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ramips: gpio: use devm_platform_ioremap_resource()

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Simplify the code.

Signed-off-by: Shiji Yang <yangshiji66@qq.com>
This commit is contained in:
Shiji Yang 2024-06-28 15:36:13 +08:00 committed by Hauke Mehrtens
parent 256f1648e7
commit 7be6323d3f
1 changed files with 6 additions and 14 deletions
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20
target/linux/ramips/patches-6.6/802-GPIO-MIPS-ralink-add-gpio-driver-for-ralink-SoC.patch
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@ -9,8 +9,8 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
---
drivers/gpio/Kconfig | 6 +
drivers/gpio/Makefile | 1 +
drivers/gpio/gpio-ralink.c | 336 +++++++++++++++++++++++++++++++++++++
3 files changed, 343 insertions(+)
drivers/gpio/gpio-ralink.c | 328 +++++++++++++++++++++++++++++++++++++
3 files changed, 335 insertions(+)
create mode 100644 drivers/gpio/gpio-ralink.c
--- a/drivers/gpio/Kconfig
@ -40,7 +40,7 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
obj-$(CONFIG_GPIO_RCAR) += gpio-rcar.o
--- /dev/null
+++ b/drivers/gpio/gpio-ralink.c
@@ -0,0 +1,336 @@
@@ -0,0 +1,328 @@
+/*
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
@ -299,25 +299,17 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
+static int ralink_gpio_probe(struct platform_device *pdev)
+{
+ struct device_node *np = pdev->dev.of_node;
+ struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ struct ralink_gpio_chip *rg;
+ const __be32 *ngpio;
+
+ if (!res) {
+ dev_err(&pdev->dev, "failed to find resource\n");
+ return -ENOMEM;
+ }
+
+ rg = devm_kzalloc(&pdev->dev,
+ sizeof(struct ralink_gpio_chip), GFP_KERNEL);
+ if (!rg)
+ return -ENOMEM;
+
+ rg->membase = devm_ioremap_resource(&pdev->dev, res);
+ if (!rg->membase) {
+ dev_err(&pdev->dev, "cannot remap I/O memory region\n");
+ return -ENOMEM;
+ }
+ rg->membase = devm_platform_ioremap_resource(pdev, 0);
+ if (IS_ERR(rg->membase))
+ return PTR_ERR(rg->membase);
+
+ if (of_property_read_u8_array(np, "ralink,register-map",
+ rg->regs, GPIO_REG_MAX)) {