forked from Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
89 lines
1.7 KiB
89 lines
1.7 KiB
/* 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. |
|
*/ |
|
|
|
#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_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 */
|
|
|