Skip to content

Commit

Permalink
---
Browse files Browse the repository at this point in the history
yaml
---
r: 28279
b: refs/heads/master
c: 789e7dc
h: refs/heads/master
i:
  28277: 11af165
  28275: 6f62020
  28271: 3654848
v: v3
  • Loading branch information
Linus Torvalds committed Jun 21, 2006
1 parent 1c1e973 commit 429a2d3
Show file tree
Hide file tree
Showing 2,133 changed files with 84,706 additions and 77,046 deletions.
2 changes: 1 addition & 1 deletion [refs]
Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: 9c64f9774805ba5d5ad4129899bdd822f61874e9
refs/heads/master: 789e7dc8ee6cfb7928208b077d0799d81196e9bb
61 changes: 61 additions & 0 deletions trunk/Documentation/arm/Sharp-LH/ADC-LH7-Touchscreen
Original file line number Diff line number Diff line change
@@ -0,0 +1,61 @@
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
Original file line number Diff line number Diff line change
@@ -0,0 +1,59 @@
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.
13 changes: 2 additions & 11 deletions trunk/Documentation/feature-removal-schedule.txt
Original file line number Diff line number Diff line change
Expand Up @@ -49,11 +49,11 @@ Who: Paul E. McKenney <paulmck@us.ibm.com>
---------------------------

What: raw1394: requests of type RAW1394_REQ_ISO_SEND, RAW1394_REQ_ISO_LISTEN
When: November 2005
When: November 2006
Why: Deprecated in favour of the new ioctl-based rawiso interface, which is
more efficient. You should really be using libraw1394 for raw1394
access anyway.
Who: Jody McIntyre <scjody@steamballoon.com>
Who: Jody McIntyre <scjody@modernduck.com>

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

Expand Down 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
Expand Down
130 changes: 124 additions & 6 deletions trunk/Documentation/filesystems/inotify.txt
Original file line number Diff line number Diff line change
Expand Up @@ -69,17 +69,135 @@ Prototypes:
int inotify_rm_watch (int fd, __u32 mask);


(iii) Internal Kernel Implementation
(iii) Kernel Interface

Each inotify instance is associated with an inotify_device structure.
Inotify's kernel API consists a set of functions for managing watches and an
event callback.

To use the kernel API, you must first initialize an inotify instance with a set
of inotify_operations. You are given an opaque inotify_handle, which you use
for any further calls to inotify.

struct inotify_handle *ih = inotify_init(my_event_handler);

You must provide a function for processing events and a function for destroying
the inotify watch.

void handle_event(struct inotify_watch *watch, u32 wd, u32 mask,
u32 cookie, const char *name, struct inode *inode)

watch - the pointer to the inotify_watch that triggered this call
wd - the watch descriptor
mask - describes the event that occurred
cookie - an identifier for synchronizing events
name - the dentry name for affected files in a directory-based event
inode - the affected inode in a directory-based event

void destroy_watch(struct inotify_watch *watch)

You may add watches by providing a pre-allocated and initialized inotify_watch
structure and specifying the inode to watch along with an inotify event mask.
You must pin the inode during the call. You will likely wish to embed the
inotify_watch structure in a structure of your own which contains other
information about the watch. Once you add an inotify watch, it is immediately
subject to removal depending on filesystem events. You must grab a reference if
you depend on the watch hanging around after the call.

inotify_init_watch(&my_watch->iwatch);
inotify_get_watch(&my_watch->iwatch); // optional
s32 wd = inotify_add_watch(ih, &my_watch->iwatch, inode, mask);
inotify_put_watch(&my_watch->iwatch); // optional

You may use the watch descriptor (wd) or the address of the inotify_watch for
other inotify operations. You must not directly read or manipulate data in the
inotify_watch. Additionally, you must not call inotify_add_watch() more than
once for a given inotify_watch structure, unless you have first called either
inotify_rm_watch() or inotify_rm_wd().

To determine if you have already registered a watch for a given inode, you may
call inotify_find_watch(), which gives you both the wd and the watch pointer for
the inotify_watch, or an error if the watch does not exist.

wd = inotify_find_watch(ih, inode, &watchp);

You may use container_of() on the watch pointer to access your own data
associated with a given watch. When an existing watch is found,
inotify_find_watch() bumps the refcount before releasing its locks. You must
put that reference with:

put_inotify_watch(watchp);

Call inotify_find_update_watch() to update the event mask for an existing watch.
inotify_find_update_watch() returns the wd of the updated watch, or an error if
the watch does not exist.

wd = inotify_find_update_watch(ih, inode, mask);

An existing watch may be removed by calling either inotify_rm_watch() or
inotify_rm_wd().

int ret = inotify_rm_watch(ih, &my_watch->iwatch);
int ret = inotify_rm_wd(ih, wd);

A watch may be removed while executing your event handler with the following:

inotify_remove_watch_locked(ih, iwatch);

Call inotify_destroy() to remove all watches from your inotify instance and
release it. If there are no outstanding references, inotify_destroy() will call
your destroy_watch op for each watch.

inotify_destroy(ih);

When inotify removes a watch, it sends an IN_IGNORED event to your callback.
You may use this event as an indication to free the watch memory. Note that
inotify may remove a watch due to filesystem events, as well as by your request.
If you use IN_ONESHOT, inotify will remove the watch after the first event, at
which point you may call the final inotify_put_watch.

(iv) Kernel Interface Prototypes

struct inotify_handle *inotify_init(struct inotify_operations *ops);

inotify_init_watch(struct inotify_watch *watch);

s32 inotify_add_watch(struct inotify_handle *ih,
struct inotify_watch *watch,
struct inode *inode, u32 mask);

s32 inotify_find_watch(struct inotify_handle *ih, struct inode *inode,
struct inotify_watch **watchp);

s32 inotify_find_update_watch(struct inotify_handle *ih,
struct inode *inode, u32 mask);

int inotify_rm_wd(struct inotify_handle *ih, u32 wd);

int inotify_rm_watch(struct inotify_handle *ih,
struct inotify_watch *watch);

void inotify_remove_watch_locked(struct inotify_handle *ih,
struct inotify_watch *watch);

void inotify_destroy(struct inotify_handle *ih);

void get_inotify_watch(struct inotify_watch *watch);
void put_inotify_watch(struct inotify_watch *watch);


(v) Internal Kernel Implementation

Each inotify instance is represented by an inotify_handle structure.
Inotify's userspace consumers also have an inotify_device which is
associated with the inotify_handle, and on which events are queued.

Each watch is associated with an inotify_watch structure. Watches are chained
off of each associated device and each associated inode.
off of each associated inotify_handle and each associated inode.

See fs/inotify.c for the locking and lifetime rules.
See fs/inotify.c and fs/inotify_user.c for the locking and lifetime rules.


(iv) Rationale
(vi) Rationale

Q: What is the design decision behind not tying the watch to the open fd of
the watched object?
Expand Down Expand Up @@ -145,7 +263,7 @@ A: The poor user-space interface is the second biggest problem with dnotify.
file descriptor-based one that allows basic file I/O and poll/select.
Obtaining the fd and managing the watches could have been done either via a
device file or a family of new system calls. We decided to implement a
family of system calls because that is the preffered approach for new kernel
family of system calls because that is the preferred approach for new kernel
interfaces. The only real difference was whether we wanted to use open(2)
and ioctl(2) or a couple of new system calls. System calls beat ioctls.

12 changes: 8 additions & 4 deletions trunk/Documentation/infiniband/ipoib.txt
Original file line number Diff line number Diff line change
@@ -1,10 +1,10 @@
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
Original file line number Diff line number Diff line change
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]
Expand Down
10 changes: 5 additions & 5 deletions trunk/Documentation/networking/README.ipw2200
Original file line number Diff line number Diff line change
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
Loading

0 comments on commit 429a2d3

Please sign in to comment.