1#ifndef _I8042_IO_H 2#define _I8042_IO_H 3 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 version 2 as published by 7 * the Free Software Foundation. 8 */ 9 10/* 11 * Names. 12 */ 13 14#define I8042_KBD_PHYS_DESC "isa0060/serio0" 15#define I8042_AUX_PHYS_DESC "isa0060/serio1" 16#define I8042_MUX_PHYS_DESC "isa0060/serio%d" 17 18/* 19 * IRQs. 20 */ 21 22#ifdef __alpha__ 23# define I8042_KBD_IRQ 1 24# define I8042_AUX_IRQ (RTC_PORT(0) == 0x170 ? 9 : 12) /* Jensen is special */ 25#elif defined(__arm__) 26#include <asm/irq.h> 27#elif defined(CONFIG_SUPERH64) 28#include <asm/irq.h> 29#else 30# define I8042_KBD_IRQ 1 31# define I8042_AUX_IRQ 12 32#endif 33 34 35/* 36 * Register numbers. 37 */ 38 39#define I8042_COMMAND_REG 0x64 40#define I8042_STATUS_REG 0x64 41#define I8042_DATA_REG 0x60 42 43static inline int i8042_read_data(void) 44{ 45 return inb(I8042_DATA_REG); 46} 47 48static inline int i8042_read_status(void) 49{ 50 return inb(I8042_STATUS_REG); 51} 52 53static inline void i8042_write_data(int val) 54{ 55 outb(val, I8042_DATA_REG); 56} 57 58static inline void i8042_write_command(int val) 59{ 60 outb(val, I8042_COMMAND_REG); 61} 62 63static inline int i8042_platform_init(void) 64{ 65/* 66 * On some platforms touching the i8042 data register region can do really 67 * bad things. Because of this the region is always reserved on such boxes. 68 */ 69#if defined(CONFIG_PPC_MERGE) 70 if (check_legacy_ioport(I8042_DATA_REG)) 71 return -ENODEV; 72#endif 73#if !defined(__sh__) && !defined(__alpha__) && !defined(__mips__) 74 if (!request_region(I8042_DATA_REG, 16, "i8042")) 75 return -EBUSY; 76#endif 77 78 i8042_reset = 1; 79 return 0; 80} 81 82static inline void i8042_platform_exit(void) 83{ 84#if !defined(__sh__) && !defined(__alpha__) 85 release_region(I8042_DATA_REG, 16); 86#endif 87} 88 89#endif /* _I8042_IO_H */ 90