drivers/video/fbdev/core/fbcon_rotate.h

File Facts

System

Linux kernel

Corpus path

drivers/video/fbdev/core/fbcon_rotate.h

Extension

.h

Size

1248 bytes

Lines

38

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

• No C-style include directives detected by the generator.

Detected Declarations

• function fbcon_set_bitops_cw

Annotated Snippet

#ifndef _FBCON_ROTATE_H
#define _FBCON_ROTATE_H

#define GETVYRES(s,i) ({                           \
        (fb_scrollmode(s) == SCROLL_REDRAW || fb_scrollmode(s) == SCROLL_MOVE) ? \
        (i)->var.yres : (i)->var.yres_virtual; })

#define GETVXRES(s,i) ({                           \
        (fb_scrollmode(s) == SCROLL_REDRAW || fb_scrollmode(s) == SCROLL_MOVE || !(i)->fix.xpanstep) ? \
        (i)->var.xres : (i)->var.xres_virtual; })

int fbcon_rotate_font(struct fb_info *info, struct vc_data *vc);

#if defined(CONFIG_FRAMEBUFFER_CONSOLE_ROTATION)
void fbcon_set_bitops_cw(struct fbcon_par *par);
void fbcon_set_bitops_ud(struct fbcon_par *par);
void fbcon_set_bitops_ccw(struct fbcon_par *par);
#else
static inline void fbcon_set_bitops_cw(struct fbcon_par *par)
{ }
static inline void fbcon_set_bitops_ud(struct fbcon_par *par)
{ }
static inline void fbcon_set_bitops_ccw(struct fbcon_par *par)
{ }
#endif

#endif

Annotation

• Detected declarations: `function fbcon_set_bitops_cw`.
• 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.