/* * 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)); }