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kernel/linux-imx6_3.14.28/arch/mips/jz4740/serial.c 936 Bytes
6b13f685e   김민수   BSP 최초 추가
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  /*
   *  Copyright (C) 2010, Lars-Peter Clausen <lars@metafoo.de>
   *  JZ4740 serial support
   *
   *  This program is free software; you can redistribute	 it and/or modify it
   *  under  the terms of	 the GNU General  Public License as published by the
   *  Free Software Foundation;  either version 2 of the	License, or (at your
   *  option) any later version.
   *
   *  You should have received a copy of the  GNU General Public License along
   *  with this program; if not, write  to the Free Software Foundation, Inc.,
   *  675 Mass Ave, Cambridge, MA 02139, USA.
   *
   */
  
  #include <linux/io.h>
  #include <linux/serial_core.h>
  #include <linux/serial_reg.h>
  
  void jz4740_serial_out(struct uart_port *p, int offset, int value)
  {
  	switch (offset) {
  	case UART_FCR:
  		value |= 0x10; /* Enable uart module */
  		break;
  	case UART_IER:
  		value |= (value & 0x4) << 2;
  		break;
  	default:
  		break;
  	}
  	writeb(value, p->membase + (offset << p->regshift));
  }