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Date: Wed, 21 Jun 2023 11:26:53 +0200
From: Christian Marangi <ansuelsmth@...il.com>
To: Andrew Lunn <andrew@...n.ch>, Lee Jones <lee@...nel.org>,
linux-leds@...r.kernel.org, netdev@...r.kernel.org,
linux-kernel@...r.kernel.org
Cc: Christian Marangi <ansuelsmth@...il.com>
Subject: [net-next PATCH] docs: ABI: sysfs-class-led-trigger-netdev: add new modes and entry
Document newly introduced modes and entry for the LED netdev trigger.
Add documentation for new modes:
- link_10
- link_100
- link_1000
- half_duplex
- full_duplex
Add documentation for new entry:
- hw_control
Also add additional info for the interval entry and the tx/rx modes with
the special case of hw_control ON.
Signed-off-by: Christian Marangi <ansuelsmth@...il.com>
---
.../testing/sysfs-class-led-trigger-netdev | 89 +++++++++++++++++++
1 file changed, 89 insertions(+)
diff --git a/Documentation/ABI/testing/sysfs-class-led-trigger-netdev b/Documentation/ABI/testing/sysfs-class-led-trigger-netdev
index 646540950e38..78b62a23b14a 100644
--- a/Documentation/ABI/testing/sysfs-class-led-trigger-netdev
+++ b/Documentation/ABI/testing/sysfs-class-led-trigger-netdev
@@ -13,6 +13,11 @@ Description:
Specifies the duration of the LED blink in milliseconds.
Defaults to 50 ms.
+ With hw_control ON, the interval value MUST be set to the
+ default value and cannot be changed.
+ Trying to set any value in this specific mode will return
+ an EINVAL error.
+
What: /sys/class/leds/<led>/link
Date: Dec 2017
KernelVersion: 4.16
@@ -39,6 +44,9 @@ Description:
If set to 1, the LED will blink for the milliseconds specified
in interval to signal transmission.
+ With hw_control ON, the blink interval is controlled by hardware
+ and won't reflect the value set in interval.
+
What: /sys/class/leds/<led>/rx
Date: Dec 2017
KernelVersion: 4.16
@@ -50,3 +58,84 @@ Description:
If set to 1, the LED will blink for the milliseconds specified
in interval to signal reception.
+
+ With hw_control ON, the blink interval is controlled by hardware
+ and won't reflect the value set in interval.
+
+What: /sys/class/leds/<led>/hw_control
+Date: Jun 2023
+KernelVersion: 6.5
+Contact: linux-leds@...r.kernel.org
+Description:
+ Communicate whether the LED trigger modes are driven by hardware
+ or software fallback is used.
+
+ If 0, the LED is using software fallback to blink.
+
+ If 1, the LED is using hardware control to blink and signal the
+ requested modes.
+
+What: /sys/class/leds/<led>/link_10
+Date: Jun 2023
+KernelVersion: 6.5
+Contact: linux-leds@...r.kernel.org
+Description:
+ Signal the link speed state of 10Mbps of the named network device.
+
+ If set to 0 (default), the LED's normal state is off.
+
+ If set to 1, the LED's normal state reflects the link state
+ speed of 10MBps of the named network device.
+ Setting this value also immediately changes the LED state.
+
+What: /sys/class/leds/<led>/link_100
+Date: Jun 2023
+KernelVersion: 6.5
+Contact: linux-leds@...r.kernel.org
+Description:
+ Signal the link speed state of 100Mbps of the named network device.
+
+ If set to 0 (default), the LED's normal state is off.
+
+ If set to 1, the LED's normal state reflects the link state
+ speed of 100Mbps of the named network device.
+ Setting this value also immediately changes the LED state.
+
+What: /sys/class/leds/<led>/link_1000
+Date: Jun 2023
+KernelVersion: 6.5
+Contact: linux-leds@...r.kernel.org
+Description:
+ Signal the link speed state of 1000Mbps of the named network device.
+
+ If set to 0 (default), the LED's normal state is off.
+
+ If set to 1, the LED's normal state reflects the link state
+ speed of 1000Mbps of the named network device.
+ Setting this value also immediately changes the LED state.
+
+What: /sys/class/leds/<led>/half_duplex
+Date: Jun 2023
+KernelVersion: 6.5
+Contact: linux-leds@...r.kernel.org
+Description:
+ Signal the link half duplex state of the named network device.
+
+ If set to 0 (default), the LED's normal state is off.
+
+ If set to 1, the LED's normal state reflects the link half
+ duplex state of the named network device.
+ Setting this value also immediately changes the LED state.
+
+What: /sys/class/leds/<led>/full_duplex
+Date: Jun 2023
+KernelVersion: 6.5
+Contact: linux-leds@...r.kernel.org
+Description:
+ Signal the link full duplex state of the named network device.
+
+ If set to 0 (default), the LED's normal state is off.
+
+ If set to 1, the LED's normal state reflects the link full
+ duplex state of the named network device.
+ Setting this value also immediately changes the LED state.
--
2.40.1
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