This offers a way for platforms to define flags and thresholds for the
free-fall/wakeup functions of the lis302d chips.

More registers needed to be seperated as they are specific to the
Signed-off-by: NDaniel Mack <daniel@caiaq.de>
Acked-by: NPavel Machek <pavel@ucw.cz>
Cc: Eric Piel <eric.piel@tremplin-utc.net>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

The LIS302DL accelerometer chip has a 'click' feature which can be used to
detect sudden motion on any of the three axis.  Configuration data is
passed via spi platform_data and no action is taken if that's not
specified, so it won't harm any existing platform.

To make the configuration effective, the IRQ lines need to be set up
appropriately.  This patch also adds a way to do that from board support
code.

The DD_* definitions were factored out to an own enum because they are
specific to LIS3LV02D devices.
Signed-off-by: NDaniel Mack <daniel@caiaq.de>
Acked-by: NPavel Machek <pavel@ucw.cz>
Acked-by: NEric Piel <eric.piel@tremplin-utc.net>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Now that there is no need to hookup on the open/close of the joystick,
it's possible to use the simplified interface input_polled_device, instead
of creating our own kthread.

[randy.dunlap@oracle.com: fix Kconfig]
[randy.dunlap@oracle.com: fix Kconfig some more]
Signed-off-by: NEric Piel <eric.piel@tremplin-utc.net>
Signed-off-by: NPavel Machek <pavel@ucw.cz>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

After measurement on my laptop, it seems that turning off the device does
not bring any energy saving (within 0.1W precision).  So let's keep the
device always on.  It simplifies the code, and it avoids the problem of
reading a wrong value sometimes just after turning the device on.

Moreover, since commit ef2cfc79 had been
too zealous, the device was actually never turned off anyway.  This patch
also restores the damages done by this commit concerning the
initialisation/poweroff.

Also do more clean up with the usage of the lis3_dev global variable.
Signed-off-by: NEric Piel <eric.piel@tremplin-utc.net>
Signed-off-by: NPavel Machek <pavel@ucw.cz>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Can only unregister the misc device if it was registered before.  Also
remove debugging messages, which in addition were not properly formated.
Signed-off-by: NEric Piel <eric.piel@tremplin-utc.net>
Acked-by: NPavel Machek <pavel@ucw.cz>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

This solves the dependency between lis3lv02d.[ch] and ACPI specific
methods.  It introduces a ->bus_priv pointer to the device struct which is
casted to 'struct acpi_device' in the ACIP layer.  Changed hp_accel.c
accordingly.
Signed-off-by: NDaniel Mack <daniel@caiaq.de>
Acked-by: NPavel Machek <pavel@ucw.cz>
Acked-by: NEric Piel <eric.piel@tremplin-utc.net>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Move lis3lv02d_init_device() down so that the forward declaration of
lis3lv02d_add_fs() becomes unnecessary.
Signed-off-by: NDaniel Mack <daniel@caiaq.de>
Acked-by: NPavel Machek <pavel@ucw.cz>
Acked-by: NEric Piel <eric.piel@tremplin-utc.net>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

As Andrew noted, adev is pretty poor name for symbol being exported.
Rename it to lis3.
Signed-off-by: NPavel Machek <pavel@ucw.cz>
Cc: Eric Piel <eric.piel@tremplin-utc.net>
Cc: Vladimir Botka <vbotka@suse.cz>
Cc: <Quoc.Pham@hp.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Sensors responding with 0x3B to WHO_AM_I only have one data register per
direction, thus returning a signed byte from the position which is
occupied by the MSB in sensors responding with 0x3A.

Since multiple sensors share the reply to WHO_AM_I, we rename the defines
to better indicate what they identify (family of single and double
precision sensors).

We support both kind of sensors by checking for the sensor type on init
and defining appropriate data-access routines and sensor limits (for the
joystick) depending on what we find.

[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: NGiuseppe Bilotta <giuseppe.bilotta@gmail.com>
Acked-by: NEric Piel <Eric.Piel@tremplin-utc.net>
Cc: Pavel Machek <pavel@suse.cz>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

This adds freefall handling to hp_accel driver.  According to HP, it
should just work, without us having to set the chip up by hand.

hpfall.c is example .c program that parks the disk when accelerometer
detects free fall.  It should work; for now, it uses fixed 20seconds
protection period.
Signed-off-by: NPavel Machek <pavel@suse.cz>
Cc: Thomas Renninger <trenn@suse.de>
Cc: Éric Piel <eric.piel@tremplin-utc.net>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

The sensor can be accessed via various buses.  In particular, SPI, I²C
and, on HP laptops, via a specific ACPI API (the only one currently
supported).  Separate this latest platform from the core of the sensor
driver to allow support for the other bus type.  The second, and more
direct goal is actually to be able to merge this part with the
hp-disk-leds driver, which has the same ACPI PNP number.
Signed-off-by: NPavel Machek <pavel@suse.cz>
Signed-off-by: NEric Piel <eric.piel@tremplin-utc.net>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

The file(s) below do not use LINUX_VERSION_CODE nor KERNEL_VERSION.
  drivers/hwmon/lis3lv02d.c

This patch removes the said #include <version.h>.
Signed-off-by: NHuang Weiyi <weiyi.huang@gmail.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

This adds a driver to the accelerometer sensor found in several HP
laptops (under the commercial names of "HP Mobile Data Protection System
3D" and "HP 3D driveguard").  It tries to have more or less the same
interfaces as the hdaps and other accelerometer drivers: in sysfs and as
a joystick.

This driver was first written by Yan Burman.  Eric Piel has updated it
and slimed it up (including the removal of an interface to access to the
free-fall feature of the sensor because it is not reliable enough for
now).  Pavel Machek removed few more features and switched locking from
semaphore to mutex.

Several people have contributed to the database of the axes.

[eric.piel@tremplin-utc.net: LIS3LV02D: Conform to the new ACPI API]
Signed-off-by: NEric Piel <eric.piel@tremplin-utc.net>
Signed-off-by: NYan Burman <burman.yan@gmail.com>
Signed-off-by: NPavel Machek <pavel@suse.cz>
Cc: "Mark M. Hoffman" <mhoffman@lightlink.com>
Signed-off-by: NEric Piel <eric.piel@tremplin-utc.net>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>