diff options
Diffstat (limited to 'target/linux/ifxmips/patches-2.6.30/150-wdt.patch')
| -rw-r--r-- | target/linux/ifxmips/patches-2.6.30/150-wdt.patch | 212 |
1 files changed, 206 insertions, 6 deletions
diff --git a/target/linux/ifxmips/patches-2.6.30/150-wdt.patch b/target/linux/ifxmips/patches-2.6.30/150-wdt.patch index 9f589163a..8e668da9a 100644 --- a/target/linux/ifxmips/patches-2.6.30/150-wdt.patch +++ b/target/linux/ifxmips/patches-2.6.30/150-wdt.patch @@ -1,7 +1,7 @@ -Index: linux-2.6.30.5/drivers/watchdog/Makefile +Index: linux-2.6.30.8/drivers/watchdog/Makefile =================================================================== ---- linux-2.6.30.5.orig/drivers/watchdog/Makefile 2009-08-16 23:19:38.000000000 +0200 -+++ linux-2.6.30.5/drivers/watchdog/Makefile 2009-09-02 18:29:51.000000000 +0200 +--- linux-2.6.30.8.orig/drivers/watchdog/Makefile 2009-09-24 17:28:02.000000000 +0200 ++++ linux-2.6.30.8/drivers/watchdog/Makefile 2009-10-19 21:31:32.000000000 +0200 @@ -105,6 +105,7 @@ obj-$(CONFIG_SIBYTE_WDOG) += sb_wdog.o obj-$(CONFIG_AR7_WDT) += ar7_wdt.o @@ -10,10 +10,10 @@ Index: linux-2.6.30.5/drivers/watchdog/Makefile # PARISC Architecture -Index: linux-2.6.30.5/drivers/watchdog/Kconfig +Index: linux-2.6.30.8/drivers/watchdog/Kconfig =================================================================== ---- linux-2.6.30.5.orig/drivers/watchdog/Kconfig 2009-08-16 23:19:38.000000000 +0200 -+++ linux-2.6.30.5/drivers/watchdog/Kconfig 2009-09-02 18:29:51.000000000 +0200 +--- linux-2.6.30.8.orig/drivers/watchdog/Kconfig 2009-09-24 17:28:02.000000000 +0200 ++++ linux-2.6.30.8/drivers/watchdog/Kconfig 2009-10-19 21:31:32.000000000 +0200 @@ -764,6 +764,12 @@ help Hardware driver for the built-in watchdog timer on TXx9 MIPS SoCs. @@ -27,3 +27,203 @@ Index: linux-2.6.30.5/drivers/watchdog/Kconfig # PARISC Architecture # POWERPC Architecture +Index: linux-2.6.30.8/drivers/watchdog/ifxmips_wdt.c +=================================================================== +--- /dev/null 1970-01-01 00:00:00.000000000 +0000 ++++ linux-2.6.30.8/drivers/watchdog/ifxmips_wdt.c 2009-10-19 21:40:17.000000000 +0200 +@@ -0,0 +1,195 @@ ++/* ++ * 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 wdt driver ++ */ ++ ++#include <linux/module.h> ++#include <linux/fs.h> ++#include <linux/miscdevice.h> ++#include <linux/miscdevice.h> ++#include <linux/watchdog.h> ++#include <linux/platform_device.h> ++#include <linux/uaccess.h> ++ ++#include <ifxmips.h> ++#include <ifxmips_cgu.h> ++ ++#define IFXMIPS_WDT_PW1 0x00BE0000 ++#define IFXMIPS_WDT_PW2 0x00DC0000 ++ ++#ifndef CONFIG_WATCHDOG_NOWAYOUT ++static int wdt_ok_to_close; ++#endif ++ ++static int wdt_timeout = 30; ++ ++int ifxmips_wdt_enable(unsigned int timeout) ++{ ++ u32 fpi; ++ fpi = cgu_get_io_region_clock(); ++ ifxmips_w32(IFXMIPS_WDT_PW1, IFXMIPS_BIU_WDT_CR); ++ ifxmips_w32(IFXMIPS_WDT_PW2 | ++ (0x3 << 26) | /* PWL */ ++ (0x3 << 24) | /* CLKDIV */ ++ (0x1 << 31) | /* enable */ ++ ((timeout * (fpi / 0x40000)) + 0x1000), /* reload */ ++ IFXMIPS_BIU_WDT_CR); ++ return 0; ++} ++ ++void ifxmips_wdt_disable(void) ++{ ++#ifndef CONFIG_WATCHDOG_NOWAYOUT ++ wdt_ok_to_close = 0; ++#endif ++ ifxmips_w32(IFXMIPS_WDT_PW1, IFXMIPS_BIU_WDT_CR); ++ ifxmips_w32(IFXMIPS_WDT_PW2, IFXMIPS_BIU_WDT_CR); ++} ++ ++static ssize_t ifxmips_wdt_write(struct file *file, const char __user *data, ++ size_t len, loff_t *ppos) ++{ ++ size_t i; ++ ++ if (!len) ++ return 0; ++ ++#ifndef CONFIG_WATCHDOG_NOWAYOUT ++ for (i = 0; i != len; i++) { ++ char c; ++ if (get_user(c, data + i)) ++ return -EFAULT; ++ if (c == 'V') ++ wdt_ok_to_close = 1; ++ } ++#endif ++ ifxmips_wdt_enable(wdt_timeout); ++ return len; ++} ++ ++static struct watchdog_info ident = { ++ .options = WDIOF_MAGICCLOSE, ++ .identity = "ifxmips Watchdog", ++}; ++ ++static int ifxmips_wdt_ioctl(struct inode *inode, struct file *file, ++ unsigned int cmd, unsigned long arg) ++{ ++ int ret = -ENOTTY; ++ ++ switch (cmd) { ++ case WDIOC_GETSUPPORT: ++ ret = copy_to_user((struct watchdog_info __user *)arg, &ident, ++ sizeof(ident)) ? -EFAULT : 0; ++ break; ++ ++ case WDIOC_GETTIMEOUT: ++ ret = put_user(wdt_timeout, (int __user *)arg); ++ break; ++ ++ case WDIOC_SETTIMEOUT: ++ ret = get_user(wdt_timeout, (int __user *)arg); ++ break; ++ ++ case WDIOC_KEEPALIVE: ++ ifxmips_wdt_enable(wdt_timeout); ++ ret = 0; ++ break; ++ } ++ return ret; ++} ++ ++static int ifxmips_wdt_open(struct inode *inode, struct file *file) ++{ ++ ifxmips_wdt_enable(wdt_timeout); ++ return nonseekable_open(inode, file); ++} ++ ++static int ifxmips_wdt_release(struct inode *inode, struct file *file) ++{ ++#ifndef CONFIG_WATCHDOG_NOWAYOUT ++ if (wdt_ok_to_close) ++ ifxmips_wdt_disable(); ++ else ++#endif ++ printk(KERN_ERR "ifxmips_wdt: watchdog closed without warning," ++ " rebooting system\n"); ++ return 0; ++} ++ ++static const struct file_operations ifxmips_wdt_fops = { ++ .owner = THIS_MODULE, ++ .write = ifxmips_wdt_write, ++ .ioctl = ifxmips_wdt_ioctl, ++ .open = ifxmips_wdt_open, ++ .release = ifxmips_wdt_release, ++}; ++ ++static struct miscdevice ifxmips_wdt_miscdev = { ++ .minor = WATCHDOG_MINOR, ++ .name = "watchdog", ++ .fops = &ifxmips_wdt_fops, ++}; ++ ++static int ifxmips_wdt_probe(struct platform_device *dev) ++{ ++ int err; ++ err = misc_register(&ifxmips_wdt_miscdev); ++ if (err) ++ printk(KERN_INFO "ifxmips_wdt: error creating device\n"); ++ else ++ printk(KERN_INFO "ifxmips_wdt: loaded\n"); ++ return err; ++} ++ ++static int ifxmips_wdt_remove(struct platform_device *dev) ++{ ++ ifxmips_wdt_disable(); ++ misc_deregister(&ifxmips_wdt_miscdev); ++ return 0; ++} ++ ++ ++static struct platform_driver ifxmips_wdt_driver = { ++ .probe = ifxmips_wdt_probe, ++ .remove = ifxmips_wdt_remove, ++ .driver = { ++ .name = "ifxmips_wdt", ++ .owner = THIS_MODULE, ++ }, ++}; ++ ++static int __init init_ifxmips_wdt(void) ++{ ++ int ret = platform_driver_register(&ifxmips_wdt_driver); ++ if (ret) ++ printk(KERN_INFO "ifxmips_wdt: error registering platfom driver!"); ++ return ret; ++} ++ ++static void __exit exit_ifxmips_wdt(void) ++{ ++ platform_driver_unregister(&ifxmips_wdt_driver); ++} ++ ++module_init(init_ifxmips_wdt); ++module_exit(exit_ifxmips_wdt); ++ ++MODULE_AUTHOR("John Crispin <blogic@openwrt.org>"); ++MODULE_DESCRIPTION("ifxmips Watchdog"); ++MODULE_LICENSE("GPL"); ++MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR); |