diff options
Diffstat (limited to 'target/linux/lantiq/patches/250-watchdog.patch')
| -rw-r--r-- | target/linux/lantiq/patches/250-watchdog.patch | 246 |
1 files changed, 0 insertions, 246 deletions
diff --git a/target/linux/lantiq/patches/250-watchdog.patch b/target/linux/lantiq/patches/250-watchdog.patch deleted file mode 100644 index 96875db..0000000 --- a/target/linux/lantiq/patches/250-watchdog.patch +++ /dev/null @@ -1,246 +0,0 @@ ---- a/drivers/watchdog/Kconfig -+++ b/drivers/watchdog/Kconfig -@@ -930,6 +930,12 @@ - To compile this driver as a loadable module, choose M here. - The module will be called bcm63xx_wdt. - -+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 -@@ -119,6 +119,7 @@ - obj-$(CONFIG_TXX9_WDT) += txx9wdt.o - obj-$(CONFIG_OCTEON_WDT) += octeon-wdt.o - octeon-wdt-y := octeon-wdt-main.o octeon-wdt-nmi.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 0x0 -+#define LQ_BIU_WDT_SR 0x8 -+ -+#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 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, -+ .unlocked_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); |