diff options
Diffstat (limited to 'target/linux/coldfire/patches/075-mcfv4e_watchdog.patch')
| -rw-r--r-- | target/linux/coldfire/patches/075-mcfv4e_watchdog.patch | 265 |
1 files changed, 0 insertions, 265 deletions
diff --git a/target/linux/coldfire/patches/075-mcfv4e_watchdog.patch b/target/linux/coldfire/patches/075-mcfv4e_watchdog.patch deleted file mode 100644 index 5b865bdd32..0000000000 --- a/target/linux/coldfire/patches/075-mcfv4e_watchdog.patch +++ /dev/null @@ -1,265 +0,0 @@ -From 3c6c80a04d6ca99c4f9fbb5e4f279bd644b2df48 Mon Sep 17 00:00:00 2001 -From: Kurt Mahan <kmahan@freescale.com> -Date: Tue, 8 Jul 2008 14:10:46 -0600 -Subject: [PATCH] Add Coldfire Watchdog support. - -LTIBName: mcfv4e-watchdog -Signed-off-by: Kurt Mahan <kmahan@freescale.com> ---- - drivers/watchdog/Kconfig | 9 ++ - drivers/watchdog/Makefile | 1 + - drivers/watchdog/mcf_wdt.c | 220 ++++++++++++++++++++++++++++++++++++++++++++ - 3 files changed, 230 insertions(+), 0 deletions(-) - create mode 100644 drivers/watchdog/mcf_wdt.c - ---- a/drivers/watchdog/Kconfig -+++ b/drivers/watchdog/Kconfig -@@ -672,6 +672,15 @@ config TXX9_WDT - - # PARISC Architecture - -+# ColdFire Architecture -+ -+config COLDFIRE_WATCHDOG -+ tristate "ColdFire watchdog support" -+ depends on WATCHDOG -+ help -+ To compile this driver as a module, choose M here: the -+ module will be called softdog. -+ - # POWERPC Architecture - - config MPC5200_WDT ---- a/drivers/watchdog/Makefile -+++ b/drivers/watchdog/Makefile -@@ -86,6 +86,7 @@ obj-$(CONFIG_SBC_EPX_C3_WATCHDOG) += sbc - # M32R Architecture - - # M68K Architecture -+obj-$(CONFIG_COLDFIRE_WATCHDOG) += mcf_wdt.o - - # M68KNOMMU Architecture - ---- /dev/null -+++ b/drivers/watchdog/mcf_wdt.c -@@ -0,0 +1,220 @@ -+/* -+ * drivers/watchdog/mcf_wdt.c -+ * -+ * Watchdog driver for ColdFire processors -+ * -+ * Adapted from the IXP4xx watchdog driver. -+ * The original version carries these notices: -+ * -+ * Author: Deepak Saxena <dsaxena@plexity.net> -+ * -+ * Copyright 2004 (c) MontaVista, Software, Inc. -+ * Based on sa1100 driver, Copyright (C) 2000 Oleg Drokin <green@crimea.edu> -+ * -+ * This file is licensed under the terms of the GNU General Public -+ * License version 2. This program is licensed "as is" without any -+ * warranty of any kind, whether express or implied. -+ */ -+ -+#include <linux/module.h> -+#include <linux/moduleparam.h> -+#include <linux/types.h> -+#include <linux/kernel.h> -+#include <linux/fs.h> -+#include <linux/miscdevice.h> -+#include <linux/watchdog.h> -+#include <linux/init.h> -+#include <linux/bitops.h> -+ -+#include <asm-m68k/uaccess.h> -+#include <asm-m68k/coldfire.h> -+#include <asm-m68k/m5485gpt.h> -+ -+static int nowayout; -+static unsigned int heartbeat = 30; /* (secs) Default is 0.5 minute */ -+static unsigned long wdt_status; -+ -+#define WDT_IN_USE 0 -+#define WDT_OK_TO_CLOSE 1 -+ -+static unsigned long wdt_tick_rate; -+ -+static void -+wdt_enable(void) -+{ -+ MCF_GPT_GMS0 = 0; -+ MCF_GPT_GCIR0 = MCF_GPT_GCIR_PRE(heartbeat*wdt_tick_rate) | -+ MCF_GPT_GCIR_CNT(0xffff); -+ MCF_GPT_GMS0 = MCF_GPT_GMS_OCPW(0xA5) | MCF_GPT_GMS_WDEN | -+ MCF_GPT_GMS_CE | MCF_GPT_GMS_TMS_GPIO; -+} -+ -+static void -+wdt_disable(void) -+{ -+ MCF_GPT_GMS0 = 0; -+} -+ -+static void -+wdt_keepalive(void) -+{ -+ MCF_GPT_GMS0 = MCF_GPT_GMS_OCPW(0xA5) | MCF_GPT_GMS0; -+} -+ -+static int -+mcf_wdt_open(struct inode *inode, struct file *file) -+{ -+ if (test_and_set_bit(WDT_IN_USE, &wdt_status)) -+ return -EBUSY; -+ -+ clear_bit(WDT_OK_TO_CLOSE, &wdt_status); -+ -+ wdt_enable(); -+ -+ return nonseekable_open(inode, file); -+} -+ -+static ssize_t -+mcf_wdt_write(struct file *file, const char *data, size_t len, loff_t *ppos) -+{ -+ if (len) { -+ if (!nowayout) { -+ size_t i; -+ -+ clear_bit(WDT_OK_TO_CLOSE, &wdt_status); -+ -+ for (i = 0; i != len; i++) { -+ char c; -+ -+ if (get_user(c, data + i)) -+ return -EFAULT; -+ if (c == 'V') -+ set_bit(WDT_OK_TO_CLOSE, &wdt_status); -+ } -+ } -+ wdt_keepalive(); -+ } -+ -+ return len; -+} -+ -+ -+static struct watchdog_info ident = { -+ .options = WDIOF_MAGICCLOSE | WDIOF_SETTIMEOUT | -+ WDIOF_KEEPALIVEPING, -+ .identity = "Coldfire Watchdog", -+}; -+ -+static int -+mcf_wdt_ioctl(struct inode *inode, struct file *file, unsigned int cmd, -+ unsigned long arg) -+{ -+ int ret = -ENOIOCTLCMD; -+ int time; -+ -+ switch (cmd) { -+ case WDIOC_GETSUPPORT: -+ ret = copy_to_user((struct watchdog_info *)arg, &ident, -+ sizeof(ident)) ? -EFAULT : 0; -+ break; -+ -+ case WDIOC_GETSTATUS: -+ ret = put_user(0, (int *)arg); -+ break; -+ -+ case WDIOC_GETBOOTSTATUS: -+ ret = put_user(0, (int *)arg); -+ break; -+ -+ case WDIOC_SETTIMEOUT: -+ ret = get_user(time, (int *)arg); -+ if (ret) -+ break; -+ -+ if (time <= 0 || time > 30) { -+ ret = -EINVAL; -+ break; -+ } -+ -+ heartbeat = time; -+ wdt_enable(); -+ /* Fall through */ -+ -+ case WDIOC_GETTIMEOUT: -+ ret = put_user(heartbeat, (int *)arg); -+ break; -+ -+ case WDIOC_KEEPALIVE: -+ wdt_keepalive(); -+ ret = 0; -+ break; -+ } -+ -+ return ret; -+} -+ -+static int -+mcf_wdt_release(struct inode *inode, struct file *file) -+{ -+ if (test_bit(WDT_OK_TO_CLOSE, &wdt_status)) { -+ wdt_disable(); -+ } else { -+ printk(KERN_CRIT "WATCHDOG: Device closed unexpectdly - " -+ "timer will not stop\n"); -+ } -+ -+ clear_bit(WDT_IN_USE, &wdt_status); -+ clear_bit(WDT_OK_TO_CLOSE, &wdt_status); -+ -+ return 0; -+} -+ -+ -+static struct file_operations mcf_wdt_fops = { -+ .owner = THIS_MODULE, -+ .llseek = no_llseek, -+ .write = mcf_wdt_write, -+ .ioctl = mcf_wdt_ioctl, -+ .open = mcf_wdt_open, -+ .release = mcf_wdt_release, -+}; -+ -+static struct miscdevice mcf_wdt_miscdev = { -+ .minor = WATCHDOG_MINOR, -+ .name = "watchdog", -+ .fops = &mcf_wdt_fops, -+}; -+ -+static int __init mcf_wdt_init(void) -+{ -+ wdt_tick_rate = MCF_BUSCLK/0xffff; -+#ifdef CONFIG_WATCHDOG_NOWAYOUT -+ nowayout = 1; -+#else -+ nowayout = 0; -+#endif -+ printk("ColdFire watchdog driver is loaded.\n"); -+ -+ return misc_register(&mcf_wdt_miscdev); -+} -+ -+static void __exit mcf_wdt_exit(void) -+{ -+ misc_deregister(&mcf_wdt_miscdev); -+} -+ -+module_init(mcf_wdt_init); -+module_exit(mcf_wdt_exit); -+ -+MODULE_AUTHOR("Deepak Saxena"); -+MODULE_DESCRIPTION("ColdFire Watchdog"); -+ -+module_param(heartbeat, int, 0); -+MODULE_PARM_DESC(heartbeat, "Watchdog heartbeat in seconds (default 60s)"); -+ -+module_param(nowayout, int, 0); -+MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started"); -+ -+MODULE_LICENSE("GPL"); -+MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR); -+ |