[PATCH 0/2] leds: ledtrig-tty: mode xtension

Florian Eckert
2023-02-13T14:25:06Z

The following patch set adds the possibility to change the tty trigger
modes. Until now, the LED is flashed when data is transmitted. With a
legacy serial interface there are additional signal lines.
If this line changes then the LED is turned on/off.

CTS: Clear To Send -> DCE is ready to accept data from the DTE
DSR: Data Set Ready -> DCE is ready to receive and send data.
CAR: Data Carrier Detect -> DCE is receiving a carrier from a remote DCE.
RNG: Ring Indicator -> DCE has detected an incoming ring on the line.

Florian Eckert (2):
tty: new helper function tty_get_mget
leds: trigger: ledtrig-tty: add additional modes

.../ABI/testing/sysfs-class-led-trigger-tty | 16 ++
drivers/leds/trigger/ledtrig-tty.c | 148 ++++++++++++++++--
drivers/tty/tty_io.c | 32 +++-
include/linux/tty.h | 3 +-
4 files changed, 176 insertions(+), 23 deletions(-)

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2.30.2