/* SPDX-License-Identifier: GPL-2.0-only */
#ifndef _I8042_IO_H
#define _I8042_IO_H
/*
* Names .
*/
#define I8042_KBD_PHYS_DESC "isa0060/serio0"
#define I8042_AUX_PHYS_DESC "isa0060/serio1"
#define I8042_MUX_PHYS_DESC "isa0060/serio%d"
/*
* IRQs .
*/
#if defined (__arm__)
/* defined in include/asm-arm/arch-xxx/irqs.h */
#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 0 x64
#define I8042_STATUS_REG 0 x64
#define I8042_DATA_REG 0 x60
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 */
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