96 lines
1.9 KiB
C
96 lines
1.9 KiB
C
|
#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__)
|
||
|
|
if (!request_region(I8042_DATA_REG, 16, "i8042"))
|
||
|
|
return -EBUSY;
|
||
|
|
#endif
|
||
|
|
|
||
|
|
i8042_reset = I8042_RESET_ALWAYS;
|
||
|
|
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 */
|