swh:1:snp:c3bf2749e3476071fa748f67b0ffa2fdc5fe49d9
Tip revision: 61e6cfa80de5760bbe406f4e815b7739205754d2 authored by Linus Torvalds on 13 October 2013, 22:41:28 UTC
Linux 3.12-rc5
Linux 3.12-rc5
Tip revision: 61e6cfa
i8042-io.h
#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 = 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 */