[PATCH v9 0/4] leds: add new LED driver for TI LP5812

[Nam Tran <trannamatk@gmail.com>]

This patch series adds support for the TI/National Semiconductor LP5812
4x3 matrix RGB LED driver. The driver supports features such as autonomous
animation and time-cross-multiplexing (TCM) for dynamic LED effects.

Following feedback from both the LED and auxdisplay subsystem maintainers,
the driver has been moved back to the LED subsystem, under drivers/leds/rgb/.
This version integrates with the existing multicolor LED APIs, avoiding custom
sysfs where standard LED interfaces are sufficient.

Signed-off-by: Nam Tran <trannamatk@gmail.com>
---
Changes in v9:
- Move driver back to drivers/leds/rgb/
- Integrate with LED multicolor framework
- Refactor and simplify custom sysfs handling
- Extend Device Tree binding to support multi-led@ nodes using leds-class-multicolor.yaml
- Update documentation to reflect the updated sysfs
- Link to v8: https://lore.kernel.org/lkml/20250427082447.138359-1-trannamatk@gmail.com/

Changes in v8:
- Move driver to drivers/auxdisplay/ instead of drivers/leds/.
- Rename files from leds-lp5812.c/.h to lp5812.c/.h.
- Move ti,lp5812.yaml binding to auxdisplay/ directory,
  and update the title and $id to match new path.
- No functional changes to the binding itself (keep Reviewed-by).
- Update commit messages and patch titles to reflect the move.
- Link to v7: https://lore.kernel.org/linux-leds/20250422190121.46839-1-trannamatk@gmail.com/

Changes in v7:
- Mark `chip_leds_map` as const.
- Use consistent `ret` initialization.
- Simplify the function `set_mix_sel_led()`.
- Refactor `dev_config_show()` and `led_auto_animation_show()` to avoid temp buffer, malloc/free.
- Simplify the code and ensure consistent use of mutex lock/unlock in show/store functions.
- Remove `total_leds` and `total_aeu`.
- Link to v6: https://lore.kernel.org/linux-leds/20250419184333.56617-1-trannamatk@gmail.com/

Changes in v6:
- Add `vcc-supply` property to describe the LP5812 power supply.
- Remove `chan-name` property and entire LED subnodes, as they are not needed.
- Update LP5812 LED driver node to Raspberry Pi 4 B Device Tree, based on updated binding.
- Link to v5: https://lore.kernel.org/linux-leds/20250414145742.35713-1-trannamatk@gmail.com/

Changes in v5:
- Rebase on v6.15-rc2
- Removed unused functions (lp5812_dump_regs, lp5812_update_bit).
- Address Krzysztof's review comments
- Link to v4: https://lore.kernel.org/linux-leds/20250405183246.198568-1-trannamatk@gmail.com/
---

Nam Tran (4):
  dt-bindings: leds: add TI/National Semiconductor LP5812 LED Driver
  leds: add TI/National Semiconductor LP5812 LED Driver
  docs: ABI: Document LP5812 LED sysfs interfaces
  docs: leds: Document TI LP5812 LED driver

 .../ABI/testing/sysfs-bus-i2c-devices-lp5812  |   40 +
 .../ABI/testing/sysfs-class-led-lp5812        |  120 +
 .../devicetree/bindings/leds/ti,lp5812.yaml   |  264 +++
 Documentation/leds/index.rst                  |    1 +
 Documentation/leds/leds-lp5812.rst            |   84 +
 MAINTAINERS                                   |   13 +
 drivers/leds/rgb/Kconfig                      |   13 +
 drivers/leds/rgb/Makefile                     |    1 +
 drivers/leds/rgb/leds-lp5812.c                | 1946 +++++++++++++++++
 drivers/leds/rgb/leds-lp5812.h                |  228 ++
 10 files changed, 2710 insertions(+)
 create mode 100644 Documentation/ABI/testing/sysfs-bus-i2c-devices-lp5812
 create mode 100644 Documentation/ABI/testing/sysfs-class-led-lp5812
 create mode 100644 Documentation/devicetree/bindings/leds/ti,lp5812.yaml
 create mode 100644 Documentation/leds/leds-lp5812.rst
 create mode 100644 drivers/leds/rgb/leds-lp5812.c
 create mode 100644 drivers/leds/rgb/leds-lp5812.h


base-commit: f09079bd04a924c72d555cd97942d5f8d7eca98c
-- 
2.25.1