From c22b79c4eb93d5b368995ca8b1c151ab9fcccd68 Mon Sep 17 00:00:00 2001 From: Florian Fainelli Date: Wed, 28 Apr 2010 09:54:16 +0000 Subject: [rdc] use upstream MFD, GPIO patch, put everything in patches. git-svn-id: svn://svn.openwrt.org/openwrt/trunk@21219 3c298f89-4303-0410-b956-a3cf2f4a3e73 --- .../files-2.6.30/drivers/watchdog/rdc321x_wdt.c | 286 --------------------- 1 file changed, 286 deletions(-) delete mode 100644 target/linux/rdc/files-2.6.30/drivers/watchdog/rdc321x_wdt.c (limited to 'target/linux/rdc/files-2.6.30/drivers/watchdog/rdc321x_wdt.c') diff --git a/target/linux/rdc/files-2.6.30/drivers/watchdog/rdc321x_wdt.c b/target/linux/rdc/files-2.6.30/drivers/watchdog/rdc321x_wdt.c deleted file mode 100644 index 6949179495..0000000000 --- a/target/linux/rdc/files-2.6.30/drivers/watchdog/rdc321x_wdt.c +++ /dev/null @@ -1,286 +0,0 @@ -/* - * RDC321x watchdog driver - * - * Copyright (C) 2007-2010 Florian Fainelli - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - * - */ - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include - -extern int rdc321x_pci_write(int reg, u32 val); -extern int rdc321x_pci_read(int reg, u32 *val); - -#define RDC321X_WDT_REG 0x00000044 - -#define RDC_WDT_EN 0x00800000 /* Enable bit */ -#define RDC_WDT_WDTIRQ 0x00400000 /* Create WDT IRQ before CPU reset */ -#define RDC_WDT_NMIIRQ 0x00200000 /* Create NMI IRQ before CPU reset */ -#define RDC_WDT_RST 0x00100000 /* Reset wdt */ -#define RDC_WDT_NIF 0x00080000 /* NMI interrupt occured */ -#define RDC_WDT_WIF 0x00040000 /* WDT interrupt occured */ -#define RDC_WDT_IRT 0x00000700 /* IRQ Routing table */ -#define RDC_WDT_CNT 0x0000007F /* WDT count */ - -/* default counter value (2.34 s) */ -#define RDC_WDT_DFLT_CNT 0x00000040 - -#define RDC_WDT_SETUP (RDC_WDT_EN | RDC_WDT_NMIIRQ | RDC_WDT_RST | RDC_WDT_DFLT_CNT) - -/* some device data */ -static struct { - struct timer_list timer; - int seconds_left; - int total_seconds; - bool inuse; - bool running; - bool close_expected; -} rdc321x_wdt_dev; - -static struct watchdog_info ident = { - .options = WDIOF_SETTIMEOUT | WDIOF_MAGICCLOSE, - .identity = "RDC321x WDT", -}; - -/* generic helper functions */ -static void rdc321x_wdt_timer(unsigned long unused) -{ - if (!rdc321x_wdt_dev.running) { - rdc321x_pci_write(RDC321X_WDT_REG, 0); - return; - } - - rdc321x_wdt_dev.seconds_left--; - - if (rdc321x_wdt_dev.seconds_left < 1) - return; - - rdc321x_pci_write(RDC321X_WDT_REG, RDC_WDT_SETUP); - - mod_timer(&rdc321x_wdt_dev.timer, HZ * 2 + jiffies); -} - -static void rdc321x_wdt_reset(void) -{ - rdc321x_wdt_dev.seconds_left = rdc321x_wdt_dev.total_seconds; -} - -static void rdc321x_wdt_start(void) -{ - if (rdc321x_wdt_dev.running) - return; - - rdc321x_wdt_dev.seconds_left = rdc321x_wdt_dev.total_seconds; - - rdc321x_wdt_dev.running = true; - - rdc321x_wdt_timer(0); - - return; -} - -static int rdc321x_wdt_stop(void) -{ - if (WATCHDOG_NOWAYOUT) - return -ENOSYS; - - rdc321x_wdt_dev.running = false; - - return 0; -} - -/* filesystem operations */ -static int rdc321x_wdt_open(struct inode *inode, struct file *file) -{ - if (xchg(&rdc321x_wdt_dev.inuse, true)) - return -EBUSY; - - return nonseekable_open(inode, file); -} - -static int rdc321x_wdt_release(struct inode *inode, struct file *file) -{ - int res; - if (rdc321x_wdt_dev.close_expected) { - res = rdc321x_wdt_stop(); - if (res) - return res; - } - - rdc321x_wdt_dev.inuse = false; - - return 0; -} - -static long rdc321x_wdt_ioctl(struct file *file, unsigned int cmd, - unsigned long arg) -{ - void __user *argp = (void __user *)arg; - int value; - - switch (cmd) { - case WDIOC_KEEPALIVE: - rdc321x_wdt_reset(); - break; - case WDIOC_GETSUPPORT: - if (copy_to_user(argp, &ident, sizeof(ident))) - return -EFAULT; - break; - case WDIOC_SETTIMEOUT: - if (copy_from_user(&rdc321x_wdt_dev.total_seconds, argp, sizeof(int))) - return -EFAULT; - rdc321x_wdt_dev.seconds_left = rdc321x_wdt_dev.total_seconds; - break; - case WDIOC_GETTIMEOUT: - if (copy_to_user(argp, &rdc321x_wdt_dev.total_seconds, sizeof(int))) - return -EFAULT; - break; - case WDIOC_GETTIMELEFT: - if (copy_to_user(argp, &rdc321x_wdt_dev.seconds_left, sizeof(int))) - return -EFAULT; - break; - case WDIOC_SETOPTIONS: - if (copy_from_user(&value, argp, sizeof(int))) - return -EFAULT; - switch (value) { - case WDIOS_ENABLECARD: - rdc321x_wdt_start(); - break; - case WDIOS_DISABLECARD: - return rdc321x_wdt_stop(); - default: - return -EINVAL; - } - break; - default: - return -EINVAL; - } - return 0; -} - -static ssize_t rdc321x_wdt_write(struct file *file, const char __user *buf, - size_t count, loff_t *ppos) -{ - size_t i; - - if (!count) - return -EIO; - - rdc321x_wdt_dev.close_expected = false; - - for (i = 0; i != count; i++) { - char c; - - if (get_user(c, buf + i)) - return -EFAULT; - - if (c == 'V') { - rdc321x_wdt_dev.close_expected = true; - break; - } - } - - rdc321x_wdt_reset(); - - return count; -} - -static const struct file_operations rdc321x_wdt_fops = { - .llseek = no_llseek, - .unlocked_ioctl = rdc321x_wdt_ioctl, - .open = rdc321x_wdt_open, - .write = rdc321x_wdt_write, - .release = rdc321x_wdt_release, -}; - -static struct miscdevice rdc321x_wdt_misc = { - .minor = WATCHDOG_MINOR, - .name = "watchdog", - .fops = &rdc321x_wdt_fops, -}; - -static int __init rdc321x_wdt_probe(struct platform_device *pdev) -{ - int err; - - err = rdc321x_pci_write(RDC321X_WDT_REG, 0); - if (err) - return err; - - rdc321x_wdt_dev.running = false; - rdc321x_wdt_dev.close_expected = false; - rdc321x_wdt_dev.inuse = 0; - setup_timer(&rdc321x_wdt_dev.timer, rdc321x_wdt_timer, 0); - rdc321x_wdt_dev.total_seconds = 100; - - err = misc_register(&rdc321x_wdt_misc); - if (err < 0) { - printk(KERN_ERR PFX "watchdog: misc_register failed\n"); - return err; - } - - dev_info(&pdev->dev, "watchdog init success\n"); - - return 0; -} - -static int __devexit rdc321x_wdt_remove(struct platform_device *pdev) -{ - if (rdc321x_wdt_dev.inuse) - rdc321x_wdt_dev.inuse = 0; - - while (timer_pending(&rdc321x_wdt_dev.timer)) - msleep(100); - - misc_deregister(&rdc321x_wdt_misc); - return 0; -} - -static struct platform_driver rdc321x_wdt_driver = { - .driver.name = "rdc321x-wdt", - .driver.owner = THIS_MODULE, - .probe = rdc321x_wdt_probe, - .remove = __devexit_p(rdc321x_wdt_remove), -}; - -static int __init rdc321x_wdt_init(void) -{ - return platform_driver_register(&rdc321x_wdt_driver); -} - -static void __exit rdc321x_wdt_exit(void) -{ - platform_driver_unregister(&rdc321x_wdt_driver); -} - -module_init(rdc321x_wdt_init); -module_exit(rdc321x_wdt_exit); - -MODULE_AUTHOR("Florian Fainelli "); -MODULE_DESCRIPTION("RDC321x Watchdog driver"); -MODULE_LICENSE("GPL"); -MODULE_ALIAS("platform:rdc321x-wdt"); -- cgit v1.2.3