mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-12-28 17:48:58 +02:00
adds watchdog driver to ar5315
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@12309 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
blogic
parent
cbadcab30f
commit
18842f8755
@ -242,3 +242,4 @@ CONFIG_VIDEO_V4L1=m
|
||||
CONFIG_VIDEO_V4L2=m
|
||||
CONFIG_VIDEO_V4L2_COMMON=m
|
||||
CONFIG_ZONE_DMA_FLAG=0
|
||||
CONFIG_ATHEROS_WDT=y
|
||||
|
||||
@ -109,7 +109,13 @@ static struct platform_device ar5315_gpio_leds = {
|
||||
};
|
||||
#endif
|
||||
|
||||
static __initdata struct platform_device *ar5315_devs[5];
|
||||
static struct platform_device ar5315_wdt =
|
||||
{
|
||||
.id = 0,
|
||||
.name = "ar2315_wdt",
|
||||
};
|
||||
|
||||
static __initdata struct platform_device *ar5315_devs[6];
|
||||
|
||||
static void *flash_regs;
|
||||
|
||||
@ -243,6 +249,7 @@ int __init ar5315_init_devices(void)
|
||||
ar5315_devs[dev++] = &ar5315_eth;
|
||||
ar5315_devs[dev++] = &ar5315_wmac;
|
||||
ar5315_devs[dev++] = &ar5315_spiflash;
|
||||
ar5315_devs[dev++] = &ar5315_wdt;
|
||||
|
||||
#ifdef CONFIG_LEDS_GPIO
|
||||
ar5315_led_data.num_leds = 0;
|
||||
|
||||
198
target/linux/atheros/files/drivers/watchdog/ar2315-wtd.c
Normal file
198
target/linux/atheros/files/drivers/watchdog/ar2315-wtd.c
Normal file
@ -0,0 +1,198 @@
|
||||
/*
|
||||
* 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
|
||||
*
|
||||
* Copyright (C) 2008 John Crispin <blogic@openwrt.org>
|
||||
* Based on EP93xx and ifxmips wdt driver
|
||||
*/
|
||||
|
||||
#include <linux/interrupt.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/moduleparam.h>
|
||||
#include <linux/types.h>
|
||||
#include <linux/miscdevice.h>
|
||||
#include <linux/watchdog.h>
|
||||
#include <linux/fs.h>
|
||||
#include <linux/ioport.h>
|
||||
#include <linux/notifier.h>
|
||||
#include <linux/reboot.h>
|
||||
#include <linux/init.h>
|
||||
#include <linux/platform_device.h>
|
||||
|
||||
#include <asm/io.h>
|
||||
#include <asm/uaccess.h>
|
||||
#include <asm/system.h>
|
||||
#include <asm/addrspace.h>
|
||||
#include <ar531x.h>
|
||||
|
||||
#define CLOCK_RATE 40000000
|
||||
#define HEARTBEAT(x) (x < 1 || x > 90)?(20):(x)
|
||||
|
||||
static int wdt_timeout = 20;
|
||||
static int started = 0;
|
||||
static int in_use = 0;
|
||||
|
||||
static void
|
||||
ar2315_wdt_enable(void)
|
||||
{
|
||||
sysRegWrite(AR5315_WD, wdt_timeout * CLOCK_RATE);
|
||||
sysRegWrite(AR5315_ISR, 0x80);
|
||||
}
|
||||
|
||||
static ssize_t
|
||||
ar2315_wdt_write(struct file *file, const char __user *data, size_t len, loff_t *ppos)
|
||||
{
|
||||
if(len)
|
||||
ar2315_wdt_enable();
|
||||
return len;
|
||||
}
|
||||
|
||||
static int
|
||||
ar2315_wdt_open(struct inode *inode, struct file *file)
|
||||
{
|
||||
if(in_use)
|
||||
return -EBUSY;
|
||||
ar2315_wdt_enable();
|
||||
in_use = started = 1;
|
||||
return nonseekable_open(inode, file);
|
||||
}
|
||||
|
||||
static int
|
||||
ar2315_wdt_release(struct inode *inode, struct file *file)
|
||||
{
|
||||
in_use = 0;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static irqreturn_t
|
||||
ar2315_wdt_interrupt(int irq, void *dev_id)
|
||||
{
|
||||
if(started)
|
||||
{
|
||||
printk(KERN_CRIT "watchdog expired, rebooting system\n");
|
||||
sysRegWrite(AR5315_COLD_RESET, RESET_SYSTEM);
|
||||
} else {
|
||||
sysRegWrite(AR5315_WDC, 0);
|
||||
sysRegWrite(AR5315_WD, 0);
|
||||
sysRegWrite(AR5315_ISR, 0x80);
|
||||
}
|
||||
return IRQ_HANDLED;
|
||||
}
|
||||
|
||||
static struct watchdog_info ident = {
|
||||
.options = WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING,
|
||||
.identity = "ar2315 Watchdog",
|
||||
};
|
||||
|
||||
static int
|
||||
ar2315_wdt_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
|
||||
{
|
||||
int new_wdt_timeout;
|
||||
int ret = -ENOIOCTLCMD;
|
||||
|
||||
switch(cmd)
|
||||
{
|
||||
case WDIOC_GETSUPPORT:
|
||||
ret = copy_to_user((struct watchdog_info __user *)arg, &ident, sizeof(ident)) ? -EFAULT : 0;
|
||||
break;
|
||||
|
||||
case WDIOC_KEEPALIVE:
|
||||
ar2315_wdt_enable();
|
||||
ret = 0;
|
||||
break;
|
||||
|
||||
case WDIOC_SETTIMEOUT:
|
||||
if((ret = get_user(new_wdt_timeout, (int __user *)arg)))
|
||||
break;
|
||||
wdt_timeout = HEARTBEAT(new_wdt_timeout);
|
||||
ar2315_wdt_enable();
|
||||
break;
|
||||
|
||||
case WDIOC_GETTIMEOUT:
|
||||
ret = put_user(wdt_timeout, (int __user *)arg);
|
||||
break;
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
static struct file_operations ar2315_wdt_fops = {
|
||||
.owner = THIS_MODULE,
|
||||
.llseek = no_llseek,
|
||||
.write = ar2315_wdt_write,
|
||||
.ioctl = ar2315_wdt_ioctl,
|
||||
.open = ar2315_wdt_open,
|
||||
.release = ar2315_wdt_release,
|
||||
};
|
||||
|
||||
static struct miscdevice ar2315_wdt_miscdev = {
|
||||
.minor = WATCHDOG_MINOR,
|
||||
.name = "watchdog",
|
||||
.fops = &ar2315_wdt_fops,
|
||||
};
|
||||
|
||||
static int
|
||||
ar2315_wdt_probe(struct platform_device *dev)
|
||||
{
|
||||
int ret = 0;
|
||||
|
||||
ar2315_wdt_enable();
|
||||
ret = request_irq(AR531X_MISC_IRQ_WATCHDOG, ar2315_wdt_interrupt, IRQF_DISABLED, "ar2315_wdt", NULL);
|
||||
if(ret)
|
||||
{
|
||||
printk(KERN_ERR "ar2315wdt: failed to register inetrrupt\n");
|
||||
goto out;
|
||||
}
|
||||
|
||||
ret = misc_register(&ar2315_wdt_miscdev);
|
||||
if(ret)
|
||||
printk(KERN_ERR "ar2315wdt: failed to register miscdev\n");
|
||||
|
||||
out:
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int
|
||||
ar2315_wdt_remove(struct platform_device *dev)
|
||||
{
|
||||
misc_deregister(&ar2315_wdt_miscdev);
|
||||
free_irq(AR531X_MISC_IRQ_WATCHDOG, NULL);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct platform_driver ar2315_wdt_driver = {
|
||||
.probe = ar2315_wdt_probe,
|
||||
.remove = ar2315_wdt_remove,
|
||||
.driver = {
|
||||
.name = "ar2315_wdt",
|
||||
.owner = THIS_MODULE,
|
||||
},
|
||||
};
|
||||
|
||||
static int __init
|
||||
init_ar2315_wdt(void)
|
||||
{
|
||||
int ret = platform_driver_register(&ar2315_wdt_driver);
|
||||
if(ret)
|
||||
printk(KERN_INFO "ar2315_wdt: error registering platfom driver!");
|
||||
return ret;
|
||||
}
|
||||
|
||||
static void __exit
|
||||
exit_ar2315_wdt(void)
|
||||
{
|
||||
platform_driver_unregister(&ar2315_wdt_driver);
|
||||
}
|
||||
|
||||
module_init(init_ar2315_wdt);
|
||||
module_exit(exit_ar2315_wdt);
|
||||
29
target/linux/atheros/patches-2.6.26/120-watchdog.patch
Normal file
29
target/linux/atheros/patches-2.6.26/120-watchdog.patch
Normal file
@ -0,0 +1,29 @@
|
||||
Index: linux-2.6.26.2/drivers/watchdog/Kconfig
|
||||
===================================================================
|
||||
--- linux-2.6.26.2.orig/drivers/watchdog/Kconfig 2008-08-14 16:54:30.000000000 +0200
|
||||
+++ linux-2.6.26.2/drivers/watchdog/Kconfig 2008-08-14 16:55:40.000000000 +0200
|
||||
@@ -683,6 +683,12 @@
|
||||
help
|
||||
Hardware driver for the built-in watchdog timer on TXx9 MIPS SoCs.
|
||||
|
||||
+config ATHEROS_WDT
|
||||
+ tristate "Atheros wisoc Watchdog Timer"
|
||||
+ depends on ATHEROS
|
||||
+ help
|
||||
+ Hardware driver for the Atheros wisoc Watchdog Timer.
|
||||
+
|
||||
# PARISC Architecture
|
||||
|
||||
# POWERPC Architecture
|
||||
Index: linux-2.6.26.2/drivers/watchdog/Makefile
|
||||
===================================================================
|
||||
--- linux-2.6.26.2.orig/drivers/watchdog/Makefile 2008-08-14 16:55:44.000000000 +0200
|
||||
+++ linux-2.6.26.2/drivers/watchdog/Makefile 2008-08-14 16:58:16.000000000 +0200
|
||||
@@ -97,6 +97,7 @@
|
||||
obj-$(CONFIG_SIBYTE_WDOG) += sb_wdog.o
|
||||
obj-$(CONFIG_AR7_WDT) += ar7_wdt.o
|
||||
obj-$(CONFIG_TXX9_WDT) += txx9wdt.o
|
||||
+obj-$(CONFIG_ATHEROS_WDT) += ar2315-wtd.o
|
||||
|
||||
# PARISC Architecture
|
||||
|
||||
Loading…
Reference in New Issue
Block a user