qmk_firmware_custom/quantum/rgb_matrix_animations/cycle_all_anim.h

#ifndef DISABLE_RGB_MATRIX_CYCLE_ALL
RGB_MATRIX_EFFECT(CYCLE_ALL)
#    ifdef RGB_MATRIX_CUSTOM_EFFECT_IMPLS

static void CYCLE_ALL_math(HSV* hsv, uint8_t i, uint8_t time) { hsv->h = time; }

bool CYCLE_ALL(effect_params_t* params) { return effect_runner_i(params, &CYCLE_ALL_math); }

#    endif  // RGB_MATRIX_CUSTOM_EFFECT_IMPLS
#endif      // DISABLE_RGB_MATRIX_CYCLE_ALL