drivers/media/pci/cx23885/cx23885-core.c

File Facts

System

Linux kernel

Corpus path

drivers/media/pci/cx23885/cx23885-core.c

Extension

.c

Size

64747 bytes

Lines

2322

Domain

Driver Families

Bucket

drivers/media

Inferred role

Driver Families: operation-table or driver-model contract

Status

pattern 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.
• Defines an operation table; this is where Linux turns generic core objects into subsystem-specific behavior.
• 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

• cx23885.h
• linux/init.h
• linux/list.h
• linux/module.h
• linux/moduleparam.h
• linux/kmod.h
• linux/kernel.h
• linux/pci.h
• linux/slab.h
• linux/interrupt.h
• linux/delay.h
• asm/div64.h
• linux/firmware.h
• cimax2.h
• altera-ci.h
• cx23888-ir.h
• cx23885-ir.h
• cx23885-av.h
• cx23885-input.h

Detected Declarations

• function cx23885_irq_add
• function cx23885_irq_add_enable
• function cx23885_irq_enable
• function cx23885_irq_enable_all
• function cx23885_irq_disable
• function cx23885_irq_disable_all
• function cx23885_irq_remove
• function cx23885_irq_get_mask
• function cx23885_risc_decode
• function cx23885_wakeup
• function cx23885_sram_channel_setup
• function cx23885_sram_channel_dump
• function cx23885_risc_disasm
• function cx23885_clear_bridge_error
• function cx23885_shutdown
• function cx23885_reset
• function cx23885_pci_quirks
• function get_resources
• function cx23885_init_tsport
• function cx23885_dev_checkrevision
• function cx23885_dev_setup
• function cx23885_dev_unregister
• function cx23885_risc_buffer
• function cx23885_risc_databuffer
• function cx23885_risc_vbibuffer
• function cx23885_free_buffer
• function cx23885_tsport_reg_dump
• function cx23885_start_dma
• function cx23885_stop_dma
• function cx23885_buf_prepare
• function cx23885_buf_queue
• function do_cancel_buffers
• function cx23885_cancel_buffers
• function cx23885_irq_417
• function cx23885_irq_ts
• function cx23885_irq
• function cx23885_v4l2_dev_notify
• function cx23885_v4l2_dev_notify_init
• function encoder_on_portb
• function encoder_on_portc
• function configuration
• function cx23885_gpio_clear
• function cx23885_gpio_get
• function cx23885_gpio_enable
• function cx23885_does_need_dma_reset
• function cx23885_initdev
• function cx23885_finidev
• function cx23885_suspend

Annotated Snippet

static struct pci_driver cx23885_pci_driver = {
	.name      = "cx23885",
	.id_table  = cx23885_pci_tbl,
	.probe     = cx23885_initdev,
	.remove    = cx23885_finidev,
	.driver.pm = &cx23885_pm_ops,
};

static int __init cx23885_init(void)
{
	pr_info("cx23885 driver version %s loaded\n",
		CX23885_VERSION);
	return pci_register_driver(&cx23885_pci_driver);
}

static void __exit cx23885_fini(void)
{
	pci_unregister_driver(&cx23885_pci_driver);
}

module_init(cx23885_init);
module_exit(cx23885_fini);

Annotation

• Immediate include surface: `cx23885.h`, `linux/init.h`, `linux/list.h`, `linux/module.h`, `linux/moduleparam.h`, `linux/kmod.h`, `linux/kernel.h`, `linux/pci.h`.
• Detected declarations: `function cx23885_irq_add`, `function cx23885_irq_add_enable`, `function cx23885_irq_enable`, `function cx23885_irq_enable_all`, `function cx23885_irq_disable`, `function cx23885_irq_disable_all`, `function cx23885_irq_remove`, `function cx23885_irq_get_mask`, `function cx23885_risc_decode`, `function cx23885_wakeup`.
• Atlas domain: Driver Families / drivers/media.
• Implementation status: pattern 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.