drivers/video/fbdev/via/viamode.h

File Facts

System

Linux kernel

Corpus path

drivers/video/fbdev/via/viamode.h

Extension

.h

Size

1298 bytes

Lines

50

Domain

Driver Families

Bucket

drivers/video

Inferred role

Driver Families: implementation source

Status

source 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 or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• global.h

Detected Declarations

• struct VPITTable
• struct patch_table

Annotated Snippet

struct VPITTable {
	unsigned char Misc;
	unsigned char SR[StdSR];
	unsigned char GR[StdGR];
	unsigned char AR[StdAR];
};

struct patch_table {
	int table_length;
	struct io_reg *io_reg_table;
};

extern int NUM_TOTAL_CN400_ModeXregs;
extern int NUM_TOTAL_CN700_ModeXregs;
extern int NUM_TOTAL_KM400_ModeXregs;
extern int NUM_TOTAL_CX700_ModeXregs;
extern int NUM_TOTAL_VX855_ModeXregs;
extern int NUM_TOTAL_CLE266_ModeXregs;
extern int NUM_TOTAL_PATCH_MODE;

extern struct io_reg CN400_ModeXregs[];
extern struct io_reg CN700_ModeXregs[];
extern struct io_reg KM400_ModeXregs[];
extern struct io_reg CX700_ModeXregs[];
extern struct io_reg VX800_ModeXregs[];
extern struct io_reg VX855_ModeXregs[];
extern struct io_reg CLE266_ModeXregs[];
extern struct io_reg PM1024x768[];
extern struct patch_table res_patch_table[];
extern struct VPITTable VPIT;

const struct fb_videomode *viafb_get_best_mode(int hres, int vres,
	int refresh);
const struct fb_videomode *viafb_get_best_rb_mode(int hres, int vres,
	int refresh);

#endif /* __VIAMODE_H__ */

Annotation

• Immediate include surface: `global.h`.
• Detected declarations: `struct VPITTable`, `struct patch_table`.
• Atlas domain: Driver Families / drivers/video.
• Implementation status: source 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.