diff options
Diffstat (limited to 'target/linux/danube/files/drivers/char')
| -rw-r--r-- | target/linux/danube/files/drivers/char/watchdog/danube_wdt.c | 44 |
1 files changed, 17 insertions, 27 deletions
diff --git a/target/linux/danube/files/drivers/char/watchdog/danube_wdt.c b/target/linux/danube/files/drivers/char/watchdog/danube_wdt.c index cf01a9d79..be2b33938 100644 --- a/target/linux/danube/files/drivers/char/watchdog/danube_wdt.c +++ b/target/linux/danube/files/drivers/char/watchdog/danube_wdt.c @@ -18,28 +18,17 @@ * */ -#include <linux/module.h> -#include <linux/init.h> -#include <linux/sched.h> -#include <linux/kernel.h> -#include <linux/slab.h> -#include <linux/string.h> -#include <linux/timer.h> -#include <linux/fs.h> +#include <asm/uaccess.h> #include <linux/errno.h> #include <linux/proc_fs.h> -#include <linux/stat.h> -#include <linux/tty.h> -#include <linux/selection.h> -#include <linux/kmod.h> -#include <linux/vmalloc.h> -#include <linux/kdev_t.h> #include <linux/ioctl.h> -#include <asm/uaccess.h> -#include <asm/system.h> +#include <linux/module.h> #include <asm-mips/danube/danube_wdt.h> #include <asm-mips/danube/danube.h> + +// TODO remove magic numbers and weirdo macros + extern unsigned int danube_get_fpi_hz (void); static int danube_wdt_inuse = 0; @@ -90,8 +79,8 @@ danube_wdt_enable (unsigned int timeout) DANUBE_BIU_WDT_CR_RELOAD_SET(wdt_reload) | DANUBE_BIU_WDT_CR_GEN); - /* Set reload value in second password access */ writel(wdt_cr, DANUBE_BIU_WDT_CR); + printk("watchdog enabled\n"); out: @@ -101,11 +90,10 @@ out: void danube_wdt_disable (void) { - /* Write first part of password access */ writel(DANUBE_BIU_WDT_CR_PW_SET(DANUBE_WDT_PW1), DANUBE_BIU_WDT_CR); - - /* Disable the watchdog in second password access (GEN=0) */ writel(DANUBE_BIU_WDT_CR_PW_SET(DANUBE_WDT_PW2), DANUBE_BIU_WDT_CR); + + printk("watchdog disabled\n"); } /* passed LPEN or DSEN */ @@ -127,7 +115,6 @@ danube_wdt_enable_feature (int en, int type) wdt_cr |= DANUBE_BIU_WDT_CR_PW_SET(DANUBE_WDT_PW2); } - /* Set reload value in second password access */ writel(wdt_cr, DANUBE_BIU_WDT_CR); } @@ -140,8 +127,7 @@ danube_wdt_prewarning_limit (int pwl) writel(DANUBE_BIU_WDT_CR_PW_SET(DANUBE_WDT_PW1), DANUBE_BIU_WDT_CR); wdt_cr &= 0xf300ffff; - wdt_cr |= (DANUBE_BIU_WDT_CR_PW_SET(DANUBE_WDT_PW2) | - DANUBE_BIU_WDT_CR_PWL_SET(pwl)); + wdt_cr |= (DANUBE_BIU_WDT_CR_PW_SET(DANUBE_WDT_PW2) | DANUBE_BIU_WDT_CR_PWL_SET(pwl)); /* Set reload value in second password access */ writel(wdt_cr, DANUBE_BIU_WDT_CR); @@ -156,8 +142,7 @@ danube_wdt_set_clkdiv (int clkdiv) writel(DANUBE_BIU_WDT_CR_PW_SET(DANUBE_WDT_PW1), DANUBE_BIU_WDT_CR); wdt_cr &= 0xfc00ffff; - wdt_cr |= (DANUBE_BIU_WDT_CR_PW_SET(DANUBE_WDT_PW2) | - DANUBE_BIU_WDT_CR_CLKDIV_SET(clkdiv)); + wdt_cr |= (DANUBE_BIU_WDT_CR_PW_SET(DANUBE_WDT_PW2) | DANUBE_BIU_WDT_CR_CLKDIV_SET(clkdiv)); /* Set reload value in second password access */ writel(wdt_cr, DANUBE_BIU_WDT_CR); @@ -173,14 +158,15 @@ danube_wdt_ioctl (struct inode *inode, struct file *file, unsigned int cmd, if ((cmd != DANUBE_WDT_IOC_STOP) && (cmd != DANUBE_WDT_IOC_PING) && (cmd != DANUBE_WDT_IOC_GET_STATUS)) { - if (copy_from_user((void *) &user_arg, (void *) arg, sizeof (int))) + if (copy_from_user((void *) &user_arg, (void *) arg, sizeof (int))){ result = -EINVAL; + goto out; + } } switch (cmd) { case DANUBE_WDT_IOC_START: - printk("enable watch dog timer!\n"); if ((result = danube_wdt_enable(user_arg)) < 0) timeout = -1; else @@ -219,8 +205,12 @@ danube_wdt_ioctl (struct inode *inode, struct file *file, unsigned int cmd, case DANUBE_WDT_IOC_SET_CLKDIV: danube_wdt_set_clkdiv(user_arg); break; + + default: + printk("unknown watchdog iotcl\n"); } +out: return result; } |