linux-kernel - [PATCH 18/20] gpio/rockchip: make use of device property

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Date:   Tue, 20 Sep 2022 18:31:06 +0800
From:   Jianqun Xu <jay.xu@...k-chips.com>
To:     linus.walleij@...aro.org, heiko@...ech.de, brgl@...ev.pl,
        andriy.shevchenko@...ux.intel.com
Cc:     robert.moore@...el.com, robh@...nel.org,
        linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org,
        lenb@...nel.org, rafael@...nel.org,
        Jianqun Xu <jay.xu@...k-chips.com>
Subject: [PATCH 18/20] gpio/rockchip: make use of device property

Get the iomem resource by devm_platform_ioremap_resource and get the irq
by platform_get_irq.

Signed-off-by: Jianqun Xu <jay.xu@...k-chips.com>
---
 drivers/gpio/gpio-rockchip.c | 25 ++++++++++---------------
 1 file changed, 10 insertions(+), 15 deletions(-)

diff --git a/drivers/gpio/gpio-rockchip.c b/drivers/gpio/gpio-rockchip.c
index d08435619f12..a94ebd95d285 100644
--- a/drivers/gpio/gpio-rockchip.c
+++ b/drivers/gpio/gpio-rockchip.c
@@ -9,7 +9,6 @@
 #include <linux/acpi.h>
 #include <linux/bitops.h>
 #include <linux/clk.h>
-#include <linux/device.h>
 #include <linux/err.h>
 #include <linux/gpio/driver.h>
 #include <linux/init.h>
@@ -17,6 +16,8 @@
 #include <linux/io.h>
 #include <linux/module.h>
 #include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/property.h>
 #include <linux/of_address.h>
 #include <linux/of_device.h>
 #include <linux/of_irq.h>
@@ -651,22 +652,8 @@ static int rockchip_gpiolib_register(struct rockchip_pin_bank *bank)
 
 static int rockchip_get_bank_data(struct rockchip_pin_bank *bank)
 {
-	struct resource res;
 	int id = 0;
 
-	if (of_address_to_resource(bank->of_node, 0, &res)) {
-		dev_err(bank->dev, "cannot find IO resource for bank\n");
-		return -ENOENT;
-	}
-
-	bank->reg_base = devm_ioremap_resource(bank->dev, &res);
-	if (IS_ERR(bank->reg_base))
-		return PTR_ERR(bank->reg_base);
-
-	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);
@@ -765,6 +752,14 @@ static int rockchip_gpio_probe(struct platform_device *pdev)
 	if (ret)
 		return ret;
 
+	bank->reg_base = devm_platform_ioremap_resource(pdev, 0);
+	if (IS_ERR(bank->reg_base))
+		return PTR_ERR(bank->reg_base);
+
+	bank->irq = platform_get_irq(pdev, 0);
+	if (bank->irq < 0)
+		return bank->irq;
+
 	ret = rockchip_gpiolib_register(bank);
 	if (ret) {
 		dev_err(bank->dev, "Failed to register gpio %d\n", ret);
-- 
2.25.1