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-rw-r--r--target/linux/ifxmips/files/drivers/char/watchdog/ifxmips_wdt.c325
1 files changed, 0 insertions, 325 deletions
diff --git a/target/linux/ifxmips/files/drivers/char/watchdog/ifxmips_wdt.c b/target/linux/ifxmips/files/drivers/char/watchdog/ifxmips_wdt.c
deleted file mode 100644
index d631f4aac..000000000
--- a/target/linux/ifxmips/files/drivers/char/watchdog/ifxmips_wdt.c
+++ /dev/null
@@ -1,325 +0,0 @@
-/*
- * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
- *
- * Copyright (C) 2006 infineon
- * Copyright (C) 2007 John Crispin <blogic@openwrt.org>
- *
- */
-
-#include <asm/uaccess.h>
-#include <linux/errno.h>
-#include <linux/proc_fs.h>
-#include <linux/ioctl.h>
-#include <linux/module.h>
-#include <linux/platform_device.h>
-#include <linux/watchdog.h>
-#include <linux/miscdevice.h>
-#include <asm-mips/ifxmips/ifxmips_wdt.h>
-#include <asm-mips/ifxmips/ifxmips.h>
-
-#define DRVNAME "ifxmips_wdt"
-
-// TODO remove magic numbers and weirdo macros
-extern unsigned int ifxmips_get_fpi_hz (void);
-
-static int ifxmips_wdt_inuse = 0;
-static int ifxmips_wdt_major = 0;
-
-int
-ifxmips_wdt_enable (unsigned int timeout)
-{
- unsigned int wdt_cr = 0;
- unsigned int wdt_reload = 0;
- unsigned int wdt_clkdiv, wdt_pwl, ffpi;
- int retval = 0;
-
- /* clock divider & prewarning limit */
- wdt_clkdiv = 1 << (7 * IFXMIPS_BIU_WDT_CR_CLKDIV_GET(readl(IFXMIPS_BIU_WDT_CR)));
- wdt_pwl = 0x8000 >> IFXMIPS_BIU_WDT_CR_PWL_GET(readl(IFXMIPS_BIU_WDT_CR));
-
- //TODO
- printk("WARNING FUNCTION CALL MISSING!!!");
- //ffpi = cgu_get_io_region_clock();
- printk("cpu clock = %d\n", ffpi);
-
- /* caculate reload value */
- wdt_reload = (timeout * (ffpi / wdt_clkdiv)) + wdt_pwl;
-
- printk(KERN_WARNING DRVNAME ": wdt_pwl=0x%x, wdt_clkdiv=%d, ffpi=%d, wdt_reload = 0x%x\n",
- wdt_pwl, wdt_clkdiv, ffpi, wdt_reload);
-
- if (wdt_reload > 0xFFFF)
- {
- printk(KERN_WARNING DRVNAME ": timeout too large %d\n", timeout);
- retval = -EINVAL;
- goto out;
- }
-
- /* Write first part of password access */
- writel(IFXMIPS_BIU_WDT_CR_PW_SET(IFXMIPS_WDT_PW1), IFXMIPS_BIU_WDT_CR);
-
- wdt_cr = readl(IFXMIPS_BIU_WDT_CR);
- wdt_cr &= (!IFXMIPS_BIU_WDT_CR_PW_SET(0xff) &
- !IFXMIPS_BIU_WDT_CR_PWL_SET(0x3) &
- !IFXMIPS_BIU_WDT_CR_CLKDIV_SET(0x3) &
- !IFXMIPS_BIU_WDT_CR_RELOAD_SET(0xffff));
-
- wdt_cr |= (IFXMIPS_BIU_WDT_CR_PW_SET(IFXMIPS_WDT_PW2) |
- IFXMIPS_BIU_WDT_CR_PWL_SET(IFXMIPS_BIU_WDT_CR_PWL_GET(readl(IFXMIPS_BIU_WDT_CR))) |
- IFXMIPS_BIU_WDT_CR_CLKDIV_SET(IFXMIPS_BIU_WDT_CR_CLKDIV_GET(readl(IFXMIPS_BIU_WDT_CR))) |
- IFXMIPS_BIU_WDT_CR_RELOAD_SET(wdt_reload) |
- IFXMIPS_BIU_WDT_CR_GEN);
-
- writel(wdt_cr, IFXMIPS_BIU_WDT_CR);
-
- printk("watchdog enabled\n");
-
-out:
- return retval;
-}
-
-void
-ifxmips_wdt_disable (void)
-{
- writel(IFXMIPS_BIU_WDT_CR_PW_SET(IFXMIPS_WDT_PW1), IFXMIPS_BIU_WDT_CR);
- writel(IFXMIPS_BIU_WDT_CR_PW_SET(IFXMIPS_WDT_PW2), IFXMIPS_BIU_WDT_CR);
-
- printk("watchdog disabled\n");
-}
-
-/* passed LPEN or DSEN */
-void
-ifxmips_wdt_enable_feature (int en, int type)
-{
- unsigned int wdt_cr = 0;
-
- writel(IFXMIPS_BIU_WDT_CR_PW_SET(IFXMIPS_WDT_PW1), IFXMIPS_BIU_WDT_CR);
-
- wdt_cr = readl(IFXMIPS_BIU_WDT_CR);
-
- if (en)
- {
- wdt_cr &= (~IFXMIPS_BIU_WDT_CR_PW_SET(0xff));
- wdt_cr |= (IFXMIPS_BIU_WDT_CR_PW_SET(IFXMIPS_WDT_PW2) | type);
- } else {
- wdt_cr &= (~IFXMIPS_BIU_WDT_CR_PW_SET(0xff) & ~type);
- wdt_cr |= IFXMIPS_BIU_WDT_CR_PW_SET(IFXMIPS_WDT_PW2);
- }
-
- writel(wdt_cr, IFXMIPS_BIU_WDT_CR);
-}
-
-void
-ifxmips_wdt_prewarning_limit (int pwl)
-{
- unsigned int wdt_cr = 0;
-
- wdt_cr = readl(IFXMIPS_BIU_WDT_CR);
- writel(IFXMIPS_BIU_WDT_CR_PW_SET(IFXMIPS_WDT_PW1), IFXMIPS_BIU_WDT_CR);
-
- wdt_cr &= 0xf300ffff;
- wdt_cr |= (IFXMIPS_BIU_WDT_CR_PW_SET(IFXMIPS_WDT_PW2) | IFXMIPS_BIU_WDT_CR_PWL_SET(pwl));
-
- /* Set reload value in second password access */
- writel(wdt_cr, IFXMIPS_BIU_WDT_CR);
-}
-
-void
-ifxmips_wdt_set_clkdiv (int clkdiv)
-{
- unsigned int wdt_cr = 0;
-
- wdt_cr = readl(IFXMIPS_BIU_WDT_CR);
- writel(IFXMIPS_BIU_WDT_CR_PW_SET(IFXMIPS_WDT_PW1), IFXMIPS_BIU_WDT_CR);
-
- wdt_cr &= 0xfc00ffff;
- wdt_cr |= (IFXMIPS_BIU_WDT_CR_PW_SET(IFXMIPS_WDT_PW2) | IFXMIPS_BIU_WDT_CR_CLKDIV_SET(clkdiv));
-
- /* Set reload value in second password access */
- writel(wdt_cr, IFXMIPS_BIU_WDT_CR);
-}
-
-static int
-ifxmips_wdt_ioctl (struct inode *inode, struct file *file, unsigned int cmd,
- unsigned long arg)
-{
- int result = 0;
- static int timeout = -1;
- unsigned int user_arg;
-
- if ((cmd != IFXMIPS_WDT_IOC_STOP) && (cmd != IFXMIPS_WDT_IOC_PING) && (cmd != IFXMIPS_WDT_IOC_GET_STATUS))
- {
- if (copy_from_user((void *) &user_arg, (void *) arg, sizeof (int))){
- result = -EINVAL;
- goto out;
- }
- }
-
- switch (cmd)
- {
- case IFXMIPS_WDT_IOC_START:
- if ((result = ifxmips_wdt_enable(user_arg)) < 0)
- timeout = -1;
- else
- timeout = user_arg;
- break;
-
- case IFXMIPS_WDT_IOC_STOP:
- printk(KERN_INFO DRVNAME ": disable watch dog timer\n");
- ifxmips_wdt_disable();
- break;
-
- case IFXMIPS_WDT_IOC_PING:
- if (timeout < 0)
- result = -EIO;
- else
- result = ifxmips_wdt_enable(timeout);
- break;
-
- case IFXMIPS_WDT_IOC_GET_STATUS:
- user_arg = readl(IFXMIPS_BIU_WDT_SR);
- copy_to_user((int*)arg, (int*)&user_arg, sizeof(int));
- break;
-
- case IFXMIPS_WDT_IOC_SET_PWL:
- ifxmips_wdt_prewarning_limit(user_arg);
- break;
-
- case IFXMIPS_WDT_IOC_SET_DSEN:
- ifxmips_wdt_enable_feature(user_arg, IFXMIPS_BIU_WDT_CR_DSEN);
- break;
-
- case IFXMIPS_WDT_IOC_SET_LPEN:
- ifxmips_wdt_enable_feature(user_arg, IFXMIPS_BIU_WDT_CR_LPEN);
- break;
-
- case IFXMIPS_WDT_IOC_SET_CLKDIV:
- ifxmips_wdt_set_clkdiv(user_arg);
- break;
-
- default:
- printk(KERN_WARNING DRVNAME ": unknown watchdog iotcl\n");
- }
-
-out:
- return result;
-}
-
-static int
-ifxmips_wdt_open (struct inode *inode, struct file *file)
-{
- if (ifxmips_wdt_inuse)
- return -EBUSY;
-
- ifxmips_wdt_inuse = 1;
-
- return 0;
-}
-
-static int
-ifxmips_wdt_release (struct inode *inode, struct file *file)
-{
- ifxmips_wdt_inuse = 0;
-
- return 0;
-}
-
-int
-ifxmips_wdt_register_proc_read (char *buf, char **start, off_t offset, int count,
- int *eof, void *data)
-{
- int len = 0;
-
- len += sprintf (buf + len, "IFXMIPS_BIU_WDT_PROC_READ\n");
- len += sprintf (buf + len, "IFXMIPS_BIU_WDT_CR(0x%08x) : 0x%08x\n",
- (unsigned int)IFXMIPS_BIU_WDT_CR, readl(IFXMIPS_BIU_WDT_CR));
- len += sprintf (buf + len, "IFXMIPS_BIU_WDT_SR(0x%08x) : 0x%08x\n",
- (unsigned int)IFXMIPS_BIU_WDT_SR, readl(IFXMIPS_BIU_WDT_SR));
-
- *eof = 1;
-
- return len;
-}
-
-static const struct file_operations ifxmips_wdt_fops = {
- .owner = THIS_MODULE,
- .llseek = no_llseek,
- .ioctl = ifxmips_wdt_ioctl,
- .open = ifxmips_wdt_open,
- .release = ifxmips_wdt_release,
-// .write = at91_wdt_write,
-};
-
-static struct miscdevice ifxmips_wdt_miscdev = {
- .minor = WATCHDOG_MINOR,
- .name = "ifxmips_wdt",
- .fops = &ifxmips_wdt_fops,
-};
-
-
-static int
-ifxmips_wdt_probe (struct platform_device *pdev)
-{
- int ret = misc_register(&ifxmips_wdt_miscdev);
- if (ret)
- return ret;
-
- create_proc_read_entry(DRVNAME, 0, NULL, ifxmips_wdt_register_proc_read, NULL);
-
- printk(KERN_INFO DRVNAME ": ifxmips watchdog loaded\n");
-
- return 0;
-}
-
-static int
-ifxmips_wdt_remove (struct platform_device *pdev)
-{
- misc_deregister(&ifxmips_wdt_miscdev);
- remove_proc_entry(DRVNAME, NULL);
- return 0;
-}
-
-static struct
-platform_driver ifxmips_wdt_driver = {
- .probe = ifxmips_wdt_probe,
- .remove = ifxmips_wdt_remove,
- .driver = {
- .name = DRVNAME,
- .owner = THIS_MODULE,
- },
-};
-
-int __init
-ifxmips_wdt_init_module (void)
-{
- int ret = platform_driver_register(&ifxmips_wdt_driver);
- if (ret)
- printk(KERN_INFO DRVNAME ": Error registering platfom driver!");
- return ret;
-}
-
-void
-ifxmips_wdt_cleanup_module (void)
-{
- platform_driver_unregister(&ifxmips_wdt_driver);
-}
-
-module_init(ifxmips_wdt_init_module);
-module_exit(ifxmips_wdt_cleanup_module);
-
-MODULE_AUTHOR("John Crispin <blogic@openwrt.org>");
-MODULE_DESCRIPTION("Watchdog driver for infineon ifxmips family");
-MODULE_LICENSE("GPL");
-MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR);
generated by cgit v1.2.3 (git 2.25.1) at 2024-10-31 21:58:21 +0000