drivers/video/fbdev/sm712fb.c

File Facts

System

Linux kernel

Corpus path

drivers/video/fbdev/sm712fb.c

Extension

.c

Size

49131 bytes

Lines

1780

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.
• Touches user memory; correctness depends on fault-safe copying and privilege boundary handling.
• 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/io.h
• linux/fb.h
• linux/pci.h
• linux/init.h
• linux/slab.h
• linux/uaccess.h
• linux/module.h
• linux/console.h
• linux/pm.h
• sm712.h

Detected Declarations

• struct smtcfb_screen_info
• struct smtcfb_info
• struct vesa_mode
• function sm7xx_vga_setup
• function sm712_setpalette
• function chan_to_field
• function smtc_blank
• function smtc_setcolreg
• function smtcfb_read
• function smtcfb_write
• function sm7xx_set_timing
• function smtc_set_timing
• function smtcfb_setmode
• function smtc_check_var
• function smtc_set_par
• function smtc_unmap_mmio
• function smtc_map_smem
• function smtc_unmap_smem
• function sm7xx_init_hw
• function sm7xx_vram_probe
• function sm7xx_resolution_probe
• function smtcfb_pci_probe
• function smtcfb_pci_remove
• function smtcfb_pci_suspend
• function smtcfb_pci_resume
• function sm712fb_init
• function sm712fb_exit
• module init sm712fb_init

Annotated Snippet

static struct pci_driver smtcfb_driver = {
	.name = "smtcfb",
	.id_table = smtcfb_pci_table,
	.probe = smtcfb_pci_probe,
	.remove = smtcfb_pci_remove,
	.driver.pm  = &sm7xx_pm_ops,
};

static int __init sm712fb_init(void)
{
	char *option = NULL;

	if (fb_modesetting_disabled("sm712fb"))
		return -ENODEV;

	if (fb_get_options("sm712fb", &option))
		return -ENODEV;
	if (option && *option)
		mode_option = option;
	sm7xx_vga_setup(mode_option);

	return pci_register_driver(&smtcfb_driver);
}

module_init(sm712fb_init);

static void __exit sm712fb_exit(void)
{
	pci_unregister_driver(&smtcfb_driver);
}

module_exit(sm712fb_exit);

MODULE_AUTHOR("Siliconmotion ");
MODULE_DESCRIPTION("Framebuffer driver for SMI Graphic Cards");
MODULE_LICENSE("GPL");

Annotation

• Immediate include surface: `linux/aperture.h`, `linux/io.h`, `linux/fb.h`, `linux/pci.h`, `linux/init.h`, `linux/slab.h`, `linux/uaccess.h`, `linux/module.h`.
• Detected declarations: `struct smtcfb_screen_info`, `struct smtcfb_info`, `struct vesa_mode`, `function sm7xx_vga_setup`, `function sm712_setpalette`, `function chan_to_field`, `function smtc_blank`, `function smtc_setcolreg`, `function smtcfb_read`, `function smtcfb_write`.
• Atlas domain: Driver Families / drivers/video.
• Implementation status: pattern implementation candidate.
• This snippet crosses the user/kernel memory boundary; validate fault handling and access checks before translating the pattern.

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.