TWL_MODULE_PWM
ret = twl_i2c_write(TWL_MODULE_PWM, pwm_config, base, 2);
twl_i2c_write_u8(TWL_MODULE_PWM, 0x80, TWL_PWM0_ON);
twl_i2c_write_u8(TWL_MODULE_PWM, MAX_VALUE, TWL_PWM0_OFF);
twl_i2c_write_u8(TWL_MODULE_PWM, MIN_VALUE + brightness, TWL_PWM0_OFF);