This long series is (as requested) a big overhaul of the lp55xx based LED driver. As notice for these kind of LED chip there was the bad habit of copy the old driver and just modify it enough to make it work with the new model. Till v4 I was also doing the same by following the pattern and the code format of previous driver. Since Lee didn't like this, here is the BIG series that generalize pretty much anything in the 4 model currently supported. Indeed, although the LED chip have fundamental difference (page support), things can be generalized and produce slimmer drivers by putting everything in the lp55xx-common shared module. This result in the new model lp5569 being very small with only the selftest portion to be custom. Lee also wasn't clear by the meaning of ENGINE in these LED driver, so here some simple explaination. This is very common on these TI LED chip. The ENGINE (there are always 3) is just some kind of processor that execute a program (precompiled code ASM like) loaded in the SRAM. Sysfs is used to load the pattern, and to start and stop the engine. These pattern can do all kind of complex thing with LEDs. Old LED chip had 32bytes of space for the pattern but newer one (like lp5569) have pages and if correctly configured can have massive pattern. These pattern can do all kind of magic like loops that make the LED pulse, change color and all kind of stuff. (For Lee, sorry if you will have to repeat some review that I might have missed in the lp5569 driver) Changes v6: - Fix compilation warning for ret unused in read_poll_timeout (no idea why this is flagged only on some particular arch...) - Fix missing bitfield.h in lp55x-common.c (again it seems this header gets included in the flow if the arch use them or not...) Changes v5: - Big generalization patch - Rework lp5569 driver with new generalized functions - Drop all copyright header in lp5569 as the driver got reworked entirely and it's not based on previous one anymore. Changes v4: - Fix reported buffer overflow due to a copypaste error - Add comments to describe fw size logic Changes v3: - Add ACK tag to DT patch - Enlarge and support program size up to 128bytes Changes v2: - Add ACK tag to DT patch - Fix compilation error with target that doesn't include bitfield.h Christian Marangi (20): dt-bindings: leds-lp55xx: limit pwr-sel property to ti,lp8501 dt-bindings: leds-lp55xx: Add new ti,lp5569 compatible leds: leds-lp55xx: generalize stop_all_engine OP leds: leds-lp55xx: generalize probe/remove functions leds: leds-lp55xx: generalize load_engine function leds: leds-lp55xx: generalize load_engine_and_select_page function leds: leds-lp55xx: generalize run_engine function leds: leds-lp55xx: generalize update_program_memory function leds: leds-lp55xx: generalize firmware_loaded function leds: leds-lp55xx: generalize led_brightness function leds: leds-lp55xx: generalize multicolor_brightness function leds: leds-lp55xx: generalize set_led_current function leds: leds-lp55xx: generalize turn_off_channels function leds: leds-lp55xx: generalize stop_engine function leds: leds-lp55xx: generalize sysfs engine_load and engine_mode leds: leds-lp55xx: generalize sysfs engine_leds leds: leds-lp55xx: generalize sysfs master_fader leds: leds-lp55xx: support ENGINE program up to 128 bytes leds: leds-lp55xx: drop deprecated defines leds: leds-lp5569: Add support for Texas Instruments LP5569 .../devicetree/bindings/leds/leds-lp55xx.yaml | 11 + drivers/leds/Kconfig | 16 +- drivers/leds/Makefile | 1 + drivers/leds/leds-lp5521.c | 405 +--------- drivers/leds/leds-lp5523.c | 728 ++--------------- drivers/leds/leds-lp5562.c | 261 +------ drivers/leds/leds-lp5569.c | 542 +++++++++++++ drivers/leds/leds-lp55xx-common.c | 730 +++++++++++++++++- drivers/leds/leds-lp55xx-common.h | 133 +++- drivers/leds/leds-lp8501.c | 313 +------- 10 files changed, 1523 insertions(+), 1617 deletions(-) create mode 100644 drivers/leds/leds-lp5569.c -- 2.43.0
