drivers/usb/chipidea/core.c

File Facts

System

Linux kernel

Corpus path

drivers/usb/chipidea/core.c

Extension

.c

Size

35556 bytes

Lines

1509

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/delay.h
• linux/device.h
• linux/dma-mapping.h
• linux/extcon.h
• linux/phy/phy.h
• linux/platform_device.h
• linux/module.h
• linux/idr.h
• linux/interrupt.h
• linux/io.h
• linux/kernel.h
• linux/slab.h
• linux/pm_runtime.h
• linux/pm_domain.h
• linux/pinctrl/consumer.h
• linux/usb/ch9.h
• linux/usb/gadget.h
• linux/usb/otg.h
• linux/usb/chipidea.h
• linux/usb/of.h
• linux/of.h
• linux/regulator/consumer.h
• linux/usb/ehci_def.h
• ci.h
• udc.h
• bits.h
• host.h
• otg.h
• otg_fsm.h

Detected Declarations

• function hw_alloc_regmap
• function ci_get_revision
• function hw_read_intr_enable
• function hw_read_intr_status
• function hw_port_test_set
• function hw_port_test_get
• function hw_wait_phy_stable
• function ci_hdrc_enter_lpm_common
• function ci_hdrc_enter_lpm
• function hw_device_init
• function hw_phymode_configure
• function _ci_usb_phy_init
• function ci_usb_phy_exit
• function ci_usb_phy_init
• function ci_platform_configure
• function hw_controller_reset
• function hw_device_reset
• function ci_irq_handler
• function ci_irq
• function ci_cable_notifier
• function ci_usb_role_switch_get
• function ci_usb_role_switch_set
• function ci_get_role
• function ci_get_platdata
• function ci_extcon_register
• function ci_power_lost_work
• function ci_hdrc_remove_device
• function mode
• function ci_role_destroy
• function ci_get_otg_capable
• function role_show
• function role_store
• function ci_hdrc_probe
• function ci_hdrc_remove
• function ci_otg_fsm_suspend_for_srp
• function ci_otg_fsm_wakeup_by_srp
• function ci_controller_suspend
• function interrupt
• function ci_controller_resume
• function ci_suspend
• function ci_resume
• function ci_runtime_suspend
• function ci_runtime_resume
• function ci_hdrc_platform_register
• function ci_hdrc_platform_unregister
• module init ci_hdrc_platform_register
• export hw_phymode_configure
• export ci_hdrc_add_device

Annotated Snippet

module_init(ci_hdrc_platform_register);

static void __exit ci_hdrc_platform_unregister(void)
{
	platform_driver_unregister(&ci_hdrc_driver);
}
module_exit(ci_hdrc_platform_unregister);

MODULE_ALIAS("platform:ci_hdrc");
MODULE_LICENSE("GPL v2");
MODULE_AUTHOR("David Lopo <dlopo@chipidea.mips.com>");
MODULE_DESCRIPTION("ChipIdea HDRC Driver");

Annotation

• Immediate include surface: `linux/delay.h`, `linux/device.h`, `linux/dma-mapping.h`, `linux/extcon.h`, `linux/phy/phy.h`, `linux/platform_device.h`, `linux/module.h`, `linux/idr.h`.
• Detected declarations: `function hw_alloc_regmap`, `function ci_get_revision`, `function hw_read_intr_enable`, `function hw_read_intr_status`, `function hw_port_test_set`, `function hw_port_test_get`, `function hw_wait_phy_stable`, `function ci_hdrc_enter_lpm_common`, `function ci_hdrc_enter_lpm`, `function hw_device_init`.
• 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.