drivers/rtc/rtc-ds3232.c

File Facts

System

Linux kernel

Corpus path

drivers/rtc/rtc-ds3232.c

Extension

.c

Size

17125 bytes

Lines

746

Domain

Driver Families

Bucket

drivers/rtc

Inferred role

Driver Families: exported/initcall integration point

Status

integration 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.
• Exports symbols or registers init work; inspect boot/module ordering and who consumes the exported contract.
• Touches IRQ or DMA behavior; this matters for the representative real-device path.
• Allocates kernel memory; connect allocation flags and lifetime to context constraints.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/kernel.h
• linux/module.h
• linux/interrupt.h
• linux/i2c.h
• linux/spi/spi.h
• linux/rtc.h
• linux/bcd.h
• linux/slab.h
• linux/regmap.h
• linux/hwmon.h

Detected Declarations

• struct ds3232
• function ds3232_check_rtc_status
• function ds3232_read_time
• function ds3232_set_time
• function ds3232_read_alarm
• function ds3232_set_alarm
• function ds3232_update_alarm
• function ds3232_hwmon_read_temp
• function ds3232_hwmon_is_visible
• function ds3232_hwmon_read
• function ds3232_hwmon_register
• function ds3232_alarm_irq_enable
• function ds3232_irq
• function ds3232_nvmem_read
• function ds3232_nvmem_write
• function ds3232_probe
• function ds3232_suspend
• function ds3232_resume
• function ds3232_i2c_probe
• function ds3232_register_driver
• function ds3232_unregister_driver
• function ds3232_register_driver
• function ds3232_unregister_driver
• function ds3234_register_driver
• function ds3234_unregister_driver
• function ds3234_register_driver
• function ds3234_unregister_driver
• function ds323x_exit
• module init ds323x_init

Annotated Snippet

module_init(ds323x_init)

static void __exit ds323x_exit(void)
{
	ds3234_unregister_driver();
	ds3232_unregister_driver();
}
module_exit(ds323x_exit)

MODULE_AUTHOR("Srikanth Srinivasan <srikanth.srinivasan@freescale.com>");
MODULE_AUTHOR("Dennis Aberilla <denzzzhome@yahoo.com>");
MODULE_DESCRIPTION("Maxim/Dallas DS3232/DS3234 RTC Driver");
MODULE_LICENSE("GPL");
MODULE_ALIAS("spi:ds3234");

Annotation

• Immediate include surface: `linux/kernel.h`, `linux/module.h`, `linux/interrupt.h`, `linux/i2c.h`, `linux/spi/spi.h`, `linux/rtc.h`, `linux/bcd.h`, `linux/slab.h`.
• Detected declarations: `struct ds3232`, `function ds3232_check_rtc_status`, `function ds3232_read_time`, `function ds3232_set_time`, `function ds3232_read_alarm`, `function ds3232_set_alarm`, `function ds3232_update_alarm`, `function ds3232_hwmon_read_temp`, `function ds3232_hwmon_is_visible`, `function ds3232_hwmon_read`.
• Atlas domain: Driver Families / drivers/rtc.
• Implementation status: integration implementation candidate.
• IRQ or DMA behavior appears here, which is relevant to the selected PCIe/NVMe device path.

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.