1 files changed, 21 insertions, 27 deletions

diff --git a/drivers/gpio/gpio-sifive.c b/drivers/gpio/gpio-sifive.c
index 745e5f67254e..8decd9b5d229 100644
--- a/drivers/gpio/gpio-sifive.c
+++ b/drivers/gpio/gpio-sifive.c
@@ -6,10 +6,10 @@
 #include <linux/bitops.h>
 #include <linux/device.h>
 #include <linux/errno.h>
-#include <linux/of_irq.h>
 #include <linux/gpio/driver.h>
 #include <linux/init.h>
 #include <linux/platform_device.h>
+#include <linux/property.h>
 #include <linux/slab.h>
 #include <linux/spinlock.h>
 #include <linux/regmap.h>
@@ -150,6 +150,7 @@ static const struct irq_chip sifive_gpio_irqchip = {
 	.irq_disable	= sifive_gpio_irq_disable,
 	.irq_eoi	= sifive_gpio_irq_eoi,
 	.irq_set_affinity = sifive_gpio_irq_set_affinity,
+	.irq_set_wake	= irq_chip_set_wake_parent,
 	.flags		= IRQCHIP_IMMUTABLE,
 	GPIOCHIP_IRQ_RESOURCE_HELPERS,
 };
@@ -180,12 +181,10 @@ static const struct regmap_config sifive_gpio_regmap_config = {
 static int sifive_gpio_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
-	struct device_node *node = pdev->dev.of_node;
-	struct device_node *irq_parent;
 	struct irq_domain *parent;
 	struct gpio_irq_chip *girq;
 	struct sifive_gpio *chip;
-	int ret, ngpio, i;
+	int ret, ngpio;
 
 	chip = devm_kzalloc(dev, sizeof(*chip), GFP_KERNEL);
 	if (!chip)
@@ -202,31 +201,22 @@ static int sifive_gpio_probe(struct platform_device *pdev)
 	if (IS_ERR(chip->regs))
 		return PTR_ERR(chip->regs);
 
-	ngpio = of_irq_count(node);
-	if (ngpio > SIFIVE_GPIO_MAX) {
-		dev_err(dev, "Too many GPIO interrupts (max=%d)\n",
-			SIFIVE_GPIO_MAX);
-		return -ENXIO;
-	}
-
-	irq_parent = of_irq_find_parent(node);
-	if (!irq_parent) {
-		dev_err(dev, "no IRQ parent node\n");
-		return -ENODEV;
+	for (ngpio = 0; ngpio < SIFIVE_GPIO_MAX; ngpio++) {
+		ret = platform_get_irq_optional(pdev, ngpio);
+		if (ret < 0)
+			break;
+		chip->irq_number[ngpio] = ret;
 	}
-	parent = irq_find_host(irq_parent);
-	of_node_put(irq_parent);
-	if (!parent) {
-		dev_err(dev, "no IRQ parent domain\n");
+	if (!ngpio) {
+		dev_err(dev, "no IRQ found\n");
 		return -ENODEV;
 	}
 
-	for (i = 0; i < ngpio; i++) {
-		ret = platform_get_irq(pdev, i);
-		if (ret < 0)
-			return ret;
-		chip->irq_number[i] = ret;
-	}
+	/*
+	 * The check above ensures at least one parent IRQ is valid.
+	 * Assume all parent IRQs belong to the same domain.
+	 */
+	parent = irq_get_irq_data(chip->irq_number[0])->domain;
 
 	ret = bgpio_init(&chip->gc, dev, 4,
 			 chip->base + SIFIVE_GPIO_INPUT_VAL,
@@ -254,7 +244,7 @@ static int sifive_gpio_probe(struct platform_device *pdev)
 	chip->gc.owner = THIS_MODULE;
 	girq = &chip->gc.irq;
 	gpio_irq_chip_set_chip(girq, &sifive_gpio_irqchip);
-	girq->fwnode = of_node_to_fwnode(node);
+	girq->fwnode = dev_fwnode(dev);
 	girq->parent_domain = parent;
 	girq->child_to_parent_hwirq = sifive_gpio_child_to_parent_hwirq;
 	girq->handler = handle_bad_irq;
@@ -277,4 +267,8 @@ static struct platform_driver sifive_gpio_driver = {
 		.of_match_table = sifive_gpio_match,
 	},
 };
-builtin_platform_driver(sifive_gpio_driver)
+module_platform_driver(sifive_gpio_driver)
+
+MODULE_AUTHOR("Yash Shah <yash.shah@sifive.com>");
+MODULE_DESCRIPTION("SiFive GPIO driver");
+MODULE_LICENSE("GPL");