| Lars-Peter Clausen | c3b9566 | 2010-06-19 04:08:16 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2010, Lars-Peter Clausen <lars@metafoo.de> |
| 3 | * JZ4740 serial support |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify it |
| 6 | * under the terms of the GNU General Public License as published by the |
| 7 | * Free Software Foundation; either version 2 of the License, or (at your |
| 8 | * option) any later version. |
| 9 | * |
| 10 | * You should have received a copy of the GNU General Public License along |
| 11 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 12 | * 675 Mass Ave, Cambridge, MA 02139, USA. |
| 13 | * |
| 14 | */ |
| 15 | |
| 16 | #include <linux/io.h> |
| 17 | #include <linux/serial_core.h> |
| 18 | #include <linux/serial_reg.h> |
| 19 | |
| 20 | void jz4740_serial_out(struct uart_port *p, int offset, int value) |
| 21 | { |
| 22 | switch (offset) { |
| 23 | case UART_FCR: |
| 24 | value |= 0x10; /* Enable uart module */ |
| 25 | break; |
| 26 | case UART_IER: |
| 27 | value |= (value & 0x4) << 2; |
| 28 | break; |
| 29 | default: |
| 30 | break; |
| 31 | } |
| 32 | writeb(value, p->membase + (offset << p->regshift)); |
| 33 | } |