From 9d77db3c730780c8ef5ccd4b66403ff5675cfe4e Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Mon, 13 May 2024 10:30:14 +0000
Subject: [PATCH] modify sin led gpio
---
kernel/drivers/gpio/gpio-vr41xx.c | 76 +++----------------------------------
1 files changed, 7 insertions(+), 69 deletions(-)
diff --git a/kernel/drivers/gpio/gpio-vr41xx.c b/kernel/drivers/gpio/gpio-vr41xx.c
index 027699c..8d09b61 100644
--- a/kernel/drivers/gpio/gpio-vr41xx.c
+++ b/kernel/drivers/gpio/gpio-vr41xx.c
@@ -1,27 +1,14 @@
+// SPDX-License-Identifier: GPL-2.0+
/*
* Driver for NEC VR4100 series General-purpose I/O Unit.
*
* Copyright (C) 2002 MontaVista Software Inc.
* Author: Yoichi Yuasa <source@mvista.com>
* Copyright (C) 2003-2009 Yoichi Yuasa <yuasa@linux-mips.org>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <linux/errno.h>
#include <linux/fs.h>
-#include <linux/gpio.h>
+#include <linux/gpio/driver.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/io.h>
@@ -230,8 +217,6 @@
printk(KERN_ERR "spurious GIU interrupt: %04x(%04x),%04x(%04x)\n",
maskl, pendl, maskh, pendh);
- atomic_inc(&irq_err_count);
-
return -EINVAL;
}
@@ -384,44 +369,6 @@
return 0;
}
-int vr41xx_gpio_pullupdown(unsigned int pin, gpio_pull_t pull)
-{
- u16 reg, mask;
- unsigned long flags;
-
- if ((giu_flags & GPIO_HAS_PULLUPDOWN_IO) != GPIO_HAS_PULLUPDOWN_IO)
- return -EPERM;
-
- if (pin >= 15)
- return -EINVAL;
-
- mask = 1 << pin;
-
- spin_lock_irqsave(&giu_lock, flags);
-
- if (pull == GPIO_PULL_UP || pull == GPIO_PULL_DOWN) {
- reg = giu_read(GIUTERMUPDN);
- if (pull == GPIO_PULL_UP)
- reg |= mask;
- else
- reg &= ~mask;
- giu_write(GIUTERMUPDN, reg);
-
- reg = giu_read(GIUUSEUPDN);
- reg |= mask;
- giu_write(GIUUSEUPDN, reg);
- } else {
- reg = giu_read(GIUUSEUPDN);
- reg &= ~mask;
- giu_write(GIUUSEUPDN, reg);
- }
-
- spin_unlock_irqrestore(&giu_lock, flags);
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(vr41xx_gpio_pullupdown);
-
static int vr41xx_gpio_get(struct gpio_chip *chip, unsigned pin)
{
u16 reg, mask;
@@ -518,10 +465,9 @@
static int giu_probe(struct platform_device *pdev)
{
- struct resource *res;
unsigned int trigger, i, pin;
struct irq_chip *chip;
- int irq, ret;
+ int irq;
switch (pdev->id) {
case GPIO_50PINS_PULLUPDOWN:
@@ -540,21 +486,14 @@
return -ENODEV;
}
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!res)
- return -EBUSY;
-
- giu_base = ioremap(res->start, resource_size(res));
- if (!giu_base)
- return -ENOMEM;
+ giu_base = devm_platform_ioremap_resource(pdev, 0);
+ if (IS_ERR(giu_base))
+ return PTR_ERR(giu_base);
vr41xx_gpio_chip.parent = &pdev->dev;
- ret = gpiochip_add_data(&vr41xx_gpio_chip, NULL);
- if (!ret) {
- iounmap(giu_base);
+ if (gpiochip_add_data(&vr41xx_gpio_chip, NULL))
return -ENODEV;
- }
giu_write(GIUINTENL, 0);
giu_write(GIUINTENH, 0);
@@ -585,7 +524,6 @@
static int giu_remove(struct platform_device *pdev)
{
if (giu_base) {
- iounmap(giu_base);
giu_base = NULL;
}
--
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