watchdog: remove ixp2000 driver

The platform is removed, so there are no users of this driver.

Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>

3 files changed, 0 insertions, 227 deletions

diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig
index eeea76f4dccb..8c37d853aec2 100644
--- a/drivers/watchdog/Kconfig
+++ b/drivers/watchdog/Kconfig
@@ -129,17 +129,6 @@ config 977_WATCHDOG
 
           Not sure? It's safe to say N.
 
-config IXP2000_WATCHDOG
-        tristate "IXP2000 Watchdog"
-        depends on ARCH_IXP2000
-        help
-          Say Y here if to include support for the watchdog timer
-          in the Intel IXP2000(2400, 2800, 2850) network processors.
-          This driver can be built as a module by choosing M. The module
-          will be called ixp2000_wdt.
-
-          Say N if you are unsure.
-
 config IXP4XX_WATCHDOG
         tristate "IXP4xx Watchdog"
         depends on ARCH_IXP4XX
diff --git a/drivers/watchdog/Makefile b/drivers/watchdog/Makefile
index e8f479a16402..34b4cebee939 100644
--- a/drivers/watchdog/Makefile
+++ b/drivers/watchdog/Makefile
@@ -36,7 +36,6 @@ obj-$(CONFIG_OMAP_WATCHDOG) += omap_wdt.o
 obj-$(CONFIG_TWL4030_WATCHDOG) += twl4030_wdt.o
 obj-$(CONFIG_21285_WATCHDOG) += wdt285.o
 obj-$(CONFIG_977_WATCHDOG) += wdt977.o
-obj-$(CONFIG_IXP2000_WATCHDOG) += ixp2000_wdt.o
 obj-$(CONFIG_IXP4XX_WATCHDOG) += ixp4xx_wdt.o
 obj-$(CONFIG_KS8695_WATCHDOG) += ks8695_wdt.o
 obj-$(CONFIG_S3C2410_WATCHDOG) += s3c2410_wdt.o
diff --git a/drivers/watchdog/ixp2000_wdt.c b/drivers/watchdog/ixp2000_wdt.c
deleted file mode 100644
index 3f047a58d3ae..000000000000
--- a/drivers/watchdog/ixp2000_wdt.c
+++ /dev/null
@@ -1,215 +0,0 @@
-/*
- * drivers/char/watchdog/ixp2000_wdt.c
- *
- * Watchdog driver for Intel IXP2000 network processors
- *
- * Adapted from the IXP4xx watchdog driver by Lennert Buytenhek.
- * 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.
- */
-
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-
-#include <linux/module.h>
-#include <linux/moduleparam.h>
-#include <linux/types.h>
-#include <linux/timer.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 <linux/uaccess.h>
-#include <mach/hardware.h>
-
-static bool nowayout = WATCHDOG_NOWAYOUT;
-static unsigned int heartbeat = 60;     /* (secs) Default is 1 minute */
-static unsigned long wdt_status;
-static DEFINE_SPINLOCK(wdt_lock);
-
-#define WDT_IN_USE              0
-#define WDT_OK_TO_CLOSE         1
-
-static unsigned long wdt_tick_rate;
-
-static void wdt_enable(void)
-{
-        spin_lock(&wdt_lock);
-        ixp2000_reg_write(IXP2000_RESET0, *(IXP2000_RESET0) | WDT_RESET_ENABLE);
-        ixp2000_reg_write(IXP2000_TWDE, WDT_ENABLE);
-        ixp2000_reg_write(IXP2000_T4_CLD, heartbeat * wdt_tick_rate);
-        ixp2000_reg_write(IXP2000_T4_CTL, TIMER_DIVIDER_256 | TIMER_ENABLE);
-        spin_unlock(&wdt_lock);
-}
-
-static void wdt_disable(void)
-{
-        spin_lock(&wdt_lock);
-        ixp2000_reg_write(IXP2000_T4_CTL, 0);
-        spin_unlock(&wdt_lock);
-}
-
-static void wdt_keepalive(void)
-{
-        spin_lock(&wdt_lock);
-        ixp2000_reg_write(IXP2000_T4_CLD, heartbeat * wdt_tick_rate);
-        spin_unlock(&wdt_lock);
-}
-
-static int ixp2000_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 ixp2000_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 const struct watchdog_info ident = {
-        .options        = WDIOF_MAGICCLOSE | WDIOF_SETTIMEOUT |
-                                WDIOF_KEEPALIVEPING,
-        .identity       = "IXP2000 Watchdog",
-};
-
-static long ixp2000_wdt_ioctl(struct file *file, unsigned int cmd,
-                                                        unsigned long arg)
-{
-        int ret = -ENOTTY;
-        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_KEEPALIVE:
-                wdt_enable();
-                ret = 0;
-                break;
-
-        case WDIOC_SETTIMEOUT:
-                ret = get_user(time, (int *)arg);
-                if (ret)
-                        break;
-
-                if (time <= 0 || time > 60) {
-                        ret = -EINVAL;
-                        break;
-                }
-
-                heartbeat = time;
-                wdt_keepalive();
-                /* Fall through */
-
-        case WDIOC_GETTIMEOUT:
-                ret = put_user(heartbeat, (int *)arg);
-                break;
-        }
-
-        return ret;
-}
-
-static int ixp2000_wdt_release(struct inode *inode, struct file *file)
-{
-        if (test_bit(WDT_OK_TO_CLOSE, &wdt_status))
-                wdt_disable();
-        else
-                pr_crit("Device closed unexpectedly - timer will not stop\n");
-        clear_bit(WDT_IN_USE, &wdt_status);
-        clear_bit(WDT_OK_TO_CLOSE, &wdt_status);
-
-        return 0;
-}
-
-
-static const struct file_operations ixp2000_wdt_fops = {
-        .owner          = THIS_MODULE,
-        .llseek         = no_llseek,
-        .write          = ixp2000_wdt_write,
-        .unlocked_ioctl = ixp2000_wdt_ioctl,
-        .open           = ixp2000_wdt_open,
-        .release        = ixp2000_wdt_release,
-};
-
-static struct miscdevice ixp2000_wdt_miscdev = {
-        .minor          = WATCHDOG_MINOR,
-        .name           = "watchdog",
-        .fops           = &ixp2000_wdt_fops,
-};
-
-static int __init ixp2000_wdt_init(void)
-{
-        if ((*IXP2000_PRODUCT_ID & 0x001ffef0) == 0x00000000) {
-                pr_info("Unable to use IXP2000 watchdog due to IXP2800 erratum #25\n");
-                return -EIO;
-        }
-        wdt_tick_rate = (*IXP2000_T1_CLD * HZ) / 256;
-        return misc_register(&ixp2000_wdt_miscdev);
-}
-
-static void __exit ixp2000_wdt_exit(void)
-{
-        misc_deregister(&ixp2000_wdt_miscdev);
-}
-
-module_init(ixp2000_wdt_init);
-module_exit(ixp2000_wdt_exit);
-
-MODULE_AUTHOR("Deepak Saxena <dsaxena@plexity.net>");
-MODULE_DESCRIPTION("IXP2000 Network Processor Watchdog");
-
-module_param(heartbeat, int, 0);
-MODULE_PARM_DESC(heartbeat, "Watchdog heartbeat in seconds (default 60s)");
-
-module_param(nowayout, bool, 0);
-MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started");
-
-MODULE_LICENSE("GPL");
-MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR);
-