This introduces a new LED driver that enables us to create a virtual LED
level meter device that consists of multiple LED devices by different
drivers.
Previously I developed the level meter feature for leds-gpio ("leds: gpio:
support multi-level brightness") [1]. Then I got a feedback from
Bjorn Andersson and made more generic new driver. This driver is also
inspired by led-backlight driver patchset [2] and actually requires
devm_of_led_get() function provided by the patchset.
[1] https://lore.kernel.org/linux-leds/1570203299-4270-1-git-send-email-akinobu.mita@xxxxxxxxx/
[2] https://lore.kernel.org/linux-leds/20191009085127.22843-1-jjhiblot@xxxxxx/
* v2
- Use proper subject line for dt-binding patch.
- Swap the patch order.
- Various fixes noticed by Rob and Dan.
- Update example usage for brightness-weights property
- Use unified device proerty interface as much as possible.
- Support linux,default-trigger and default-state properties.
Akinobu Mita (2):
dt-bindings: leds: Add leds-meter binding
leds: Add generic LED level meter driver
.../devicetree/bindings/leds/leds-meter.yaml | 67 +++++++++
drivers/leds/Kconfig | 10 ++
drivers/leds/Makefile | 1 +
drivers/leds/leds-meter.c | 151 +++++++++++++++++++++
4 files changed, 229 insertions(+)
create mode 100644 Documentation/devicetree/bindings/leds/leds-meter.yaml
create mode 100644 drivers/leds/leds-meter.c
Cc: Rob Herring <robh+dt@xxxxxxxxxx>
Cc: Mark Rutland <mark.rutland@xxxxxxx>
Cc: Bjorn Andersson <bjorn@xxxxxxx>
Cc: Tomi Valkeinen <tomi.valkeinen@xxxxxx>
Cc: Jean-Jacques Hiblot <jjhiblot@xxxxxx>
Cc: Jacek Anaszewski <jacek.anaszewski@xxxxxxxxx>
Cc: Pavel Machek <pavel@xxxxxx>
Cc: Dan Murphy <dmurphy@xxxxxx>
--
2.7.4
