GPIO generator for Kabylake

kabylake.php

<?php
class IntelToolGpio {
    private SplFileObject $logFile;
    
    public function __construct(string $logPath){
        $this->logFile = new SplFileObject($logPath, 'r');
    }

    private function gpioRows(){
        $HEX = "0x[0-9a-fA-F]+";

        $fh = $this->logFile;
        while(!$fh->eof()){
            $line = $fh->fgets();
            if($line === false) continue;

            if(!preg_match("/({$HEX}): ({$HEX}) (GP[PD].*?)\s+(.*?)(?:\s|$)/", $line, $m)){
                continue;
            }
            $m[1] = hexdec($m[1]);
            $m[2] = hexdec($m[2]);
            yield [$m[1], $m[2], $m[3], $m[4]];
        }
    }

    private static $RESET_TBL = ['PWROK', 'DEEP', 'PLTRST', 'RSMRST'];
    private static $PULL_TBL = ['NONE', 'DN_5K', 'DN_20K', 'UP_1K', 'UP_5K', 'UP_2K', 'UP_20K', 'UP_667', 'NATIVE'];
    private static $MODE_TBL = ['GPIO','NF1','NF2','NF3','NF4','NF5','NF6','NF7'];

    private static function reset_name(int $value){
        return self::$RESET_TBL[$value] ?? '<unknown>';
    }
    private static function pull_name(int $value){
        return self::$PULL_TBL[$value] ?? '<unknown>';
    }
    private static function mode_name(int $value){
        return self::$MODE_TBL[$value] ?? '<unknown>';
    }

    public function generate(){
        /**
            //uint32// .pad = 0,
        //uint32// .pad_config[0] = (2U << 30) | ((1) << 10),
        //uint32// .pad_config[1] = (0x0 << 10) | 0,
            //enum//   .lock_action = GPIO_UNLOCK,
        */
        foreach($this->gpioRows() as $item){
            list($pad_cfg, $pad_value, $pad_name, $pad_func) = $item;
            $pad_rst = ($pad_cfg >> 30) & 0x3;
            $pad_pull = ($pad_cfg >> 10) & 0xF;
            //$pad_mode = ($pad_cfg >> 10) & 0x7;
            $pad_mode = 0;
            printf("rst: %s, pull: %s, mode: %s [%s (%s)]\n", 
                self::reset_name($pad_rst),
                self::pull_name($pad_pull),
                self::mode_name($pad_mode),
                $pad_name, $pad_func
            );
        }
    }
}