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r: 27721
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c: c9ab097
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Linus Torvalds committed Jun 20, 2006
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2 changes: 1 addition & 1 deletion [refs]
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---
refs/heads/master: 12223dabc617a4babfba4e17feb1ed88e8cfeb8f
refs/heads/master: c9ab09710ecb071031b0a04f3f9d7e686c0a75e0
61 changes: 61 additions & 0 deletions trunk/Documentation/arm/Sharp-LH/ADC-LH7-Touchscreen
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README on the ADC/Touchscreen Controller
========================================

The LH79524 and LH7A404 include a built-in Analog to Digital
controller (ADC) that is used to process input from a touchscreen.
The driver only implements a four-wire touch panel protocol.

The touchscreen driver is maintenance free except for the pen-down or
touch threshold. Some resistive displays and board combinations may
require tuning of this threshold. The driver exposes some of it's
internal state in the sys filesystem. If the kernel is configured
with it, CONFIG_SYSFS, and sysfs is mounted at /sys, there will be a
directory

/sys/devices/platform/adc-lh7.0

containing these files.

-r--r--r-- 1 root root 4096 Jan 1 00:00 samples
-rw-r--r-- 1 root root 4096 Jan 1 00:00 threshold
-r--r--r-- 1 root root 4096 Jan 1 00:00 threshold_range

The threshold is the current touch threshold. It defaults to 750 on
most targets.

# cat threshold
750

The threshold_range contains the range of valid values for the
threshold. Values outside of this range will be silently ignored.

# cat threshold_range
0 1023

To change the threshold, write a value to the threshold file.

# echo 500 > threshold
# cat threshold
500

The samples file contains the most recently sampled values from the
ADC. There are 12. Below are typical of the last sampled values when
the pen has been released. The first two and last two samples are for
detecting whether or not the pen is down. The third through sixth are
X coordinate samples. The seventh through tenth are Y coordinate
samples.

# cat samples
1023 1023 0 0 0 0 530 529 530 529 1023 1023

To determine a reasonable threshold, press on the touch panel with an
appropriate stylus and read the values from samples.

# cat samples
1023 676 92 103 101 102 855 919 922 922 1023 679

The first and eleventh samples are discarded. Thus, the important
values are the second and twelfth which are used to determine if the
pen is down. When both are below the threshold, the driver registers
that the pen is down. When either is above the threshold, it
registers then pen is up.
59 changes: 59 additions & 0 deletions trunk/Documentation/arm/Sharp-LH/LCDPanels
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README on the LCD Panels
========================

Configuration options for several LCD panels, available from Logic PD,
are included in the kernel source. This README will help you
understand the configuration data and give you some guidance for
adding support for other panels if you wish.


lcd-panels.h
------------

There is no way, at present, to detect which panel is attached to the
system at runtime. Thus the kernel configuration is static. The file
arch/arm/mach-ld7a40x/lcd-panels.h (or similar) defines all of the
panel specific parameters.

It should be possible for this data to be shared among several device
families. The current layout may be insufficiently general, but it is
amenable to improvement.


PIXEL_CLOCK
-----------

The panel data sheets will give a range of acceptable pixel clocks.
The fundamental LCDCLK input frequency is divided down by a PCD
constant in field '.tim2'. It may happen that it is impossible to set
the pixel clock within this range. A clock which is too slow will
tend to flicker. For the highest quality image, set the clock as high
as possible.


MARGINS
-------

These values may be difficult to glean from the panel data sheet. In
the case of the Sharp panels, the upper margin is explicitly called
out as a specific number of lines from the top of the frame. The
other values may not matter as much as the panels tend to
automatically center the image.


Sync Sense
----------

The sense of the hsync and vsync pulses may be called out in the data
sheet. On one panel, the sense of these pulses determine the height
of the visible region on the panel. Most of the Sharp panels use
negative sense sync pulses set by the TIM2_IHS and TIM2_IVS bits in
'.tim2'.


Pel Layout
----------

The Sharp color TFT panels are all configured for 16 bit direct color
modes. The amba-lcd driver sets the pel mode to 565 for 5 bits of
each red and blue and 6 bits of green.
9 changes: 0 additions & 9 deletions trunk/Documentation/feature-removal-schedule.txt
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Expand Up @@ -212,15 +212,6 @@ Who: Greg Kroah-Hartman <gregkh@suse.de>

---------------------------

What: Support for NEC DDB5074 and DDB5476 evaluation boards.
When: June 2006
Why: Board specific code doesn't build anymore since ~2.6.0 and no
users have complained indicating there is no more need for these
boards. This should really be considered a last call.
Who: Ralf Baechle <ralf@linux-mips.org>

---------------------------

What: USB driver API moves to EXPORT_SYMBOL_GPL
When: Febuary 2008
Files: include/linux/usb.h, drivers/usb/core/driver.c
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12 changes: 8 additions & 4 deletions trunk/Documentation/infiniband/ipoib.txt
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IP OVER INFINIBAND

The ib_ipoib driver is an implementation of the IP over InfiniBand
protocol as specified by the latest Internet-Drafts issued by the
IETF ipoib working group. It is a "native" implementation in the
sense of setting the interface type to ARPHRD_INFINIBAND and the
hardware address length to 20 (earlier proprietary implementations
protocol as specified by RFC 4391 and 4392, issued by the IETF ipoib
working group. It is a "native" implementation in the sense of
setting the interface type to ARPHRD_INFINIBAND and the hardware
address length to 20 (earlier proprietary implementations
masqueraded to the kernel as ethernet interfaces).

Partitions and P_Keys
Expand Down Expand Up @@ -53,3 +53,7 @@ References

IETF IP over InfiniBand (ipoib) Working Group
http://ietf.org/html.charters/ipoib-charter.html
Transmission of IP over InfiniBand (IPoIB) (RFC 4391)
http://ietf.org/rfc/rfc4391.txt
IP over InfiniBand (IPoIB) Architecture (RFC 4392)
http://ietf.org/rfc/rfc4392.txt
9 changes: 9 additions & 0 deletions trunk/Documentation/kernel-parameters.txt
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Expand Up @@ -1402,6 +1402,15 @@ running once the system is up.
If enabled at boot time, /selinux/disable can be used
later to disable prior to initial policy load.

selinux_compat_net =
[SELINUX] Set initial selinux_compat_net flag value.
Format: { "0" | "1" }
0 -- use new secmark-based packet controls
1 -- use legacy packet controls
Default value is 0 (preferred).
Value can be changed at runtime via
/selinux/compat_net.

serialnumber [BUGS=IA-32]

sg_def_reserved_size= [SCSI]
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10 changes: 5 additions & 5 deletions trunk/Documentation/networking/README.ipw2200
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Expand Up @@ -14,8 +14,8 @@ Copyright (C) 2004-2006, Intel Corporation

README.ipw2200

Version: 1.0.8
Date : October 20, 2005
Version: 1.1.2
Date : March 30, 2006


Index
Expand Down Expand Up @@ -103,7 +103,7 @@ file.

1.1. Overview of Features
-----------------------------------------------
The current release (1.0.8) supports the following features:
The current release (1.1.2) supports the following features:

+ BSS mode (Infrastructure, Managed)
+ IBSS mode (Ad-Hoc)
Expand Down Expand Up @@ -247,8 +247,8 @@ and can set the contents via echo. For example:
% cat /sys/bus/pci/drivers/ipw2200/debug_level

Will report the current debug level of the driver's logging subsystem
(only available if CONFIG_IPW_DEBUG was configured when the driver was
built).
(only available if CONFIG_IPW2200_DEBUG was configured when the driver
was built).

You can set the debug level via:

Expand Down
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