linux-kernel - [PATCH RFC 0/4] leds: extend disk trigger

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Message-Id: <20260123-ledtrig_disk_-v1-0-07004756467b@posteo.de>
Date: Fri, 23 Jan 2026 19:05:03 +0000
From: Markus Probst <markus.probst@...teo.de>
To: Lee Jones <lee@...nel.org>, Pavel Machek <pavel@...nel.org>, 
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, 
 Jacek Anaszewski <jacek.anaszewski@...il.com>, 
 Damien Le Moal <dlemoal@...nel.org>, Niklas Cassel <cassel@...nel.org>, 
 John Garry <john.g.garry@...cle.com>, Jason Yan <yanaijie@...wei.com>, 
 "James E.J. Bottomley" <James.Bottomley@...senPartnership.com>, 
 "Martin K. Petersen" <martin.petersen@...cle.com>
Cc: Pavel Machek <pavel@....cz>, linux-leds@...r.kernel.org, 
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, 
 linux-ide@...r.kernel.org, linux-scsi@...r.kernel.org, 
 Markus Probst <markus.probst@...teo.de>
Subject: [PATCH RFC 0/4] leds: extend disk trigger

Extend the disk trigger
- to allow configuration of the blinking delays
  and whether the led should be kept on, on idle.
- to allow an individual led to be mapped to an ata port

I would also like to add another patch to this series, only leaving the led
on with invert 1 if also at least one disk is present on the ata port.
The led would then not only indicate activity, but also if a disk is
present.
That is why it is an RFC.

@Damien,Niclas: What would be the most straightforward way of telling
the led trigger if at least one disk is present on the ata port and
notifing it when this changes?

Thanks
- Markus Probst

Signed-off-by: Markus Probst <markus.probst@...teo.de>
---
Markus Probst (4):
      leds: dt-bindings: add disk trigger led pattern
      leds: dt-bindings: add disk trigger for each ata port
      leds: add delay_on, delay_off and invert attributes to disk trigger
      leds: add disk trigger for each ata port

 Documentation/devicetree/bindings/leds/common.yaml |  10 +-
 drivers/ata/libata-core.c                          |  22 +-
 drivers/leds/trigger/ledtrig-disk.c                | 298 ++++++++++++++++++++-
 drivers/scsi/libsas/sas_ata.c                      |   3 +-
 include/linux/leds.h                               |  16 +-
 include/linux/libata.h                             |   6 +-
 6 files changed, 332 insertions(+), 23 deletions(-)
---
base-commit: 24d479d26b25bce5faea3ddd9fa8f3a6c3129ea7
change-id: 20260123-ledtrig_disk_-1a500531865a