diff options
| -rw-r--r-- | Documentation/ABI/testing/sysfs-class-watchdog | 7 | ||||
| -rw-r--r-- | drivers/watchdog/watchdog_dev.c | 10 |
2 files changed, 17 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-class-watchdog b/Documentation/ABI/testing/sysfs-class-watchdog index 585caecda3a5..27c000238fe4 100644 --- a/Documentation/ABI/testing/sysfs-class-watchdog +++ b/Documentation/ABI/testing/sysfs-class-watchdog @@ -6,6 +6,13 @@ Description: device at boot. It is equivalent to WDIOC_GETBOOTSTATUS of ioctl interface. +What: /sys/class/watchdog/watchdogn/fw_version +Date: April 2023 +Contact: Thomas Weißschuh +Description: + It is a read only file. It contains firmware version of + watchdog device. + What: /sys/class/watchdog/watchdogn/identity Date: August 2015 Contact: Wim Van Sebroeck <wim@iguana.be> diff --git a/drivers/watchdog/watchdog_dev.c b/drivers/watchdog/watchdog_dev.c index 455a9a572d7b..bd5612fa2190 100644 --- a/drivers/watchdog/watchdog_dev.c +++ b/drivers/watchdog/watchdog_dev.c @@ -547,6 +547,15 @@ static ssize_t pretimeout_show(struct device *dev, } static DEVICE_ATTR_RO(pretimeout); +static ssize_t fw_version_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct watchdog_device *wdd = dev_get_drvdata(dev); + + return sysfs_emit(buf, "%d\n", wdd->info->firmware_version); +} +static DEVICE_ATTR_RO(fw_version); + static ssize_t identity_show(struct device *dev, struct device_attribute *attr, char *buf) { @@ -618,6 +627,7 @@ static umode_t wdt_is_visible(struct kobject *kobj, struct attribute *attr, } static struct attribute *wdt_attrs[] = { &dev_attr_state.attr, + &dev_attr_fw_version.attr, &dev_attr_identity.attr, &dev_attr_timeout.attr, &dev_attr_min_timeout.attr, |