Symbol: YB_KBD_BL_PWM_PERIOD
drivers/platform/x86/lenovo/yogabook.c
435
.period = YB_KBD_BL_PWM_PERIOD,
drivers/platform/x86/lenovo/yogabook.c
436
.duty_cycle = YB_KBD_BL_PWM_PERIOD * level / YB_KBD_BL_MAX,