drivers/usb/phy/phy-generic.c

File Facts

System

Linux kernel

Corpus path

drivers/usb/phy/phy-generic.c

Extension

.c

Size

8403 bytes

Lines

349

Domain

Driver Families

Bucket

drivers/usb

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.
• 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/module.h
• linux/platform_device.h
• linux/dma-mapping.h
• linux/usb/gadget.h
• linux/usb/otg.h
• linux/usb/usb_phy_generic.h
• linux/slab.h
• linux/clk.h
• linux/regulator/consumer.h
• linux/property.h
• linux/gpio/consumer.h
• linux/delay.h
• phy-generic.h

Detected Declarations

• function Copyright
• function usb_phy_generic_unregister
• function nop_set_suspend
• function nop_reset
• function nop_set_vbus
• function nop_gpio_vbus_thread
• function usb_gen_phy_init
• function usb_gen_phy_shutdown
• function nop_set_peripheral
• function nop_set_host
• function usb_phy_gen_create_phy
• function usb_phy_generic_probe
• function usb_phy_generic_remove
• function usb_phy_generic_init
• function usb_phy_generic_exit
• module init usb_phy_generic_init
• export usb_phy_generic_register
• export usb_phy_generic_unregister
• export usb_gen_phy_init
• export usb_gen_phy_shutdown
• export usb_phy_gen_create_phy

Annotated Snippet

subsys_initcall(usb_phy_generic_init);

static void __exit usb_phy_generic_exit(void)
{
	platform_driver_unregister(&usb_phy_generic_driver);
}
module_exit(usb_phy_generic_exit);

MODULE_ALIAS("platform:usb_phy_generic");
MODULE_AUTHOR("Texas Instruments Inc");
MODULE_DESCRIPTION("NOP USB Transceiver driver");
MODULE_LICENSE("GPL");

Annotation

• Immediate include surface: `linux/module.h`, `linux/platform_device.h`, `linux/dma-mapping.h`, `linux/usb/gadget.h`, `linux/usb/otg.h`, `linux/usb/usb_phy_generic.h`, `linux/slab.h`, `linux/clk.h`.
• Detected declarations: `function Copyright`, `function usb_phy_generic_unregister`, `function nop_set_suspend`, `function nop_reset`, `function nop_set_vbus`, `function nop_gpio_vbus_thread`, `function usb_gen_phy_init`, `function usb_gen_phy_shutdown`, `function nop_set_peripheral`, `function nop_set_host`.
• Atlas domain: Driver Families / drivers/usb.
• Implementation status: integration implementation candidate.
• Synchronization appears in or near this file; preserve lock ordering, sleepability, and interrupt-context constraints.
• 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.