leds: trigger: netdev: expose hw_control status via sysfs

Expose hw_control status via sysfs for the netdev trigger to give
userspace better understanding of the current state of the trigger and
the LED.

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
Acked-by: Lee Jones <lee@kernel.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/drivers/leds/trigger/ledtrig-netdev.c b/drivers/leds/trigger/ledtrig-netdev.c
index 2c1c9e95860eca189d6a59cad582f26208983737..32b66703068a516e862f81746889b7c55bb53d2f 100644 (file)
--- a/drivers/leds/trigger/ledtrig-netdev.c
+++ b/drivers/leds/trigger/ledtrig-netdev.c
@@ -406,6 +406,16 @@ static ssize_t interval_store(struct device *dev,
 
 static DEVICE_ATTR_RW(interval);
 
+static ssize_t hw_control_show(struct device *dev,
+                              struct device_attribute *attr, char *buf)
+{
+       struct led_netdev_data *trigger_data = led_trigger_get_drvdata(dev);
+
+       return sprintf(buf, "%d\n", trigger_data->hw_control);
+}
+
+static DEVICE_ATTR_RO(hw_control);
+
 static struct attribute *netdev_trig_attrs[] = {
        &dev_attr_device_name.attr,
        &dev_attr_link.attr,
@@ -417,6 +427,7 @@ static struct attribute *netdev_trig_attrs[] = {
        &dev_attr_rx.attr,
        &dev_attr_tx.attr,
        &dev_attr_interval.attr,
+       &dev_attr_hw_control.attr,
        NULL
 };
 ATTRIBUTE_GROUPS(netdev_trig);