[PATCH 2/4] gpio: rockchip: get irq support for both dt and acpi

[Jianqun Xu <jay.xu@xxxxxxxxxxxxxx>]

Get the irq of gpio controller with fwnode apis, support for both dt
node and acpi.

Signed-off-by: Jianqun Xu <jay.xu@xxxxxxxxxxxxxx>
---
 drivers/gpio/gpio-rockchip.c | 28 +++++++++++++++++++++++-----
 1 file changed, 23 insertions(+), 5 deletions(-)

diff --git a/drivers/gpio/gpio-rockchip.c b/drivers/gpio/gpio-rockchip.c
index b67038572285..3703c3d71809 100644
--- a/drivers/gpio/gpio-rockchip.c
+++ b/drivers/gpio/gpio-rockchip.c
@@ -5,7 +5,7 @@
  *
  * Copyright (c) 2021 Rockchip Electronics Co. Ltd.
  */
-
+#include <linux/acpi.h>
 #include <linux/bitops.h>
 #include <linux/clk.h>
 #include <linux/device.h>
@@ -639,10 +639,6 @@ static int rockchip_get_bank_data(struct rockchip_pin_bank *bank)
 {
 	int id = 0;
 
-	bank->irq = irq_of_parse_and_map(bank->of_node, 0);
-	if (!bank->irq)
-		return -EINVAL;
-
 	bank->clk = of_clk_get(bank->of_node, 0);
 	if (IS_ERR(bank->clk))
 		return PTR_ERR(bank->clk);
@@ -668,6 +664,24 @@ static int rockchip_get_bank_data(struct rockchip_pin_bank *bank)
 	return 0;
 }
 
+static int rockchip_gpio_get_irq(struct rockchip_pin_bank *bank)
+{
+	struct device *dev = bank->dev;
+	struct fwnode_handle *fwnode = dev_fwnode(dev);
+	struct device_node *np = NULL;
+	int irq = 0;
+
+	if (fwnode_property_read_bool(fwnode, "interrupt-controller"))
+		np = to_of_node(fwnode);
+
+	if (np)
+		irq = irq_of_parse_and_map(np, 0);
+	else if (has_acpi_companion(dev))
+		irq = platform_get_irq_optional(to_platform_device(dev), 0);
+
+	return irq;
+}
+
 static struct rockchip_pin_bank *
 rockchip_gpio_find_bank(struct pinctrl_dev *pctldev, int id)
 {
@@ -721,6 +735,10 @@ static int rockchip_gpio_probe(struct platform_device *pdev)
 	if (IS_ERR(bank->reg_base))
 		return PTR_ERR(bank->reg_base);
 
+	bank->irq = rockchip_gpio_get_irq(bank);
+	if (bank->irq < 0)
+		return bank->irq;
+
 	ret = rockchip_get_bank_data(bank);
 	if (ret)
 		return ret;
-- 
2.25.1