drivers/usb/renesas_usbhs/mod.c

File Facts

System

Linux kernel

Corpus path

drivers/usb/renesas_usbhs/mod.c

Extension

.c

Size

8319 bytes

Lines

376

Domain

Driver Families

Bucket

drivers/usb

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.
• Touches IRQ or DMA behavior; this matters for the representative real-device path.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/interrupt.h
• common.h
• mod.h

Detected Declarations

• function Copyright
• function usbhsm_autonomy_irq_vbus
• function usbhs_mod_autonomy_mode
• function usbhs_mod_non_autonomy_mode
• function usbhs_mod_register
• function usbhs_mod_is_host
• function usbhs_mod_change
• function usbhs_mod_probe
• function usbhs_mod_remove
• function usbhs_status_get_device_state
• function usbhs_status_get_ctrl_stage
• function usbhs_status_get_each_irq
• function usbhs_interrupt
• function usbhs_irq_callback_update

Annotated Snippet

if (mod->irq_empty && mod->irq_bempsts) {
			usbhs_write(priv, BEMPENB, mod->irq_bempsts);
			intenb0 |= BEMPE;
		}

		if (mod->irq_ready && mod->irq_brdysts) {
			usbhs_write(priv, BRDYENB, mod->irq_brdysts);
			intenb0 |= BRDYE;
		}

		if (usbhs_mod_is_host(priv)) {
			/*
			 * INTSTS1
			 */
			if (mod->irq_attch)
				intenb1 |= ATTCHE;

			if (mod->irq_dtch)
				intenb1 |= DTCHE;

			if (mod->irq_sign)
				intenb1 |= SIGNE;

			if (mod->irq_sack)
				intenb1 |= SACKE;
		}
	}

	if (intenb0)
		usbhs_write(priv, INTENB0, intenb0);

	if (usbhs_mod_is_host(priv) && intenb1)
		usbhs_write(priv, INTENB1, intenb1);
}

Annotation

• Immediate include surface: `linux/interrupt.h`, `common.h`, `mod.h`.
• Detected declarations: `function Copyright`, `function usbhsm_autonomy_irq_vbus`, `function usbhs_mod_autonomy_mode`, `function usbhs_mod_non_autonomy_mode`, `function usbhs_mod_register`, `function usbhs_mod_is_host`, `function usbhs_mod_change`, `function usbhs_mod_probe`, `function usbhs_mod_remove`, `function usbhs_status_get_device_state`.
• Atlas domain: Driver Families / drivers/usb.
• Implementation status: source 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.