adds new lantiq kernel. once the codebase is fully tested and know to be working on all the devices previously supported by ifxmips, we will drop ifxmips support.

SVN-Revision: 24526

1 files changed, 246 insertions, 0 deletions

diff --git a/target/linux/lantiq/patches/250-watchdog.patch b/target/linux/lantiq/patches/250-watchdog.patch
new file mode 100644
index 0000000000..f86ff71868
--- /dev/null
+++ b/target/linux/lantiq/patches/250-watchdog.patch
@@ -0,0 +1,246 @@
+--- a/drivers/watchdog/Kconfig
++++ b/drivers/watchdog/Kconfig
+@@ -840,6 +840,12 @@ config TXX9_WDT
+ 	help
+ 	  Hardware driver for the built-in watchdog timer on TXx9 MIPS SoCs.
+ 
++config LANTIQ_WDT
++	bool "Lantiq SoC watchdog"
++	depends on LANTIQ
++	help
++	  Hardware driver for the Lantiq SoC Watchdog Timer.
++
+ # PARISC Architecture
+ 
+ # POWERPC Architecture
+--- a/drivers/watchdog/Makefile
++++ b/drivers/watchdog/Makefile
+@@ -112,6 +112,7 @@ obj-$(CONFIG_PNX833X_WDT) += pnx833x_wdt
+ obj-$(CONFIG_SIBYTE_WDOG) += sb_wdog.o
+ obj-$(CONFIG_AR7_WDT) += ar7_wdt.o
+ obj-$(CONFIG_TXX9_WDT) += txx9wdt.o
++obj-$(CONFIG_LANTIQ_WDT) += lantiq_wdt.o
+ 
+ # PARISC Architecture
+ 
+--- /dev/null
++++ b/drivers/watchdog/lantiq_wdt.c
+@@ -0,0 +1,218 @@
++/*
++ *  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
++ *  by the Free Software Foundation.
++ *
++ *  Copyright (C) 2010 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 <linux/clk.h>
++
++#include <lantiq.h>
++
++#define LQ_WDT_PW1			0x00BE0000
++#define LQ_WDT_PW2			0x00DC0000
++
++#define LQ_BIU_WDT_CR		0x3F0
++#define LQ_BIU_WDT_SR		0x3F8
++
++#ifndef CONFIG_WATCHDOG_NOWAYOUT
++static int wdt_ok_to_close;
++#endif
++
++static int wdt_timeout = 30;
++static __iomem void *wdt_membase = NULL;
++static unsigned long io_region_clk = 0;
++
++static int
++lq_wdt_enable(unsigned int timeout)
++{
++/*	printk("%s:%s[%d] %08X\n",
++		__FILE__, __func__, __LINE__,
++		lq_r32(wdt_membase + LQ_BIU_WDT_SR));
++	if(!lq_r32(wdt_membase + LQ_BIU_WDT_SR))
++	{
++*/	lq_w32(LQ_WDT_PW1, wdt_membase + LQ_BIU_WDT_CR);
++	lq_w32(LQ_WDT_PW2 |
++		(0x3 << 26) | /* PWL */
++		(0x3 << 24) | /* CLKDIV */
++		(0x1 << 31) | /* enable */
++		((timeout * (io_region_clk / 0x40000)) + 0x1000), /* reload */
++			wdt_membase + LQ_BIU_WDT_CR);
++//	}
++	return 0;
++}
++
++static void
++lq_wdt_disable(void)
++{
++#ifndef CONFIG_WATCHDOG_NOWAYOUT
++	wdt_ok_to_close = 0;
++#endif
++	lq_w32(LQ_WDT_PW1, wdt_membase + LQ_BIU_WDT_CR);
++	lq_w32(LQ_WDT_PW2, wdt_membase+ LQ_BIU_WDT_CR);
++}
++
++static ssize_t
++lq_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
++	lq_wdt_enable(wdt_timeout);
++	return len;
++}
++
++static struct watchdog_info ident = {
++	.options = WDIOF_MAGICCLOSE,
++	.identity = "lq_wdt",
++};
++
++static int
++lq_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:
++		lq_wdt_enable(wdt_timeout);
++		ret = 0;
++		break;
++	}
++	return ret;
++}
++
++static int
++lq_wdt_open(struct inode *inode, struct file *file)
++{
++	lq_wdt_enable(wdt_timeout);
++	return nonseekable_open(inode, file);
++}
++
++static int
++lq_wdt_release(struct inode *inode, struct file *file)
++{
++#ifndef CONFIG_WATCHDOG_NOWAYOUT
++	if (wdt_ok_to_close)
++		lq_wdt_disable();
++	else
++#endif
++		printk(KERN_ERR "lq_wdt: watchdog closed without warning,"
++			" rebooting system\n");
++	return 0;
++}
++
++static const struct file_operations lq_wdt_fops = {
++	.owner		= THIS_MODULE,
++	.write		= lq_wdt_write,
++	.ioctl		= lq_wdt_ioctl,
++	.open		= lq_wdt_open,
++	.release	= lq_wdt_release,
++};
++
++static struct miscdevice lq_wdt_miscdev = {
++	.minor		= WATCHDOG_MINOR,
++	.name		= "watchdog",
++	.fops		= &lq_wdt_fops,
++};
++
++static int
++lq_wdt_probe(struct platform_device *pdev)
++{
++	struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
++	struct clk *clk;
++	int ret = 0;
++	if(!res)
++		return -ENOENT;
++	res = request_mem_region(res->start, resource_size(res),
++		dev_name(&pdev->dev));
++	if(!res)
++		return -EBUSY;
++	wdt_membase = ioremap_nocache(res->start, resource_size(res));
++	if(!wdt_membase)
++	{
++		ret = -ENOMEM;
++		goto err_release_mem_region;
++	}
++	clk = clk_get(&pdev->dev, "io");
++	io_region_clk = clk_get_rate(clk);;
++	ret = misc_register(&lq_wdt_miscdev);
++	if(!ret)
++		return 0;
++
++	iounmap(wdt_membase);
++err_release_mem_region:
++	release_mem_region(res->start, resource_size(res));
++	return ret;
++}
++
++static int
++lq_wdt_remove(struct platform_device *dev)
++{
++	lq_wdt_disable();
++	misc_deregister(&lq_wdt_miscdev);
++	return 0;
++}
++
++static struct platform_driver lq_wdt_driver = {
++	.probe = lq_wdt_probe,
++	.remove = lq_wdt_remove,
++	.driver = {
++		.name = "lq_wdt",
++		.owner = THIS_MODULE,
++	},
++};
++
++static int __init
++init_lq_wdt(void)
++{
++	return platform_driver_register(&lq_wdt_driver);
++}
++
++static void __exit
++exit_lq_wdt(void)
++{
++	platform_driver_unregister(&lq_wdt_driver);
++}
++
++module_init(init_lq_wdt);
++module_exit(exit_lq_wdt);
++
++MODULE_AUTHOR("John Crispin <blogic@openwrt.org>");
++MODULE_DESCRIPTION("ifxmips Watchdog");
++MODULE_LICENSE("GPL");
++MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR);