drivers/mmc/host/sdhci-of-aspeed.c

File Facts

System

Linux kernel

Corpus path

drivers/mmc/host/sdhci-of-aspeed.c

Extension

.c

Size

16029 bytes

Lines

632

Domain

Driver Families

Bucket

drivers/mmc

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.
• Uses kernel synchronization; read lock ordering, sleepability, and interrupt context assumptions before translating.
• 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/clk.h
• linux/delay.h
• linux/device.h
• linux/io.h
• linux/math64.h
• linux/mmc/host.h
• linux/module.h
• linux/of_address.h
• linux/of.h
• linux/of_platform.h
• linux/platform_device.h
• linux/reset.h
• linux/spinlock.h
• sdhci-pltfm.h
• sdhci-of-aspeed-test.c

Detected Declarations

• struct aspeed_sdc
• struct aspeed_sdhci_tap_param
• struct aspeed_sdhci_tap_desc
• struct aspeed_sdhci_phase_desc
• struct aspeed_sdhci_pdata
• struct aspeed_sdhci
• function aspeed_sdc_set_slot_capability
• function aspeed_sdc_configure_8bit_mode
• function aspeed_sdc_set_phase_tap
• function aspeed_sdc_set_phase_taps
• function aspeed_sdhci_phase_to_tap
• function aspeed_sdhci_phases_to_taps
• function aspeed_sdhci_configure_phase
• function aspeed_sdhci_set_clock
• function aspeed_sdhci_get_max_clock
• function aspeed_sdhci_set_bus_width
• function aspeed_sdhci_readl
• function aspeed_sdhci_calculate_slot
• function aspeed_sdhci_probe
• function aspeed_sdhci_remove
• function aspeed_sdc_probe
• function aspeed_sdc_remove
• function aspeed_sdc_init
• function aspeed_sdc_exit
• module init aspeed_sdc_init

Annotated Snippet

module_init(aspeed_sdc_init);

static void __exit aspeed_sdc_exit(void)
{
	platform_driver_unregister(&aspeed_sdc_driver);
	platform_driver_unregister(&aspeed_sdhci_driver);
}
module_exit(aspeed_sdc_exit);

MODULE_DESCRIPTION("Driver for the ASPEED SD/SDIO/SDHCI Controllers");
MODULE_AUTHOR("Ryan Chen <ryan_chen@aspeedtech.com>");
MODULE_AUTHOR("Andrew Jeffery <andrew@aj.id.au>");
MODULE_LICENSE("GPL");

Annotation

• Immediate include surface: `linux/clk.h`, `linux/delay.h`, `linux/device.h`, `linux/io.h`, `linux/math64.h`, `linux/mmc/host.h`, `linux/module.h`, `linux/of_address.h`.
• Detected declarations: `struct aspeed_sdc`, `struct aspeed_sdhci_tap_param`, `struct aspeed_sdhci_tap_desc`, `struct aspeed_sdhci_phase_desc`, `struct aspeed_sdhci_pdata`, `struct aspeed_sdhci`, `function aspeed_sdc_set_slot_capability`, `function aspeed_sdc_configure_8bit_mode`, `function aspeed_sdc_set_phase_tap`, `function aspeed_sdc_set_phase_taps`.
• Atlas domain: Driver Families / drivers/mmc.
• Implementation status: integration implementation candidate.
• Synchronization appears in or near this file; preserve lock ordering, sleepability, and interrupt-context constraints.

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.