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path: root/drivers/hwmon/lis3lv02d.c
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2009-06-16lis3: add click functionDaniel Mack
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: Daniel Mack <daniel@caiaq.de> Acked-by: Pavel Machek <pavel@ucw.cz> Acked-by: Eric Piel <eric.piel@tremplin-utc.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-16lis3: use input_polled_deviceEric Piel
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: Eric Piel <eric.piel@tremplin-utc.net> Signed-off-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-16lis3: remove automatic shutdown of the deviceEric Piel
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 ef2cfc790bf5f0ff189b01eabc0f4feb5e8524df 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: Eric Piel <eric.piel@tremplin-utc.net> Signed-off-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-16lis3: fix misc device unregistering and printkEric Piel
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: Eric Piel <eric.piel@tremplin-utc.net> Acked-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-01lis3: solve dependency between core and ACPIDaniel Mack
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: Daniel Mack <daniel@caiaq.de> Acked-by: Pavel Machek <pavel@ucw.cz> Acked-by: Eric Piel <eric.piel@tremplin-utc.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-01lis3: reorder functions to make forward decl obsoleteDaniel Mack
Move lis3lv02d_init_device() down so that the forward declaration of lis3lv02d_add_fs() becomes unnecessary. Signed-off-by: Daniel Mack <daniel@caiaq.de> Acked-by: Pavel Machek <pavel@ucw.cz> Acked-by: Eric Piel <eric.piel@tremplin-utc.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-01hp_accel: adev is poor name of exported symbolPavel Machek
As Andrew noted, adev is pretty poor name for symbol being exported. Rename it to lis3. Signed-off-by: Pavel 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: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-02-18lis3lv02d: support both one- and two-byte sensorsGiuseppe Bilotta
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: Giuseppe Bilotta <giuseppe.bilotta@gmail.com> Acked-by: Eric Piel <Eric.Piel@tremplin-utc.net> Cc: Pavel Machek <pavel@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-02-18hp accelerometer: add freefall detectionPavel Machek
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: Pavel Machek <pavel@suse.cz> Cc: Thomas Renninger <trenn@suse.de> Cc: Éric Piel <eric.piel@tremplin-utc.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-09LIS3LV02D: separate the core from HP ACPI APIEric Piel
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: Pavel Machek <pavel@suse.cz> Signed-off-by: Eric Piel <eric.piel@tremplin-utc.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-15LIS3LV02Dx: remove unused #include <version.h>Huang Weiyi
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: Huang Weiyi <weiyi.huang@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-12LIS3LV02Dx Accelerometer driverPavel Machek
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: Eric Piel <eric.piel@tremplin-utc.net> Signed-off-by: Yan Burman <burman.yan@gmail.com> Signed-off-by: Pavel Machek <pavel@suse.cz> Cc: "Mark M. Hoffman" <mhoffman@lightlink.com> Signed-off-by: Eric Piel <eric.piel@tremplin-utc.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>