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_SH_CAYMAN) 28#include <asm/irq.h> 29#elif defined(CONFIG_PPC) 30extern int of_i8042_kbd_irq; 31extern int of_i8042_aux_irq; 32# define I8042_KBD_IRQ of_i8042_kbd_irq 33# define I8042_AUX_IRQ of_i8042_aux_irq 34#else 35# define I8042_KBD_IRQ 1 36# define I8042_AUX_IRQ 12 37#endif 38 39 40/* 41 * Register numbers. 42 */ 43 44#define I8042_COMMAND_REG 0x64 45#define I8042_STATUS_REG 0x64 46#define I8042_DATA_REG 0x60 47 48static inline int i8042_read_data(void) 49{ 50 return inb(I8042_DATA_REG); 51} 52 53static inline int i8042_read_status(void) 54{ 55 return inb(I8042_STATUS_REG); 56} 57 58static inline void i8042_write_data(int val) 59{ 60 outb(val, I8042_DATA_REG); 61} 62 63static inline void i8042_write_command(int val) 64{ 65 outb(val, I8042_COMMAND_REG); 66} 67 68static inline int i8042_platform_init(void) 69{ 70/* 71 * On some platforms touching the i8042 data register region can do really 72 * bad things. Because of this the region is always reserved on such boxes. 73 */ 74#if defined(CONFIG_PPC) 75 if (check_legacy_ioport(I8042_DATA_REG)) 76 return -ENODEV; 77#endif 78#if !defined(__sh__) && !defined(__alpha__) && !defined(__mips__) 79 if (!request_region(I8042_DATA_REG, 16, "i8042")) 80 return -EBUSY; 81#endif 82 83 i8042_reset = 1; 84 return 0; 85} 86 87static inline void i8042_platform_exit(void) 88{ 89#if !defined(__sh__) && !defined(__alpha__) 90 release_region(I8042_DATA_REG, 16); 91#endif 92} 93 94#endif /* _I8042_IO_H */ 95