linux-stable.git/include/linux/serio.h, branch v3.2.102

Input: i8042 - break load dependency between atkbd/psmouse and i8042

2016-11-20T01:01:28+00:00

commit 4097461897df91041382ff6fcd2bfa7ee6b2448c upstream.

As explained in 1407814240-4275-1-git-send-email-decui@microsoft.com we
have a hard load dependency between i8042 and atkbd which prevents
keyboard from working on Gen2 Hyper-V VMs.

> hyperv_keyboard invokes serio_interrupt(), which needs a valid serio
> driver like atkbd.c.  atkbd.c depends on libps2.c because it invokes
> ps2_command().  libps2.c depends on i8042.c because it invokes
> i8042_check_port_owner().  As a result, hyperv_keyboard actually
> depends on i8042.c.
>
> For a Generation 2 Hyper-V VM (meaning no i8042 device emulated), if a
> Linux VM (like Arch Linux) happens to configure CONFIG_SERIO_I8042=m
> rather than =y, atkbd.ko can't load because i8042.ko can't load(due to
> no i8042 device emulated) and finally hyperv_keyboard can't work and
> the user can't input: https://bugs.archlinux.org/task/39820
> (Ubuntu/RHEL/SUSE aren't affected since they use CONFIG_SERIO_I8042=y)

To break the dependency we move away from using i8042_check_port_owner()
and instead allow serio port owner specify a mutex that clients should use
to serialize PS/2 command stream.

Reported-by: Mark Laws 
Tested-by: Mark Laws 
Signed-off-by: Dmitry Torokhov 
Signed-off-by: Ben Hutchings

include: convert various register fcns to macros to avoid include chaining

2011-10-31T23:32:32+00:00

The original implementations reference THIS_MODULE in an inline.
We could include , but it is better to avoid chaining.

Fortunately someone else already thought of this, and made a similar
inline into a #define in  for device_schedule_callback(),
[see commit 523ded71de0] so follow that precedent here.

Also bubble up any __must_check that were used on the prev. wrapper inline
functions up one to the real __register functions, to preserve any prev.
sanity checks that were used in those instances.

Signed-off-by: Paul Gortmaker

Input: add a driver for TSC-40 serial touchscreen

2011-09-28T17:24:14+00:00

This patch adds the TSC-40 serial touchscreen driver and should be
compatible with TSC-10 and TSC-25.

The driver was written by Linutronix on behalf of Bachmann electronic GmbH.

Signed-off-by: Sebastian Andrzej Siewior 
Signed-off-by: Christian Gmeiner 
Signed-off-by: Dmitry Torokhov

Input: serio - add support for PS2Mult multiplexer protocol

2010-10-18T16:33:31+00:00

PS2Mult is a simple serial protocol used for multiplexing several PS/2
streams into one serial data stream. It's used e.g. on TQM85xx series
of boards.

Signed-off-by: Dmitry Eremin-Solenikov 
Signed-off-by: Dmitry Torokhov

Input: serio - support multiple child devices per single parent

2010-10-13T14:49:28+00:00

Some (rare) serio devices need to have multiple serio children. One of
the examples is PS/2 multiplexer present on several TQC STKxxx boards,
which connect PS/2 keyboard and mouse to single tty port.

Signed-off-by: Dmitry Eremin-Solenikov 
Signed-off-by: Dmitry Torokhov

Input: serio_driver - drop private pointer

2010-09-14T07:23:48+00:00

Nobody uses it anymore.

Signed-off-by: Dmitry Torokhov

Input: serio_driver - mark id_table and description as const

2010-09-14T07:22:56+00:00

Memory pointed to by these fields is not supposed to change.

Signed-off-by: Dmitry Torokhov

Input: add driver for hampshire serial touchscreens

2010-04-14T06:27:41+00:00

Adds support for Hampshire TSHARC serial touchscreens.  Implements
Hampshire's 4-byte communication protocol.

Signed-off-by: Adam Bennett 
Signed-off-by: Dmitry Torokhov

Merge commit 'v2.6.33-rc5' into next

2010-01-22T07:55:25+00:00

Input: serio - let device core tell us if device was registered

2010-01-06T08:22:00+00:00

No need to keep track of it by ourselves.

Signed-off-by: Dmitry Torokhov