This series adds the support for the TLC5925 LED controller. This LED controller is driven through SPI. There is little internal logic and it can be thought of as a deserializer + latches. The TLC5925 itself drives up to 16 LEDs, but multiple TLC5925s can be chained to drive more. The first patch describes the dt bindings. The second patch implements most of the driver and supports only synchronous brightness setting (brightness_set_blocking). The last patch implements the non-blocking version (brightness_set). changes v5->v6: * Make the 'ti,shif-register-length' property optional. The default value is 16: the length of the shift register of a single TLC5925. * fix minor issues in the binding description changes v4->v5: * add the headers that the code is a direct user of * replace dev_err() with dev_err_probe() in ->probe() * comestic changes (spaces, alignment and blank lines) changes v3->v4: * add missing MODULE_DEVICE_TABLE(of, ...) * use dev_err_probe() to avoid spamming the log in case of deferred probe * use bitmap ops instead of direct memory access + lock * sort headers and a few other cosmetic changes. changes v2->v3: * fixed the yaml description of the bindings (now passes dt_binding_check) * renamed shit-register-length into ti,shift-register-length and specify its type changes v1->v2: * renamed property shift_register_length into shift-register-length * add a SPI MODULE_DEVICE_TABLE structure * fixed the yaml description of the bindings (now passes dt_binding_check) Jean-Jacques Hiblot (3): dt-bindings: leds: Add bindings for the TLC5925 controller leds: Add driver for the TLC5925 LED controller leds: tlc5925: Add support for non blocking operations .../devicetree/bindings/leds/ti,tlc5925.yaml | 105 ++++++++++ drivers/leds/Kconfig | 6 + drivers/leds/Makefile | 1 + drivers/leds/leds-tlc5925.c | 182 ++++++++++++++++++ 4 files changed, 294 insertions(+) create mode 100644 Documentation/devicetree/bindings/leds/ti,tlc5925.yaml create mode 100644 drivers/leds/leds-tlc5925.c -- 2.25.1
