Hi, This patch series adds DT bindings (patch #1) and the corresponding driver (patch #2) for the Panasonic AN30259A 3-channel LED driver. AN30259A uses an internal clock for controlling brightness/on-off cycles, but also supports using an external PWM/clock input. This patch series only implements support for the former. The AN30259A is connected using I2C, and the datasheet is freely available[0]. Changes since v4 (mistakenly sent as v3): * Rebased on v4.19-rc2 * Namespace all macros with AN30259A_ prefix * Fix trivial compiler/checkpatch --strict warnings Changes since v3: * Rebased on v4.18-rc3. * Drop unnecessary DUTYMAX/MID calculations when blinking: previously I'd thought that the PWM duty values were expressed as a percentage of the maximum current output, but in reality they're a percentage of the current set in the LEDxCC registers. This simplifies the code quite a bit. * Corrected MODULE_LICENSE declaration. * Return -EINVAL from set_blink if the blink rate is unsupported in hardware. * Fix more checkpatch --strict issues. Changes since v2: * Drop "an30259a:" prefix from bindings and add it in the device driver instead. * Use led-controller instead of leds for sample DT binding. * Use ":indicator" instead of ":notification" in sample DT binding. * Merge an30259a_led_set and an30259a_brightness to an30259a_brightness_set (and same for blink functions). * Explain the range limitations of the AN30259A's sloping mode in the code - the AN30259A only has a 7-bit PWM range in slope mode, and the bottom 3 bits are always set. Changes since v1: * Documentation formatting/grammar fixes. * Use reg property instead of led-sources for leds. * Add default-state support. * Fix auto-probing when built as a module. * Simplified DT parsing code. * Use devm version of led_class_register(). * Fix LED naming scheme. * Fixed checkpatch --strict issues. Cheers, Simon [0]: https://www.alliedelec.com/m/d/a9d2b3ee87c2d1a535a41dd747b1c247.pdf Simon Shields (2): dt-bindings: leds: document Panasonic AN30259A bindings leds: add Panasonic AN30259A support .../bindings/leds/leds-an30259a.txt | 43 ++ drivers/leds/Kconfig | 10 + drivers/leds/Makefile | 1 + drivers/leds/leds-an30259a.c | 368 ++++++++++++++++++ 4 files changed, 422 insertions(+) create mode 100644 Documentation/devicetree/bindings/leds/leds-an30259a.txt create mode 100644 drivers/leds/leds-an30259a.c -- 2.18.0
