drivers/input/serio/i8042-snirm.h
Source file repositories/reference/linux-study-clean/drivers/input/serio/i8042-snirm.h
File Facts
- System
- Linux kernel
- Corpus path
drivers/input/serio/i8042-snirm.h- Extension
.h- Size
- 1295 bytes
- Lines
- 72
- 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.
- 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
asm/sni.h
Detected Declarations
function i8042_read_datafunction i8042_read_statusfunction i8042_write_datafunction i8042_write_commandfunction i8042_platform_initfunction i8042_platform_exit
Annotated Snippet
#ifndef _I8042_SNIRM_H
#define _I8042_SNIRM_H
#include <asm/sni.h>
/*
* Names.
*/
#define I8042_KBD_PHYS_DESC "onboard/serio0"
#define I8042_AUX_PHYS_DESC "onboard/serio1"
#define I8042_MUX_PHYS_DESC "onboard/serio%d"
/*
* IRQs.
*/
static int i8042_kbd_irq;
static int i8042_aux_irq;
#define I8042_KBD_IRQ i8042_kbd_irq
#define I8042_AUX_IRQ i8042_aux_irq
static void __iomem *kbd_iobase;
#define I8042_COMMAND_REG (kbd_iobase + 0x64UL)
#define I8042_DATA_REG (kbd_iobase + 0x60UL)
static inline int i8042_read_data(void)
{
return readb(kbd_iobase + 0x60UL);
}
static inline int i8042_read_status(void)
{
return readb(kbd_iobase + 0x64UL);
}
static inline void i8042_write_data(int val)
{
writeb(val, kbd_iobase + 0x60UL);
}
static inline void i8042_write_command(int val)
{
writeb(val, kbd_iobase + 0x64UL);
}
static inline int i8042_platform_init(void)
{
/* RM200 is strange ... */
if (sni_brd_type == SNI_BRD_RM200) {
kbd_iobase = ioremap(0x16000000, 4);
i8042_kbd_irq = 33;
i8042_aux_irq = 44;
} else {
kbd_iobase = ioremap(0x14000000, 4);
i8042_kbd_irq = 1;
i8042_aux_irq = 12;
}
if (!kbd_iobase)
return -ENOMEM;
return 0;
}
static inline void i8042_platform_exit(void)
{
}
#endif /* _I8042_SNIRM_H */
Annotation
- Immediate include surface: `asm/sni.h`.
- Detected declarations: `function i8042_read_data`, `function i8042_read_status`, `function i8042_write_data`, `function i8042_write_command`, `function i8042_platform_init`, `function i8042_platform_exit`.
- Atlas domain: Driver Families / drivers/input.
- Implementation status: source implementation candidate.
Implementation Notes
- This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
- Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
- Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.