Documentation/admin-guide/auxdisplay/cfag12864b.rst

Source file repositories/reference/linux-study-clean/Documentation/admin-guide/auxdisplay/cfag12864b.rst

File Facts

System: Linux kernel
Corpus path: Documentation/admin-guide/auxdisplay/cfag12864b.rst
Extension: .rst
Size: 3147 bytes
Lines: 99
Domain: Support Tooling And Documentation
Bucket: Documentation
Inferred role: Support Tooling And Documentation: documentation
Status: atlas-only

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

Dependency Surface

No C-style include directives detected by the generator.

Detected Declarations

No top-level syscall, struct, function, initcall, or export declaration detected by the generator.

Annotated Snippet

===================================
cfag12864b LCD Driver Documentation
===================================

:License:		GPLv2
:Author & Maintainer:	Miguel Ojeda <ojeda@kernel.org>
:Date:			2006-10-27



.. INDEX

	1. DRIVER INFORMATION
	2. DEVICE INFORMATION
	3. WIRING
	4. USERSPACE PROGRAMMING

1. Driver Information
---------------------

This driver supports a cfag12864b LCD.


2. Device Information
---------------------

:Manufacturer:	Crystalfontz
:Device Name:	Crystalfontz 12864b LCD Series
:Device Code:	cfag12864b
:Webpage:	http://www.crystalfontz.com
:Device Webpage: http://www.crystalfontz.com/products/12864b/
:Type:		LCD (Liquid Crystal Display)
:Width:		128
:Height:	64
:Colors:	2 (B/N)
:Controller:	ks0108
:Controllers:	2
:Pages:		8 each controller
:Addresses:	64 each page
:Data size:	1 byte each address
:Memory size:	2 * 8 * 64 * 1 = 1024 bytes = 1 Kbyte


3. Wiring
---------

The cfag12864b LCD Series don't have official wiring.

The common wiring is done to the parallel port as shown::

  Parallel Port                          cfag12864b

    Name Pin#                            Pin# Name

  Strobe ( 1)------------------------------(17) Enable
  Data 0 ( 2)------------------------------( 4) Data 0
  Data 1 ( 3)------------------------------( 5) Data 1
  Data 2 ( 4)------------------------------( 6) Data 2
  Data 3 ( 5)------------------------------( 7) Data 3
  Data 4 ( 6)------------------------------( 8) Data 4
  Data 5 ( 7)------------------------------( 9) Data 5
  Data 6 ( 8)------------------------------(10) Data 6
  Data 7 ( 9)------------------------------(11) Data 7
         (10)                      [+5v]---( 1) Vdd
         (11)                      [GND]---( 2) Ground
         (12)                      [+5v]---(14) Reset
         (13)                      [GND]---(15) Read / Write
    Line (14)------------------------------(13) Controller Select 1
         (15)
    Init (16)------------------------------(12) Controller Select 2

Annotation

Atlas domain: Support Tooling And Documentation / Documentation.
Implementation status: atlas-only.

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.