drivers/video/fbdev/fsl-diu-fb.c

File Facts

System

Linux kernel

Corpus path

drivers/video/fbdev/fsl-diu-fb.c

Extension

.c

Size

52625 bytes

Lines

1996

Domain

Driver Families

Bucket

drivers/video

Inferred role

Driver Families: exported/initcall integration point

Status

integration 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.
• Exports symbols or registers init work; inspect boot/module ordering and who consumes the exported contract.
• Touches user memory; correctness depends on fault-safe copying and privilege boundary handling.
• 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

• linux/module.h
• linux/kernel.h
• linux/errno.h
• linux/string.h
• linux/slab.h
• linux/fb.h
• linux/init.h
• linux/dma-mapping.h
• linux/platform_device.h
• linux/interrupt.h
• linux/clk.h
• linux/uaccess.h
• linux/vmalloc.h
• linux/spinlock.h
• linux/of_address.h
• linux/of_irq.h
• sysdev/fsl_soc.h
• linux/fsl-diu-fb.h
• edid.h

Detected Declarations

• struct mfb_info
• struct fsl_diu_data
• enum mfb_index
• function __attribute__
• function port
• function wr_reg_wa
• function fsl_diu_enable_panel
• function fsl_diu_disable_panel
• function enable_lcdc
• function disable_lcdc
• function adjust_aoi_size_position
• function fsl_diu_check_var
• function set_fix
• function update_lcdc
• function map_video_memory
• function unmap_video_memory
• function fsl_diu_set_aoi
• function fsl_diu_get_pixel_format
• function fsl_diu_load_cursor_image
• function fsl_diu_cursor
• function fsl_diu_set_par
• function CNVT_TOHW
• function fsl_diu_setcolreg
• function Pan
• function fsl_diu_ioctl
• function fsl_diu_enable_interrupts
• function fsl_diu_open
• function fsl_diu_release
• function install_fb
• function uninstall_fb
• function fsl_diu_isr
• function fsl_diu_suspend
• function fsl_diu_resume
• function store_monitor
• function show_monitor
• function fsl_diu_probe
• function dma_alloc_coherent
• function fsl_diu_remove
• function fsl_diu_setup
• function fsl_diu_init
• function fsl_diu_exit
• module init fsl_diu_init

Annotated Snippet

module_init(fsl_diu_init);
module_exit(fsl_diu_exit);

MODULE_AUTHOR("York Sun <yorksun@freescale.com>");
MODULE_DESCRIPTION("Freescale DIU framebuffer driver");
MODULE_LICENSE("GPL");

module_param_named(mode, fb_mode, charp, 0);
MODULE_PARM_DESC(mode,
	"Specify resolution as \"<xres>x<yres>[-<bpp>][@<refresh>]\" ");
module_param_named(bpp, default_bpp, ulong, 0);
MODULE_PARM_DESC(bpp, "Specify bit-per-pixel if not specified in 'mode'");
module_param_named(monitor, monitor_string, charp, 0);
MODULE_PARM_DESC(monitor, "Specify the monitor port "
	"(\"dvi\", \"lvds\", or \"dlvds\") if supported by the platform");

Annotation

• Immediate include surface: `linux/module.h`, `linux/kernel.h`, `linux/errno.h`, `linux/string.h`, `linux/slab.h`, `linux/fb.h`, `linux/init.h`, `linux/dma-mapping.h`.
• Detected declarations: `struct mfb_info`, `struct fsl_diu_data`, `enum mfb_index`, `function __attribute__`, `function port`, `function wr_reg_wa`, `function fsl_diu_enable_panel`, `function fsl_diu_disable_panel`, `function enable_lcdc`, `function disable_lcdc`.
• Atlas domain: Driver Families / drivers/video.
• Implementation status: integration implementation candidate.
• This snippet crosses the user/kernel memory boundary; validate fault handling and access checks before translating the pattern.
• 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.