_config, },
 	{ .compatible = "aspeed,ast2500-gpio", .data = &ast2500_config, },
+	{ .compatible = "aspeed,ast2600-gpio", .data = &ast2600_config, },
 	{}
 };
 MODULE_DEVICE_TABLE(of, aspeed_gpio_of_table);
@@ -1152,7 +1140,8 @@ static int __init aspeed_gpio_probe(struct platform_device *pdev)
 {
 	const struct of_device_id *gpio_id;
 	struct aspeed_gpio *gpio;
-	int rc, i, banks;
+	int rc, i, banks, err;
+	u32 ngpio;
 
 	gpio = devm_kzalloc(&pdev->dev, sizeof(*gpio), GFP_KERNEL);
 	if (!gpio)
@@ -1178,7 +1167,10 @@ static int __init aspeed_gpio_probe(struct platform_device *pdev)
 	gpio->config = gpio_id->data;
 
 	gpio->chip.parent = &pdev->dev;
-	gpio->chip.ngpio = gpio->config->nr_gpios;
+	err = of_property_read_u32(pdev->dev.of_node, "ngpios", &ngpio);
+	gpio->chip.ngpio = (u16) ngpio;
+	if (err)
+		gpio->chip.ngpio = gpio->config->nr_gpios;
 	gpio->chip.direction_input = aspeed_gpio_dir_in;
 	gpio->chip.direction_output = aspeed_gpio_dir_out;
 	gpio->chip.get_direction = aspeed_gpio_get_direction;
@@ -1189,10 +1181,9 @@ static int __init aspeed_gpio_probe(struct platform_device *pdev)
 	gpio->chip.set_config = aspeed_gpio_set_config;
 	gpio->chip.label = dev_name(&pdev->dev);
 	gpio->chip.base = -1;
-	gpio->chip.irq.need_valid_mask = true;
 
 	/* Allocate a cache of the output registers */
-	banks = gpio->config->nr_gpios >> 5;
+	banks = DIV_ROUND_UP(gpio->chip.ngpio, 32);
 	gpio->dcache = devm_kcalloc(&pdev->dev,
 				    banks, sizeof(u32), GFP_KERNEL);
 	if (!gpio->dcache)
@@ -1212,16 +1203,42 @@ static int __init aspeed_gpio_probe(struct platform_device *pdev)
 		aspeed_gpio_change_cmd_source(gpio, bank, 3, GPIO_CMDSRC_ARM);
 	}
 
-	rc = devm_gpiochip_add_data(&pdev->dev, &gpio->chip, gpio);
-	if (rc < 0)
-		return rc;
+	/* Optionally set up an irqchip if there is an IRQ */
+	rc = platform_get_irq(pdev, 0);
+	if (rc > 0) {
+		struct gpio_irq_chip *girq;
+
+		gpio->irq = rc;
+		girq = &gpio->chip.irq;
+		girq->chip = &gpio->irqc;
+		girq->chip->name = dev_name(&pdev->dev);
+		girq->chip->irq_ack = aspeed_gpio_irq_ack;
+		girq->chip->irq_mask = aspeed_gpio_irq_mask;
+		girq->chip->irq_unmask = aspeed_gpio_irq_unmask;
+		girq->chip->irq_set_type = aspeed_gpio_set_type;
+		girq->parent_handler = aspeed_gpio_irq_handler;
+		girq->num_parents = 1;
+		girq->parents = devm_kcalloc(&pdev->dev, 1,
+					     sizeof(*girq->parents),
+					     GFP_KERNEL);
+		if (!girq->parents)
+			return -ENOMEM;
+		girq->parents[0] = gpio->irq;
+		girq->default_type = IRQ_TYPE_NONE;
+		girq->handler = handle_bad_irq;
+		girq->init_valid_mask = aspeed_init_irq_valid_mask;
+	}
 
 	gpio->offset_timer =
 		devm_kzalloc(&pdev->dev, gpio->chip.ngpio, GFP_KERNEL);
 	if (!gpio->offset_timer)
 		return -ENOMEM;
 
-	return aspeed_gpio_setup_irqs(gpio, pdev);
+	rc = devm_gpiochip_add_data(&pdev->dev, &gpio->chip, gpio);
+	if (rc < 0)
+		return rc;
+
+	return 0;
 }
 
 static struct platform_driver aspeed_gpio_driver = {
diff --git a/drivers/gpio/gpio-bd70528.c b/drivers/gpio/gpio-bd70528.c
index fd85605d2dab..0c1ead12d883 100644
--- a/drivers/gpio/gpio-bd70528.c
+++ b/drivers/gpio/gpio-bd70528.c
@@ -36,7 +36,7 @@ static int bd70528_set_debounce(struct bd70528_gpio *bdgpio,
 		break;
 	default:
 		dev_err(bdgpio->chip.dev,
-			"Invalid debouce value %u\n", debounce);
+			"Invalid debounce value %u\n", debounce);
 		return -EINVAL;
 	}
 	return regmap_update_bits(bdgpio->chip.regmap, GPIO_IN_REG(offset),
@@ -153,7 +153,7 @@ static int bd70528_gpio_get_i(struct bd70528_gpio *bdgpio, unsigned int offset)
 
 static int bd70528_gpio_get(struct gpio_chip *chip, unsigned int offset)
 {
-	int ret = -EINVAL;
+	int ret;
 	struct bd70528_gpio *bdgpio = gpiochip_get_data(chip);
 
 	/*
diff --git a/drivers/gpio/gpio-brcmstb.c b/drivers/gpio/gpio-brcmstb.c
index af936dcca659..05e3f99ae59c 100644
--- a/drivers/gpio/gpio-brcmstb.c
+++ b/drivers/gpio/gpio-brcmstb.c
@@ -636,10 +636,8 @@ static int brcmstb_gpio_probe(struct platform_device *pdev)
 
 	if (of_property_read_bool(np, "interrupt-controller")) {
 		priv->parent_irq = platform_get_irq(pdev, 0);
-		if (priv->parent_irq <= 0) {
-			dev_err(dev, "Couldn't get IRQ");
+		if (priv->parent_irq <= 0)
 			return -ENOENT;
-		}
 	} else {
 		priv->parent_irq = -ENOENT;
 	}
diff --git a/drivers/gpio/gpio-cadence.c b/drivers/gpio/gpio-cadence.c
index 712ae212b0b4..a4d3239d2594 100644
--- a/drivers/gpio/gpio-cadence.c
+++ b/drivers/gpio/gpio-cadence.c
@@ -214,27 +214,33 @@ static int cdns_gpio_probe(struct platform_device *pdev)
 		goto err_revert_dir;
 	}
 
-	ret = devm_gpiochip_add_data(&pdev->dev, &cgpio->gc, cgpio);
-	if (ret < 0) {
-		dev_err(&pdev->dev, "Could not register gpiochip, %d\n", ret);
-		goto err_disable_clk;
-	}
-
 	/*
-	 * irq_chip support
+	 * Optional irq_chip support
 	 */
 	irq = platform_get_irq(pdev, 0);
 	if (irq >= 0) {
-		ret = gpiochip_irqchip_add(&cgpio->gc, &cdns_gpio_irqchip,
-					   0, handle_level_irq,
-					   IRQ_TYPE_NONE);
-		if (ret) {
-			dev_err(&pdev->dev, "Could not add irqchip, %d\n",
-				ret);
+		struct gpio_irq_chip *girq;
+
+		girq = &cgpio->gc.irq;
+		girq->chip = &cdns_gpio_irqchip;
+		girq->parent_handler = cdns_gpio_irq_handler;
+		girq->num_parents = 1;
+		girq->parents = devm_kcalloc(&pdev->dev, 1,
+					     sizeof(*girq->parents),
+					     GFP_KERNEL);
+		if (!girq->parents) {
+			ret = -ENOMEM;
 			goto err_disable_clk;
 		}
-		gpiochip_set_chained_irqchip(&cgpio->gc, &cdns_gpio_irqchip,
-					     irq, cdns_gpio_irq_handler);
+		girq->parents[0] = irq;
+		girq->default_type = IRQ_TYPE_NONE;
+		girq->handler = handle_level_irq;
+	}
+
+	ret = devm_gpiochip_add_data(&pdev->dev, &cgpio->gc, cgpio);
+	if (ret < 0) {
+		dev_err(&pdev->dev, "Could not register gpiochip, %d\n", ret);
+		goto err_disable_clk;
 	}
 
 	cgpio->bypass_orig = ioread32(cgpio->regs + CDNS_GPIO_BYPASS_MODE);
diff --git a/drivers/gpio/gpio-creg-snps.c b/drivers/gpio/gpio-creg-snps.c
index 8cbc94d0d424..ff19a8ad5663 100644
--- a/drivers/gpio/gpio-creg-snps.c
+++ b/drivers/gpio/gpio-creg-snps.c
@@ -137,7 +137,6 @@ static int creg_gpio_probe(struct platform_device *pdev)
 	const struct of_device_id *match;
 	struct device *dev = &pdev->dev;
 	struct creg_gpio *hcg;
-	struct resource *mem;
 	u32 ngpios;
 	int ret;
 
@@ -145,8 +144,7 @@ static int creg_gpio_probe(struct platform_device *pdev)
 	if (!hcg)
 		return -ENOMEM;
 
-	mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	hcg->regs = devm_ioremap_resource(dev, mem);
+	hcg->regs = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(hcg->regs))
 		return PTR_ERR(hcg->regs);
 
diff --git a/drivers/gpio/gpio-dwapb.c b/drivers/gpio/gpio-dwapb.c
index 3108be5e208c..92e127e74813 100644
--- a/drivers/gpio/gpio-dwapb.c
+++ b/drivers/gpio/gpio-dwapb.c
@@ -27,6 +27,7 @@
 #include <linux/slab.h>
 
 #include "gpiolib.h"
+#include "gpiolib-acpi.h"
 
 #define GPIO_SWPORTA_DR		0x00
 #define GPIO_SWPORTA_DDR	0x04
diff --git a/drivers/gpio/gpio-eic-sprd.c b/drivers/gpio/gpio-eic-sprd.c
index 7b9ac4a12c20..fe7a73f52329 100644
--- a/drivers/gpio/gpio-eic-sprd.c
+++ b/drivers/gpio/gpio-eic-sprd.c
@@ -584,10 +584,8 @@ static int sprd_eic_probe(struct platform_device *pdev)
 	sprd_eic->type = pdata->type;
 
 	sprd_eic->irq = platform_get_irq(pdev, 0);
-	if (sprd_eic->irq < 0) {
-		dev_err(&pdev->dev, "Failed to get EIC interrupt.\n");
+	if (sprd_eic->irq < 0)
 		return sprd_eic->irq;
-	}
 
 	for (i = 0; i < SPRD_EIC_MAX_BANK; i++) {
 		/*
diff --git a/drivers/gpio/gpio-em.c b/drivers/gpio/gpio-em.c
index a87951293aaa..620f25b7efb4 100644
--- a/drivers/gpio/gpio-em.c
+++ b/drivers/gpio/gpio-em.c
@@ -272,11 +272,12 @@ static int em_gio_probe(struct platform_device *pdev)
 	struct resource *io[2], *irq[2];
 	struct gpio_chip *gpio_chip;
 	struct irq_chip *irq_chip;
-	const char *name = dev_name(&pdev->dev);
+	struct device *dev = &pdev->dev;
+	const char *name = dev_name(dev);
 	unsigned int ngpios;
 	int ret;
 
-	p = devm_kzalloc(&pdev->dev, sizeof(*p), GFP_KERNEL);
+	p = devm_kzalloc(dev, sizeof(*p), GFP_KERNEL);
 	if (!p)
 		return -ENOMEM;
 
@@ -290,27 +291,27 @@ static int em_gio_probe(struct platform_device *pdev)
 	irq[1] = platform_get_resource(pdev, IORESOURCE_IRQ, 1);
 
 	if (!io[0] || !io[1] || !irq[0] || !irq[1]) {
-		dev_err(&pdev->dev, "missing IRQ or IOMEM\n");
+		dev_err(dev, "missing IRQ or IOMEM\n");
 		return -EINVAL;
 	}
 
-	p->base0 = devm_ioremap_nocache(&pdev->dev, io[0]->start,
+	p->base0 = devm_ioremap_nocache(dev, io[0]->start,
 					resource_size(io[0]));
 	if (!p->base0)
 		return -ENOMEM;
 
-	p->base1 = devm_ioremap_nocache(&pdev->dev, io[1]->start,
+	p->base1 = devm_ioremap_nocache(dev, io[1]->start,
 				   resource_size(io[1]));
 	if (!p->base1)
 		return -ENOMEM;
 
-	if (of_property_read_u32(pdev->dev.of_node, "ngpios", &ngpios)) {
-		dev_err(&pdev->dev, "Missing ngpios OF property\n");
+	if (of_property_read_u32(dev->of_node, "ngpios", &ngpios)) {
+		dev_err(dev, "Missing ngpios OF property\n");
 		return -EINVAL;
 	}
 
 	gpio_chip = &p->gpio_chip;
-	gpio_chip->of_node = pdev->dev.of_node;
+	gpio_chip->of_node = dev->of_node;
 	gpio_chip->direction_input = em_gio_direction_input;
 	gpio_chip->get = em_gio_get;
 	gpio_chip->direction_output = em_gio_direction_output;
@@ -319,7 +320,7 @@ static int em_gio_probe(struct platform_device *pdev)
 	gpio_chip->request = em_gio_request;
 	gpio_chip->free = em_gio_free;
 	gpio_chip->label = name;
-	gpio_chip->parent = &pdev->dev;
+	gpio_chip->parent = dev;
 	gpio_chip->owner = THIS_MODULE;
 	gpio_chip->base = -1;
 	gpio_chip->ngpio = ngpios;
@@ -333,33 +334,33 @@ static int em_gio_probe(struct platform_device *pdev)
 	irq_chip->irq_release_resources = em_gio_irq_relres;
 	irq_chip->flags	= IRQCHIP_SKIP_SET_WAKE | IRQCHIP_MASK_ON_SUSPEND;
 
-	p->irq_domain = irq_domain_add_simple(pdev->dev.of_node, ngpios, 0,
+	p->irq_domain = irq_domain_add_simple(dev->of_node, ngpios, 0,
 					      &em_gio_irq_domain_ops, p);
 	if (!p->irq_domain) {
-		dev_err(&pdev->dev, "cannot initialize irq domain\n");
+		dev_err(dev, "cannot initialize irq domain\n");
 		return -ENXIO;
 	}
 
-	ret = devm_add_action_or_reset(&pdev->dev, em_gio_irq_domain_remove,
+	ret = devm_add_action_or_reset(dev, em_gio_irq_domain_remove,
 				       p->irq_domain);
 	if (ret)
 		return ret;
 
-	if (devm_request_irq(&pdev->dev, irq[0]->start,
+	if (devm_request_irq(dev, irq[0]->start,
 			     em_gio_irq_handler, 0, name, p)) {
-		dev_err(&pdev->dev, "failed to request low IRQ\n");
+		dev_err(dev, "failed to request low IRQ\n");
 		return -ENOENT;
 	}
 
-	if (devm_request_irq(&pdev->dev, irq[1]->start,
+	if (devm_request_irq(dev, irq[1]->start,
 			     em_gio_irq_handler, 0, name, p)) {
-		dev_err(&pdev->dev, "failed to request high IRQ\n");
+		dev_err(dev, "failed to request high IRQ\n");
 		return -ENOENT;
 	}
 
-	ret = devm_gpiochip_add_data(&pdev->dev, gpio_chip, p);
+	ret = devm_gpiochip_add_data(dev, gpio_chip, p);
 	if (ret) {
-		dev_err(&pdev->dev, "failed to add GPIO controller\n");
+		dev_err(dev, "failed to add GPIO controller\n");
 		return ret;
 	}
 
diff --git a/drivers/gpio/gpio-ep93xx.c b/drivers/gpio/gpio-ep93xx.c
index a90870a60c15..226da8df6f10 100644
--- a/drivers/gpio/gpio-ep93xx.c
+++ b/drivers/gpio/gpio-ep93xx.c
@@ -269,56 +269,6 @@ static struct irq_chip ep93xx_gpio_irq_chip = {
 	.irq_set_type	= ep93xx_gpio_irq_type,
 };
 
-static int ep93xx_gpio_init_irq(struct platform_device *pdev,
-				struct ep93xx_gpio *epg)
-{
-	int ab_parent_irq = platform_get_irq(pdev, 0);
-	struct device *dev = &pdev->dev;
-	int gpio_irq;
-	int ret;
-	int i;
-
-	/* The A bank */
-	ret = gpiochip_irqchip_add(&epg->gc[0], &ep93xx_gpio_irq_chip,
-                                   64, handle_level_irq,
-                                   IRQ_TYPE_NONE);
-	if (ret) {
-		dev_err(dev, "Could not add irqchip 0\n");
-