drivers/input/serio/i8042-ip22io.h

Source file repositories/reference/linux-study-clean/drivers/input/serio/i8042-ip22io.h

File Facts

System
Linux kernel
Corpus path
drivers/input/serio/i8042-ip22io.h
Extension
.h
Size
1327 bytes
Lines
73
Domain
Driver Families
Bucket
drivers/input
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

#ifndef _I8042_IP22_H
#define _I8042_IP22_H

#include <asm/sgi/ioc.h>
#include <asm/sgi/ip22.h>


/*
 * Names.
 */

#define I8042_KBD_PHYS_DESC "hpc3ps2/serio0"
#define I8042_AUX_PHYS_DESC "hpc3ps2/serio1"
#define I8042_MUX_PHYS_DESC "hpc3ps2/serio%d"

/*
 * IRQs.
 */

#define I8042_KBD_IRQ SGI_KEYBD_IRQ
#define I8042_AUX_IRQ SGI_KEYBD_IRQ

/*
 * Register numbers.
 */

#define I8042_COMMAND_REG	((unsigned long)&sgioc->kbdmouse.command)
#define I8042_STATUS_REG	((unsigned long)&sgioc->kbdmouse.command)
#define I8042_DATA_REG		((unsigned long)&sgioc->kbdmouse.data)

static inline int i8042_read_data(void)
{
	return sgioc->kbdmouse.data;
}

static inline int i8042_read_status(void)
{
	return sgioc->kbdmouse.command;
}

static inline void i8042_write_data(int val)
{
	sgioc->kbdmouse.data = val;
}

static inline void i8042_write_command(int val)
{
	sgioc->kbdmouse.command = val;
}

static inline int i8042_platform_init(void)
{
#if 0
	/* XXX sgi_kh is a virtual address */
	if (!request_mem_region(sgi_kh, sizeof(struct hpc_keyb), "i8042"))
		return -EBUSY;
#endif

	i8042_reset = I8042_RESET_ALWAYS;

	return 0;
}

static inline void i8042_platform_exit(void)
{
#if 0
	release_mem_region(JAZZ_KEYBOARD_ADDRESS, sizeof(struct hpc_keyb));
#endif
}

#endif /* _I8042_IP22_H */

Annotation

Implementation Notes