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-rw-r--r--target/linux/ipq806x/patches-4.4/009-4-watchdog-Read-device-status-through-sysfs-attributes.patch260
1 files changed, 0 insertions, 260 deletions
diff --git a/target/linux/ipq806x/patches-4.4/009-4-watchdog-Read-device-status-through-sysfs-attributes.patch b/target/linux/ipq806x/patches-4.4/009-4-watchdog-Read-device-status-through-sysfs-attributes.patch
deleted file mode 100644
index fd4b38a9fb..0000000000
--- a/target/linux/ipq806x/patches-4.4/009-4-watchdog-Read-device-status-through-sysfs-attributes.patch
+++ /dev/null
@@ -1,260 +0,0 @@
-From 33b711269ade3f6bc9d9d15e4343e6fa922d999b Mon Sep 17 00:00:00 2001
-From: Pratyush Anand <panand@redhat.com>
-Date: Thu, 17 Dec 2015 17:53:59 +0530
-Subject: watchdog: Read device status through sysfs attributes
-
-This patch adds following attributes to watchdog device's sysfs interface
-to read its different status.
-
-* state - reads whether device is active or not
-* identity - reads Watchdog device's identity string.
-* timeout - reads current timeout.
-* timeleft - reads timeleft before watchdog generates a reset
-* bootstatus - reads status of the watchdog device at boot
-* status - reads watchdog device's internal status bits
-* nowayout - reads whether nowayout feature was set or not
-
-Testing with iTCO_wdt:
- # cd /sys/class/watchdog/watchdog1/
- # ls
-bootstatus dev device identity nowayout power state
-subsystem timeleft timeout uevent
- # cat identity
-iTCO_wdt
- # cat timeout
-30
- # cat state
-inactive
- # echo > /dev/watchdog1
- # cat timeleft
-26
- # cat state
-active
- # cat bootstatus
-0
- # cat nowayout
-0
-
-Signed-off-by: Pratyush Anand <panand@redhat.com>
-Reviewed-by: Guenter Roeck <linux@roeck-us.net>
-Signed-off-by: Guenter Roeck <linux@roeck-us.net>
-Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
----
- Documentation/ABI/testing/sysfs-class-watchdog | 51 +++++++++++
- drivers/watchdog/Kconfig | 7 ++
- drivers/watchdog/watchdog_core.c | 2 +-
- drivers/watchdog/watchdog_dev.c | 114 +++++++++++++++++++++++++
- 4 files changed, 173 insertions(+), 1 deletion(-)
- create mode 100644 Documentation/ABI/testing/sysfs-class-watchdog
-
---- /dev/null
-+++ b/Documentation/ABI/testing/sysfs-class-watchdog
-@@ -0,0 +1,51 @@
-+What: /sys/class/watchdog/watchdogn/bootstatus
-+Date: August 2015
-+Contact: Wim Van Sebroeck <wim@iguana.be>
-+Description:
-+ It is a read only file. It contains status of the watchdog
-+ device at boot. It is equivalent to WDIOC_GETBOOTSTATUS of
-+ ioctl interface.
-+
-+What: /sys/class/watchdog/watchdogn/identity
-+Date: August 2015
-+Contact: Wim Van Sebroeck <wim@iguana.be>
-+Description:
-+ It is a read only file. It contains identity string of
-+ watchdog device.
-+
-+What: /sys/class/watchdog/watchdogn/nowayout
-+Date: August 2015
-+Contact: Wim Van Sebroeck <wim@iguana.be>
-+Description:
-+ It is a read only file. While reading, it gives '1' if that
-+ device supports nowayout feature else, it gives '0'.
-+
-+What: /sys/class/watchdog/watchdogn/state
-+Date: August 2015
-+Contact: Wim Van Sebroeck <wim@iguana.be>
-+Description:
-+ It is a read only file. It gives active/inactive status of
-+ watchdog device.
-+
-+What: /sys/class/watchdog/watchdogn/status
-+Date: August 2015
-+Contact: Wim Van Sebroeck <wim@iguana.be>
-+Description:
-+ It is a read only file. It contains watchdog device's
-+ internal status bits. It is equivalent to WDIOC_GETSTATUS
-+ of ioctl interface.
-+
-+What: /sys/class/watchdog/watchdogn/timeleft
-+Date: August 2015
-+Contact: Wim Van Sebroeck <wim@iguana.be>
-+Description:
-+ It is a read only file. It contains value of time left for
-+ reset generation. It is equivalent to WDIOC_GETTIMELEFT of
-+ ioctl interface.
-+
-+What: /sys/class/watchdog/watchdogn/timeout
-+Date: August 2015
-+Contact: Wim Van Sebroeck <wim@iguana.be>
-+Description:
-+ It is a read only file. It is read to know about current
-+ value of timeout programmed.
---- a/drivers/watchdog/Kconfig
-+++ b/drivers/watchdog/Kconfig
-@@ -46,6 +46,13 @@ config WATCHDOG_NOWAYOUT
- get killed. If you say Y here, the watchdog cannot be stopped once
- it has been started.
-
-+config WATCHDOG_SYSFS
-+ bool "Read different watchdog information through sysfs"
-+ default n
-+ help
-+ Say Y here if you want to enable watchdog device status read through
-+ sysfs attributes.
-+
- #
- # General Watchdog drivers
- #
---- a/drivers/watchdog/watchdog_core.c
-+++ b/drivers/watchdog/watchdog_core.c
-@@ -249,7 +249,7 @@ static int __watchdog_register_device(st
-
- devno = wdd->cdev.dev;
- wdd->dev = device_create(watchdog_class, wdd->parent, devno,
-- NULL, "watchdog%d", wdd->id);
-+ wdd, "watchdog%d", wdd->id);
- if (IS_ERR(wdd->dev)) {
- watchdog_dev_unregister(wdd);
- ida_simple_remove(&watchdog_ida, id);
---- a/drivers/watchdog/watchdog_dev.c
-+++ b/drivers/watchdog/watchdog_dev.c
-@@ -247,6 +247,119 @@ out_timeleft:
- return err;
- }
-
-+#ifdef CONFIG_WATCHDOG_SYSFS
-+static ssize_t nowayout_show(struct device *dev, struct device_attribute *attr,
-+ char *buf)
-+{
-+ struct watchdog_device *wdd = dev_get_drvdata(dev);
-+
-+ return sprintf(buf, "%d\n", !!test_bit(WDOG_NO_WAY_OUT, &wdd->status));
-+}
-+static DEVICE_ATTR_RO(nowayout);
-+
-+static ssize_t status_show(struct device *dev, struct device_attribute *attr,
-+ char *buf)
-+{
-+ struct watchdog_device *wdd = dev_get_drvdata(dev);
-+ ssize_t status;
-+ unsigned int val;
-+
-+ status = watchdog_get_status(wdd, &val);
-+ if (!status)
-+ status = sprintf(buf, "%u\n", val);
-+
-+ return status;
-+}
-+static DEVICE_ATTR_RO(status);
-+
-+static ssize_t bootstatus_show(struct device *dev,
-+ struct device_attribute *attr, char *buf)
-+{
-+ struct watchdog_device *wdd = dev_get_drvdata(dev);
-+
-+ return sprintf(buf, "%u\n", wdd->bootstatus);
-+}
-+static DEVICE_ATTR_RO(bootstatus);
-+
-+static ssize_t timeleft_show(struct device *dev, struct device_attribute *attr,
-+ char *buf)
-+{
-+ struct watchdog_device *wdd = dev_get_drvdata(dev);
-+ ssize_t status;
-+ unsigned int val;
-+
-+ status = watchdog_get_timeleft(wdd, &val);
-+ if (!status)
-+ status = sprintf(buf, "%u\n", val);
-+
-+ return status;
-+}
-+static DEVICE_ATTR_RO(timeleft);
-+
-+static ssize_t timeout_show(struct device *dev, struct device_attribute *attr,
-+ char *buf)
-+{
-+ struct watchdog_device *wdd = dev_get_drvdata(dev);
-+
-+ return sprintf(buf, "%u\n", wdd->timeout);
-+}
-+static DEVICE_ATTR_RO(timeout);
-+
-+static ssize_t identity_show(struct device *dev, struct device_attribute *attr,
-+ char *buf)
-+{
-+ struct watchdog_device *wdd = dev_get_drvdata(dev);
-+
-+ return sprintf(buf, "%s\n", wdd->info->identity);
-+}
-+static DEVICE_ATTR_RO(identity);
-+
-+static ssize_t state_show(struct device *dev, struct device_attribute *attr,
-+ char *buf)
-+{
-+ struct watchdog_device *wdd = dev_get_drvdata(dev);
-+
-+ if (watchdog_active(wdd))
-+ return sprintf(buf, "active\n");
-+
-+ return sprintf(buf, "inactive\n");
-+}
-+static DEVICE_ATTR_RO(state);
-+
-+static umode_t wdt_is_visible(struct kobject *kobj, struct attribute *attr,
-+ int n)
-+{
-+ struct device *dev = container_of(kobj, struct device, kobj);
-+ struct watchdog_device *wdd = dev_get_drvdata(dev);
-+ umode_t mode = attr->mode;
-+
-+ if (attr == &dev_attr_status.attr && !wdd->ops->status)
-+ mode = 0;
-+ else if (attr == &dev_attr_timeleft.attr && !wdd->ops->get_timeleft)
-+ mode = 0;
-+
-+ return mode;
-+}
-+static struct attribute *wdt_attrs[] = {
-+ &dev_attr_state.attr,
-+ &dev_attr_identity.attr,
-+ &dev_attr_timeout.attr,
-+ &dev_attr_timeleft.attr,
-+ &dev_attr_bootstatus.attr,
-+ &dev_attr_status.attr,
-+ &dev_attr_nowayout.attr,
-+ NULL,
-+};
-+
-+static const struct attribute_group wdt_group = {
-+ .attrs = wdt_attrs,
-+ .is_visible = wdt_is_visible,
-+};
-+__ATTRIBUTE_GROUPS(wdt);
-+#else
-+#define wdt_groups NULL
-+#endif
-+
- /*
- * watchdog_ioctl_op: call the watchdog drivers ioctl op if defined
- * @wdd: the watchdog device to do the ioctl on
-@@ -584,6 +697,7 @@ int watchdog_dev_unregister(struct watch
- static struct class watchdog_class = {
- .name = "watchdog",
- .owner = THIS_MODULE,
-+ .dev_groups = wdt_groups,
- };
-
- /*
generated by cgit v1.2.3 (git 2.25.1) at 2025-01-13 09:14:16 +0000