linux-kernel - [PATCH 0/3] auxdisplay: 7 segment LED display

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <20240225213423.690561-1-chris.packham@alliedtelesis.co.nz>
Date: Mon, 26 Feb 2024 10:34:20 +1300
From: Chris Packham <chris.packham@...iedtelesis.co.nz>
To: ojeda@...nel.org,
	robh+dt@...nel.org,
	krzysztof.kozlowski+dt@...aro.org,
	conor+dt@...nel.org,
	andrew@...n.ch,
	gregory.clement@...tlin.com,
	sebastian.hesselbarth@...il.com,
	andy.shevchenko@...il.com,
	geert@...ux-m68k.org,
	pavel@....cz,
	lee@...nel.org
Cc: devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-leds@...r.kernel.org,
	Chris Packham <chris.packham@...iedtelesis.co.nz>
Subject: [PATCH 0/3] auxdisplay: 7 segment LED display

This series adds a driver for a 7 segment LED display.

I'd like to get some feedback on how this could be extended to support >1
character. The driver as presented is sufficient for my hardware which only has
a single character display but I can see that for this to be generically useful
supporting more characters would be desireable.

Earlier I posted an idea that the characters could be represended by
sub-nodes[1] but there doesn't seem to be a way of having that and keeping the
convenience of using devm_gpiod_get_array() (unless I've missed something).

[1] - https://lore.kernel.org/lkml/2a8d19ee-b18b-4b7c-869f-7d601cea30b6@alliedtelesis.co.nz/

Chris Packham (3):
  auxdisplay: Add 7 segment LED display driver
  dt-bindings: auxdisplay: Add bindings for generic 7 segment LED
  ARM: dts: marvell: Add 7 segment LED display on x530

 .../auxdisplay/generic,gpio-7seg.yaml         |  40 +++++
 .../boot/dts/marvell/armada-385-atl-x530.dts  |  13 +-
 drivers/auxdisplay/Kconfig                    |   7 +
 drivers/auxdisplay/Makefile                   |   1 +
 drivers/auxdisplay/seg-led.c                  | 152 ++++++++++++++++++
 5 files changed, 212 insertions(+), 1 deletion(-)
 create mode 100644 Documentation/devicetree/bindings/auxdisplay/generic,gpio-7seg.yaml
 create mode 100644 drivers/auxdisplay/seg-led.c

-- 
2.43.2