php - insert hashed password while register in codeigniter

I have user pannel in a codeigniter. where user have a option to register. i want to user's password to hashed in my database. i have done the registeration with normal password but i want now password to be hashed. I have taken help with similar questions but resulted into an error

controller

    public function signupvalidation()
    {
        $this->load->library('form_validation');

        if($this->form_validation->run('userregister'))
        {
           $post = $this->input->post();
           $this->load->model('userregister');
           if($this->userregister->register1($post))
           {
                echo "insert succesfully";
           }

           else
           {
            echo "not succesfully";
           }
           $this->session->set_flashdata('insertsuccess','User Registration Successfully');
          return redirect('user/signup');
        }
        else
        {      
                $this->load->view('user/usersignup');
        }
        
    }
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model

    private function hash_password($password){
        return password_hash($password, PASSWORD_BCRYPT);
     }
     public function register1($name,$email,$password){
        $data = array(
          'name' => $name,
           'email' => $email,
          'password' => $this->hash_password($password)
     );
     return $this->db->insert('user', $data);
     }
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the error i have got

An uncaught Exception was encountered
Type: ArgumentCountError

Message: Too few arguments to function userregister::register1(), 1 passed in C:\xampp\htdocs\blog\application\controllers\user.php on line 84 and exactly 3 expected

Filename: C:\xampp\htdocs\blog\application\models\userregister.php

Line Number: 14

Backtrace:

File: C:\xampp\htdocs\blog\application\controllers\user.php
Line: 84
Function: register1

File: C:\xampp\htdocs\blog\index.php
Line: 315
Function: require_once
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please help how to do it

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