W83L786NG_REG_FAN_CFG
pwmcfg = w83l786ng_read_value(client, W83L786NG_REG_FAN_CFG);
reg = w83l786ng_read_value(client, W83L786NG_REG_FAN_CFG);
w83l786ng_write_value(client, W83L786NG_REG_FAN_CFG, reg);
reg = w83l786ng_read_value(client, W83L786NG_REG_FAN_CFG);
w83l786ng_write_value(client, W83L786NG_REG_FAN_CFG, reg);