mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2025-04-21 12:27:27 +03:00
[lantiq] 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.
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@24526 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
blogic
246
target/linux/lantiq/patches/250-watchdog.patch
Normal file
246
target/linux/lantiq/patches/250-watchdog.patch
Normal file
@@ -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);
|
||||
Reference in New Issue
Block a user