From: Linus Walleij <linus.walleij@linaro.org>
Date: Fri, 1 Apr 2016 13:21:27 +0000 (+0200)
Subject: Revert "Revert "pinctrl: lantiq: Implement gpio_chip.to_irq""
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=e1641c9d174ee21b4a75a64ab6df9063cf60ac4a;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

Revert "Revert "pinctrl: lantiq: Implement gpio_chip.to_irq""

This reverts commit 446f59acb70b70a425ea4105277a71eb615327cd.
---

diff --git a/drivers/pinctrl/pinctrl-xway.c b/drivers/pinctrl/pinctrl-xway.c
index 412c6b78140a..a13f2b6f6fc0 100644
--- a/drivers/pinctrl/pinctrl-xway.c
+++ b/drivers/pinctrl/pinctrl-xway.c
@@ -1573,6 +1573,22 @@ static int xway_gpio_dir_out(struct gpio_chip *chip, unsigned int pin, int val)
 	return 0;
 }
 
+/*
+ * gpiolib gpiod_to_irq callback function.
+ * Returns the mapped IRQ (external interrupt) number for a given GPIO pin.
+ */
+static int xway_gpio_to_irq(struct gpio_chip *chip, unsigned offset)
+{
+	struct ltq_pinmux_info *info = dev_get_drvdata(chip->parent);
+	int i;
+
+	for (i = 0; i < info->num_exin; i++)
+		if (info->exin[i] == offset)
+			return ltq_eiu_get_irq(i);
+
+	return -1;
+}
+
 static struct gpio_chip xway_chip = {
 	.label = "gpio-xway",
 	.direction_input = xway_gpio_dir_in,
@@ -1581,6 +1597,7 @@ static struct gpio_chip xway_chip = {
 	.set = xway_gpio_set,
 	.request = gpiochip_generic_request,
 	.free = gpiochip_generic_free,
+	.to_irq = xway_gpio_to_irq,
 	.base = -1,
 };