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Kumar Gala committed Feb 13, 2007
2 parents 8ce0a7d + 17e0e27 commit 54c66f6
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10 changes: 10 additions & 0 deletions CREDITS
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Expand Up @@ -2571,6 +2571,16 @@ S: Subiaco, 6008
S: Perth, Western Australia
S: Australia

N: Miguel Ojeda Sandonis
E: maxextreme@gmail.com
D: Author: Auxiliary LCD Controller driver (ks0108)
D: Author: Auxiliary LCD driver (cfag12864b)
D: Author: Auxiliary LCD framebuffer driver (cfag12864bfb)
D: Maintainer: Auxiliary display drivers tree (drivers/auxdisplay/*)
S: C/ Mieses 20, 9-B
S: Valladolid 47009
S: Spain

N: Greg Page
E: gpage@sovereign.org
D: IPX development and support
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5 changes: 2 additions & 3 deletions Documentation/ABI/testing/debugfs-pktcdvd
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@@ -1,6 +1,6 @@
What: /debug/pktcdvd/pktcdvd[0-7]
Date: Oct. 2006
KernelVersion: 2.6.19
KernelVersion: 2.6.20
Contact: Thomas Maier <balagi@justmail.de>
Description:

Expand All @@ -11,8 +11,7 @@ The pktcdvd module (packet writing driver) creates
these files in debugfs:

/debug/pktcdvd/pktcdvd[0-7]/
info (0444) Lots of human readable driver
statistics and infos. Multiple lines!
info (0444) Lots of driver statistics and infos.

Example:
-------
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2 changes: 1 addition & 1 deletion Documentation/ABI/testing/sysfs-class-pktcdvd
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@@ -1,6 +1,6 @@
What: /sys/class/pktcdvd/
Date: Oct. 2006
KernelVersion: 2.6.19
KernelVersion: 2.6.20
Contact: Thomas Maier <balagi@justmail.de>
Description:

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4 changes: 2 additions & 2 deletions Documentation/DocBook/gadget.tmpl
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Expand Up @@ -482,13 +482,13 @@ slightly.
<para>Gadget drivers
rely on common USB structures and constants
defined in the
<filename>&lt;linux/usb_ch9.h&gt;</filename>
<filename>&lt;linux/usb/ch9.h&gt;</filename>
header file, which is standard in Linux 2.6 kernels.
These are the same types and constants used by host
side drivers (and usbcore).
</para>

!Iinclude/linux/usb_ch9.h
!Iinclude/linux/usb/ch9.h
</sect1>

<sect1 id="core"><title>Core Objects and Methods</title>
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3 changes: 3 additions & 0 deletions Documentation/DocBook/kernel-api.tmpl
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Expand Up @@ -316,6 +316,9 @@ X!Earch/i386/kernel/mca.c
<sect1><title>DMI Interfaces</title>
!Edrivers/firmware/dmi_scan.c
</sect1>
<sect1><title>EDD Interfaces</title>
!Idrivers/firmware/edd.c
</sect1>
</chapter>

<chapter id="security">
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1 change: 1 addition & 0 deletions Documentation/DocBook/stylesheet.xsl
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Expand Up @@ -4,4 +4,5 @@
<param name="funcsynopsis.style">ansi</param>
<param name="funcsynopsis.tabular.threshold">80</param>
<!-- <param name="paper.type">A4</param> -->
<param name="generate.section.toc.level">2</param>
</stylesheet>
6 changes: 3 additions & 3 deletions Documentation/DocBook/usb.tmpl
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Expand Up @@ -187,13 +187,13 @@

<chapter><title>USB-Standard Types</title>

<para>In <filename>&lt;linux/usb_ch9.h&gt;</filename> you will find
<para>In <filename>&lt;linux/usb/ch9.h&gt;</filename> you will find
the USB data types defined in chapter 9 of the USB specification.
These data types are used throughout USB, and in APIs including
this host side API, gadget APIs, and usbfs.
</para>

!Iinclude/linux/usb_ch9.h
!Iinclude/linux/usb/ch9.h

</chapter>

Expand Down Expand Up @@ -574,7 +574,7 @@ for (;;) {
#include &lt;asm/byteorder.h&gt;</programlisting>
The standard USB device model requests, from "Chapter 9" of
the USB 2.0 specification, are automatically included from
the <filename>&lt;linux/usb_ch9.h&gt;</filename> header.
the <filename>&lt;linux/usb/ch9.h&gt;</filename> header.
</para>

<para>Unless noted otherwise, the ioctl requests
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105 changes: 105 additions & 0 deletions Documentation/auxdisplay/cfag12864b
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@@ -0,0 +1,105 @@
===================================
cfag12864b LCD Driver Documentation
===================================

License: GPLv2
Author & Maintainer: Miguel Ojeda Sandonis <maxextreme@gmail.com>
Date: 2006-10-27



--------
0. INDEX
--------

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


---------------------
1. DRIVER INFORMATION
---------------------

This driver support one cfag12864b display at time.


---------------------
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
Select (17)------------------------------(16) Data / Instruction
Ground (18)---[GND] [+5v]---(19) LED +
Ground (19)---[GND]
Ground (20)---[GND] E A Values:
Ground (21)---[GND] [GND]---[P1]---(18) Vee � R = Resistor = 22 ohm
Ground (22)---[GND] | � P1 = Preset = 10 Kohm
Ground (23)---[GND] ---- S ------( 3) V0 � P2 = Preset = 1 Kohm
Ground (24)---[GND] | |
Ground (25)---[GND] [GND]---[P2]---[R]---(20) LED -


------------------------
4. USERSPACE PROGRAMMING
------------------------

The cfag12864bfb describes a framebuffer device (/dev/fbX).

It has a size of 1024 bytes = 1 Kbyte.
Each bit represents one pixel. If the bit is high, the pixel will
turn on. If the pixel is low, the pixel will turn off.

You can use the framebuffer as a file: fopen, fwrite, fclose...
Although the LCD won't get updated until the next refresh time arrives.

Also, you can mmap the framebuffer: open & mmap, munmap & close...
which is the best option for most uses.

Check Documentation/auxdisplay/cfag12864b-example.c
for a real working userspace complete program with usage examples.
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