#ifndef _I8042_IO_H #define _I8042_IO_H /* * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 as published by * the Free Software Foundation. */ /* * Names. */ #define I8042_KBD_PHYS_DESC "isa0060/serio0" #define I8042_AUX_PHYS_DESC "isa0060/serio1" #define I8042_MUX_PHYS_DESC "isa0060/serio%d" /* * IRQs. */ #ifdef __alpha__ # define I8042_KBD_IRQ 1 # define I8042_AUX_IRQ (RTC_PORT(0) == 0x170 ? 9 : 12) /* Jensen is special */ #elif defined(__arm__) /* defined in include/asm-arm/arch-xxx/irqs.h */ #include <asm/irq.h> #elif defined(CONFIG_SH_CAYMAN) #include <asm/irq.h> #elif defined(CONFIG_PPC) extern int of_i8042_kbd_irq; extern int of_i8042_aux_irq; # define I8042_KBD_IRQ of_i8042_kbd_irq # define I8042_AUX_IRQ of_i8042_aux_irq #else # define I8042_KBD_IRQ 1 # define I8042_AUX_IRQ 12 #endif /* * Register numbers. */ #define I8042_COMMAND_REG 0x64 #define I8042_STATUS_REG 0x64 #define I8042_DATA_REG 0x60 static inline int i8042_read_data(void) { return inb(I8042_DATA_REG); } static inline int i8042_read_status(void) { return inb(I8042_STATUS_REG); } static inline void i8042_write_data(int val) { outb(val, I8042_DATA_REG); } static inline void i8042_write_command(int val) { outb(val, I8042_COMMAND_REG); } static inline int i8042_platform_init(void) { /* * On some platforms touching the i8042 data register region can do really * bad things. Because of this the region is always reserved on such boxes. */ #if defined(CONFIG_PPC) if (check_legacy_ioport(I8042_DATA_REG)) return -ENODEV; #endif #if !defined(__sh__) && !defined(__alpha__) && !defined(__mips__) if (!request_region(I8042_DATA_REG, 16, "i8042")) return -EBUSY; #endif i8042_reset = 1; return 0; } static inline void i8042_platform_exit(void) { #if !defined(__sh__) && !defined(__alpha__) release_region(I8042_DATA_REG, 16); #endif } #endif /* _I8042_IO_H */