On 22. 02. 23, 8:55, Florian Eckert wrote:
Add additional modes to trigger the selected LED. The following modes are supported: Tx/Rx: Flash LED on data transmission (default) CTS: DCE Ready to accept data from the DTE. DSR: DCE is ready to receive and send data. CAR: DCE is receiving a carrier from a remote DTE. RNG: DCE has detected an incoming ring signal. The mode can be changed for example with the following command: echo "CTS" > /sys/class/leds/<led>/mode This would turn on the LED, when the DTE(modem) signals the DCE that it is ready to accept data. Signed-off-by: Florian Eckert <fe@xxxxxxxxxx> --- .../ABI/testing/sysfs-class-led-trigger-tty | 16 ++ drivers/leds/trigger/ledtrig-tty.c | 145 ++++++++++++++++-- 2 files changed, 146 insertions(+), 15 deletions(-) diff --git a/Documentation/ABI/testing/sysfs-class-led-trigger-tty b/Documentation/ABI/testing/sysfs-class-led-trigger-tty index 2bf6b24e781b..4023585d3acf 100644 --- a/Documentation/ABI/testing/sysfs-class-led-trigger-tty +++ b/Documentation/ABI/testing/sysfs-class-led-trigger-tty @@ -4,3 +4,19 @@ KernelVersion: 5.10 Contact: linux-leds@xxxxxxxxxxxxxxx Description: Specifies the tty device name of the triggering tty + +What: /sys/class/leds/<led>/mode +Date: January 2023 +KernelVersion: 6.3 +Description: + Specifies the operating to trigger the LED. + The following operating modes are supported:
Here, you should add a \n. Otherwise it won't start the list properly. Check the output e.g. by:
make htmldocs SPHINXDIRS="admin-guide" then open the built result in a browser: Documentation/output/admin-guide/abi-testing.html#abi-sys-class-leds-led-mode
+ * Tx/Rx: Flash LED on data transmission (default) + * CTS: DCE Ready to accept data from the DTE. + LED on if line is high. + * DSR: DCE is ready to receive and send data. + LED on if line is high. + * CAR: DCE has detected a carrier from a remote DTE. + LED on if line is high. + * RNG: DCE has detected an incoming ring signal. + LED on if line is high.
-- js suse labs
