drivers/video/fbdev/carminefb.c

File Facts

System

Linux kernel

Corpus path

drivers/video/fbdev/carminefb.c

Extension

.c

Size

22674 bytes

Lines

794

Domain

Driver Families

Bucket

drivers/video

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.
• 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/aperture.h
• linux/delay.h
• linux/errno.h
• linux/fb.h
• linux/interrupt.h
• linux/pci.h
• linux/slab.h
• linux/module.h
• carminefb.h
• carminefb_regs.h

Detected Declarations

• struct carmine_hw
• struct carmine_resolution
• struct carmine_fb
• function carmine_find_mode
• function c_set_disp_reg
• function c_get_disp_reg
• function c_set_hw_reg
• function c_get_hw_reg
• function carmine_setcolreg
• function carmine_check_var
• function carmine_init_display_param
• function set_display_parameters
• function carmine_set_par
• function init_hardware
• function alloc_carmine_fb
• function cleanup_fb_device
• function carminefb_probe
• function carminefb_remove
• function carminefb_init
• function carminefb_cleanup
• module init carminefb_init

Annotated Snippet

static struct pci_driver carmine_pci_driver = {
	.name		= "carminefb",
	.id_table	= carmine_devices,
	.probe		= carminefb_probe,
	.remove		= carminefb_remove,
};

static int __init carminefb_init(void)
{
	if (fb_modesetting_disabled("carminefb"))
		return -ENODEV;

	if (!(fb_displays &
		(CARMINE_USE_DISPLAY0 | CARMINE_USE_DISPLAY1))) {
		printk(KERN_ERR "If you disable both displays than you don't "
				"need the driver at all\n");
		return -EINVAL;
	}
	return pci_register_driver(&carmine_pci_driver);
}
module_init(carminefb_init);

static void __exit carminefb_cleanup(void)
{
	pci_unregister_driver(&carmine_pci_driver);
}
module_exit(carminefb_cleanup);

MODULE_AUTHOR("Sebastian Siewior <bigeasy@linutronix.de>");
MODULE_DESCRIPTION("Framebuffer driver for Fujitsu Carmine based devices");
MODULE_LICENSE("GPL v2");

Annotation

• Immediate include surface: `linux/aperture.h`, `linux/delay.h`, `linux/errno.h`, `linux/fb.h`, `linux/interrupt.h`, `linux/pci.h`, `linux/slab.h`, `linux/module.h`.
• Detected declarations: `struct carmine_hw`, `struct carmine_resolution`, `struct carmine_fb`, `function carmine_find_mode`, `function c_set_disp_reg`, `function c_get_disp_reg`, `function c_set_hw_reg`, `function c_get_hw_reg`, `function carmine_setcolreg`, `function carmine_check_var`.
• Atlas domain: Driver Families / drivers/video.
• Implementation status: pattern 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.