| Ralf Baechle | 334955e | 2011-06-01 19:04:57 +0100 | [diff] [blame] | 1 | /* |
| 2 | * This file is subject to the terms and conditions of the GNU General Public |
| 3 | * License. See the file "COPYING" in the main directory of this archive |
| 4 | * for more details. |
| Ralf Baechle | cb2455a | 2011-06-01 19:04:58 +0100 | [diff] [blame] | 5 | * |
| 6 | * Machine specific IO port address definition for generic. |
| 7 | * Written by Osamu Tomita <tomita@cinet.co.jp> |
| Ralf Baechle | 334955e | 2011-06-01 19:04:57 +0100 | [diff] [blame] | 8 | */ |
| 9 | #ifndef __LINUX_I8253_H |
| 10 | #define __LINUX_I8253_H |
| 11 | |
| Ralf Baechle | 49cf3f2 | 2011-06-01 19:05:07 +0100 | [diff] [blame^] | 12 | #include <linux/param.h> |
| Ralf Baechle | cb2455a | 2011-06-01 19:04:58 +0100 | [diff] [blame] | 13 | #include <linux/spinlock.h> |
| Ralf Baechle | 49cf3f2 | 2011-06-01 19:05:07 +0100 | [diff] [blame^] | 14 | #include <linux/timex.h> |
| Ralf Baechle | 334955e | 2011-06-01 19:04:57 +0100 | [diff] [blame] | 15 | #include <asm/i8253.h> |
| 16 | |
| Ralf Baechle | cb2455a | 2011-06-01 19:04:58 +0100 | [diff] [blame] | 17 | /* i8253A PIT registers */ |
| 18 | #define PIT_MODE 0x43 |
| 19 | #define PIT_CH0 0x40 |
| 20 | #define PIT_CH2 0x42 |
| 21 | |
| Ralf Baechle | 49cf3f2 | 2011-06-01 19:05:07 +0100 | [diff] [blame^] | 22 | #define PIT_LATCH ((PIT_TICK_RATE + HZ/2) / HZ) |
| 23 | |
| Ralf Baechle | cb2455a | 2011-06-01 19:04:58 +0100 | [diff] [blame] | 24 | #define inb_pit inb_p |
| 25 | #define outb_pit outb_p |
| 26 | |
| 27 | extern raw_spinlock_t i8253_lock; |
| 28 | |
| Ralf Baechle | 334955e | 2011-06-01 19:04:57 +0100 | [diff] [blame] | 29 | #endif /* __LINUX_I8253_H */ |