drivers/ufs/host/ufshcd-dwc.c

File Facts

System

Linux kernel

Corpus path

drivers/ufs/host/ufshcd-dwc.c

Extension

.c

Size

4042 bytes

Lines

147

Domain

Driver Families

Bucket

drivers/ufs

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.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/module.h
• ufs/ufshcd.h
• ufs/unipro.h
• ufshcd-dwc.h
• ufshci-dwc.h

Detected Declarations

• function Copyright
• function ufshcd_dwc_program_clk_div
• function ufshcd_dwc_link_is_up
• function ufshcd_dwc_connection_setup
• function ufshcd_dwc_link_startup_notify
• export ufshcd_dwc_dme_set_attrs
• export ufshcd_dwc_link_startup_notify

Annotated Snippet

if (err) {
			dev_err(hba->dev, "Phy setup failed (%d)\n", err);
			goto out;
		}
	} else { /* POST_CHANGE */
		err = ufshcd_dwc_link_is_up(hba);
		if (err) {
			dev_err(hba->dev, "Link is not up\n");
			goto out;
		}

		err = ufshcd_dwc_connection_setup(hba);
		if (err)
			dev_err(hba->dev, "Connection setup failed (%d)\n",
									err);
	}

out:
	return err;
}
EXPORT_SYMBOL(ufshcd_dwc_link_startup_notify);

MODULE_AUTHOR("Joao Pinto <Joao.Pinto@synopsys.com>");
MODULE_DESCRIPTION("UFS Host driver for Synopsys Designware Core");
MODULE_LICENSE("Dual BSD/GPL");

Annotation

• Immediate include surface: `linux/module.h`, `ufs/ufshcd.h`, `ufs/unipro.h`, `ufshcd-dwc.h`, `ufshci-dwc.h`.
• Detected declarations: `function Copyright`, `function ufshcd_dwc_program_clk_div`, `function ufshcd_dwc_link_is_up`, `function ufshcd_dwc_connection_setup`, `function ufshcd_dwc_link_startup_notify`, `export ufshcd_dwc_dme_set_attrs`, `export ufshcd_dwc_link_startup_notify`.
• Atlas domain: Driver Families / drivers/ufs.
• Implementation status: integration 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.