Changes in sysfs-class-led-trigger-tty

96d947d4 - Documentation: leds: Update led-trigger-tty ABI description

Wed, 10 Jan 2024 13:34:10 +0000

Documentation: leds: Update led-trigger-tty ABI descriptionThe 'led-trigger-tty' uses the same naming in the ABI documentation asthe 'led-trigger-netdev'. Which leads to the following warning whenbuilding the documentation.Warning: /sys/class/leds//rx is defined 2 times:Documentation/ABI/testing/sysfs-class-led-trigger-tty:7Documentation/ABI/testing/sysfs-class-led-trigger-netdev:49Warning: /sys/class/leds//tx is defined 2 times:Documentation/ABI/testing/sysfs-class-led-trigger-tty:15Documentation/ABI/testing/sysfs-class-led-trigger-netdev:34Renaming the 'What' path by prefixing it with 'tty_' solves this problem.Fixes: 6dec659896b4 ("leds: ledtrig-tty: Add additional line state evaluation")Reported-by: Stephen Rothwell Signed-off-by: Florian Eckert Link: https://lore.kernel.org/r/20240110133410.81645-1-fe@dev.tdt.deSigned-off-by: Lee Jones (cherry picked from commit ea411a8422c1d7f8193d726fb76ba09534b6a5fe)Signed-off-by: Lee Jones List of files: /linux-6.15/Documentation/ABI/testing/sysfs-class-led-trigger-tty

6dec6598 - leds: ledtrig-tty: Add additional line state evaluation

Mon, 27 Nov 2023 11:03:11 +0000

leds: ledtrig-tty: Add additional line state evaluationThe serial tty interface also supports additional input signals, thatcan also be evaluated within this trigger. This change is adding thefollowing additional input sources, which could be controlledvia the '/sys/class//' sysfs interface.Explanation:DCE = Data Communication Equipment (Modem)DTE = Data Terminal Equipment (Computer)- cts: DCE is ready to accept data from the DTE (CTS = Clear To Send). If the line state is detected, the LED is switched on. If set to 0 (default), the LED will not evaluate CTS. If set to 1, the LED will evaluate CTS.- dsr: DCE is ready to receive and send data (DSR = Data Set Ready). If the line state is detected, the LED is switched on. If set to 0 (default), the LED will not evaluate DSR. If set to 1, the LED will evaluate DSR.- dcd: DTE is receiving a carrier from the DCE (DCD = Data Carrier Detect). If the line state is detected, the LED is switched on. If set to 0 (default), the LED will not evaluate DCD. If set to 1, the LED will evaluate DCD.- rng: DCE has detected an incoming ring signal on the telephone line (RNG = Ring Indicator). If the line state is detected, the LED is switched on. If set to 0 (default), the LED will not evaluate RNG. If set to 1, the LED will evaluate RNG.Also add an invert flag on LED blink, so that the LED blinks in thecorrect order.* If one off the new enabled input signals are evaluatet as 'enabled', and data are transmitted, then the LED should first blink 'off' and then 'on' (invert).* If all the new enabled input signals are evaluatet as 'disabled', and data are transmitted, then the LED should first blink 'on' and then 'off'.Signed-off-by: Florian Eckert Reviewed-by: Maarten Brock Reviewed-by: Greg Kroah-Hartman Link: https://lore.kernel.org/r/20231127110311.3583957-5-fe@dev.tdt.deSigned-off-by: Lee Jones List of files: /linux-6.15/Documentation/ABI/testing/sysfs-class-led-trigger-tty

5b755ca6 - leds: ledtrig-tty: Make rx tx activitate configurable

Mon, 27 Nov 2023 11:03:10 +0000

leds: ledtrig-tty: Make rx tx activitate configurableUntil now, the LED blinks when data is sent via the tty (rx/tx).This is not configurable.This change adds the possibility to make the indication for the directionof the transmitted data independently controllable via the new rx andtx sysfs entries.- rx: Signal reception (rx) of data on the named tty device. If set to 0, the LED will not blink on reception. If set to 1 (default), the LED will blink on reception.- tx: Signal transmission (tx) of data on the named tty device. If set to 0, the LED will not blink on transmission. If set to 1 (default), the LED will blink on transmission.This new sysfs entry are on by default. Thus the trigger behaves asbefore this change.Signed-off-by: Florian Eckert Reviewed-by: Greg Kroah-Hartman Link: https://lore.kernel.org/r/20231127110311.3583957-4-fe@dev.tdt.deSigned-off-by: Lee Jones List of files: /linux-6.15/Documentation/ABI/testing/sysfs-class-led-trigger-tty

fd4a641a - leds: trigger: implement a tty trigger

Wed, 13 Jan 2021 17:30:18 +0000

leds: trigger: implement a tty triggerUsage is as follows: myled=ledname tty=ttyS0 echo tty > /sys/class/leds/$myled/trigger echo $tty > /sys/class/leds/$myled/ttyname. When this new trigger is active it periodically checks the tty'sstatistics and when it changed since the last check the led is flashedonce.Signed-off-by: Uwe Kleine-König Link: https://lore.kernel.org/r/20210113173018.bq2fkea2o3yp6rf6@pengutronix.deSigned-off-by: Greg Kroah-Hartman List of files: /linux-6.15/Documentation/ABI/testing/sysfs-class-led-trigger-tty