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path: root/drivers/hwmon/lis3lv02d.c
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2011-03-21Move lis3lv02d drivers to drivers/miscJean Delvare
The lis3lv02d drivers aren't hardware monitoring drivers, so the don't belong to drivers/hwmon. Move them to drivers/misc, short of a better home. Signed-off-by: Jean Delvare <khali@linux-fr.org> Acked-by: Guenter Roeck <guenter.roeck@ericsson.com> Acked-by: Eric Piel <eric.piel@tremplin-utc.net> Acked-by: Jonathan Cameron <jic23@cam.ac.uk> Tested-by: Eric Piel <eric.piel@tremplin-utc.net> Tested-by: Takashi Iwai <tiwai@suse.de>
2011-01-25hwmon: (lis3) turn down the no IRQ messageKalhan Trisal
Turn down the no IRQ message - on some platforms that's a normal state of affairs. Signed-off-by: Kalhan Trisal <kalhan.trisal@intel.com> Signed-off-by: Alan Cox <alan@linux.intel.com> Acked-by: Eric Piel <eric.piel@tremplin-utc.net> Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
2011-01-08hwmon: (lis3lv02d) Use pr_fmt and pr_<level>Joe Perches
Added #define pr_fmt KBUILD_MODNAME ": " fmt Converted printks to pr_<level> Coalesced any long formats Removed prefixes from formats Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
2010-10-25hwmon: lis3: Enhance lis3 selftest with IRQ line testSamu Onkalo
Configure chip to data ready mode in selftest and count received interrupts to see that interrupt line(s) are working. Signed-off-by: Samu Onkalo <samu.p.onkalo@nokia.com> Acked-by: Eric Piel <eric.piel@tremplin-utc.net> Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
2010-10-25hwmon: lis3: use block read to access data registersSamu Onkalo
Add optional blockread function to interface driver. If available the chip driver uses it for data register access. For 12 bit device it reads 6 bytes to get 3*16bit data. For 8 bit device it reads out 5 bytes since every second byte is dummy. This optimizes bus usage and reduces number of operations and interrupts needed for one data update. Signed-off-by: Samu Onkalo <samu.p.onkalo@nokia.com> Acked-by: Jonathan Cameron <jic23@cam.ac.uk> Acked-by: Eric Piel <eric.piel@tremplin-utc.net> Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
2010-10-25hwmon: lis3: Adjust fuzziness for 8 bit deviceSamu Onkalo
Default fuziness is set smaller for 8 device. In 12 bit device LSB is quite close to 1 mg (mg = 1 / 1000 of earth gravity). In 8bit device LSB is about 18 mg. Set fuziness to 1 for 8 bit device. Signed-off-by: Samu Onkalo <samu.p.onkalo@nokia.com> Acked-by: Eric Piel <eric.piel@tremplin-utc.net> Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
2010-10-25hwmon: lis3: New parameters to platform dataSamu Onkalo
Added default output data rate setting to platform data. If default rate is 0, reset default value is used. Added control for duration via platform data. Added possibility to configure interrupts to trig on both rising and falling edge. The lis3 WU unit can be configured quite many ways and with some configurations it is quite handy to get coordinate refresh when some event trigs and when it reason goes away. Signed-off-by: Samu Onkalo <samu.p.onkalo@nokia.com> Acked-by: Jonathan Cameron <jic23@cam.ac.uk> Acked-by: Eric Piel <eric.piel@tremplin-utc.net> Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
2010-10-25hwmon: lis3: Power on correctionsSamu Onkalo
Sometimes lis3 chip seems to fail to setup factory tuning at boot up. This probably happens if there is some odd power ramp down ramp up sequence for example in device restart. Set boot bit in control2 register to trig boot sequence manually and wait until it is finished. Signed-off-by: Samu Onkalo <samu.p.onkalo@nokia.com> Acked-by: Jonathan Cameron <jic23@cam.ac.uk> Acked-by: Eric Piel <eric.piel@tremplin-utc.net> Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
2010-10-25hwmon: lis3: Update coordinates at polled device openSamu Onkalo
Call input device poll function at device open to refresh coordinates immediately. This is needed for the case where poll interval is set to zero and coordinate updates happens purely under interrupt control. Signed-off-by: Samu Onkalo <samu.p.onkalo@nokia.com> Acked-by: Eric Piel <eric.piel@tremplin-utc.net> Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
2010-10-25hwmon: lis3: Cleanup interrupt handlingSamu Onkalo
Irqcfg moved to chip data instead of platform data. This simplifies access in interrupt handler little bit. Input device open and close functions set status for interrupt threaded handler once. Unnecessary check for interrupt source removed since it is enough that active interrupt line indicates that there was an interrupt. Signed-off-by: Samu Onkalo <samu.p.onkalo@nokia.com> Acked-by: Eric Piel <eric.piel@tremplin-utc.net> Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
2010-10-25hwmon: lis3: regulator controlSamu Onkalo
Based on pm_runtime control, turn lis3 regulators on and off. Perform context save and restore on transitions. Feature is optional and must be enabled in platform data. Signed-off-by: Samu Onkalo <samu.p.onkalo@nokia.com> Acked-by: Jonathan Cameron <jic23@cam.ac.uk> Acked-by: Eric Piel <eric.piel@tremplin-utc.net> Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
2010-10-25hwmon: lis3: pm_runtime supportSamu Onkalo
Add pm_runtime support to lis3 core driver. Add pm_runtime support to lis3 i2c driver. spi and hp_accel drivers are not yet supported. Old always on functionality remains for those. For sysfs there is 5 second delay before turning off the chip to avoid long ramp up delay. Signed-off-by: Samu Onkalo <samu.p.onkalo@nokia.com> Acked-by: Jonathan Cameron <jic23@cam.ac.uk> Acked-by: Eric Piel <eric.piel@tremplin-utc.net> Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
2010-10-25hwmon: (lis3) add axes module parameter for custom axis-mappingTakashi Iwai
The axis-mapping of lis3dev device on many (rather most) HP machines doesn't follow the standard. When each new model appears, users need to adjust again. Testing this requires the rebuild of kernel, thus it's not trivial for end-users. This patch adds a module parameter "axes" to allow a custom axis-mapping without patching and recompiling the kernel driver. User can pass the parameter such as axes=3,2,1. Also it can be changed via sysfs. Signed-off-by: Takashi Iwai <tiwai@suse.de> Acked-by: Eric Piel <eric.piel@tremplin-utc.net> Cc: Jean Delvare <khali@linux-fr.org> Cc: Guenter Roeck <guenter.roeck@ericsson.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
2010-10-25hwmon: (lis3) Add support for new LIS3DC / HP3DC chipTakashi Iwai
A new version of LIS3 chip has slight incompatibilities from former versions. This patch adds the minimal support for it. Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
2010-09-24hwmon: (lis3) Fix Oops with NULL platform dataTakashi Iwai
The recent addition of threaded irq handler causes a NULL dereference when used with hp_accel driver, which has NULL pdata. Acked-by: Samu Onkalo <samu.p.onkalo@nokia.com> Cc: <stable@kernel.org> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
2010-05-25lis3: setup poll interval limitsSamu Onkalo
Set valid adjustment window (0 - 2000ms). Signed-off-by: Samu Onkalo <samu.p.onkalo@nokia.com> Acked-by: Eric Piel <eric.piel@tremplin-utc.net> Cc: Daniel Mack <daniel@caiaq.de> Cc: Pavel Machek <pavel@ucw.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-05-25lis3: interrupt handlers for 8bit wakeup and click eventsSamu Onkalo
Content for the 8bit device threaded interrupt handlers. Depending on the interrupt line and chip configuration, either click or wakeup / freefall handler is called. In case of click, BTN_ event is sent via input device. In case of wakeup or freefall, input device ABS_ events are updated immediatelly. It is still possible to configure interrupt line 1 for fast freefall detection and use the second line either for click or threshold based interrupts. Or both lines can be used for click / threshold interrupts. Polled input device can be set to stopped state and still get coordinate updates via input device using interrupt based method. Polled mode and interrupt mode can also be used parallel. BTN_ events are remapped based on existing axis remapping information. Signed-off-by: Samu Onkalo <samu.p.onkalo@nokia.com> Acked-by: Eric Piel <eric.piel@tremplin-utc.net> Cc: Daniel Mack <daniel@caiaq.de> Cc: Pavel Machek <pavel@ucw.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-05-25lis3: add skeletons for interrupt handlersSamu Onkalo
Original lis3 driver didn't provide interrupt handler(s) for click or threshold event handling. This patch adds threaded handlers for one or two interrupt lines for 8 bit device. Actual content for interrupt handling is provided in the separate patch. Signed-off-by: Samu Onkalo <samu.p.onkalo@nokia.com> Tested-by: Daniel Mack <daniel@caiaq.de> Acked-by: Eric Piel <eric.piel@tremplin-utc.net> Cc: Pavel Machek <pavel@ucw.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-05-25lis3: introduce platform data for second ff / wu unitSamu Onkalo
8 bit device has two wakeup / free fall units. It was not possible to configure the second unit. This patch introduces configuration entry to the platform data and also corresponding changes to the 8 bit setup function. High pass filters were enabled by default. Patch introduces configuration option for high pass filter cut off frequency and also possibility to disable or enable the filter via platform data. Since the control is a new one and default state was filter enabled, new option is used to disable the filter. This way old platform data is still compatible with the change. Signed-off-by: Samu Onkalo <samu.p.onkalo@nokia.com> Acked-by: Eric Piel <eric.piel@tremplin-utc.net> Tested-by: Daniel Mack <daniel@caiaq.de> Cc: Pavel Machek <pavel@ucw.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-05-25lis3: separate configuration function for 8 bit deviceSamu Onkalo
Separate configuration function for 8 bit version of the chip. This way generic part of the init function stays little bit more readable. Signed-off-by: Samu Onkalo <samu.p.onkalo@nokia.com> Acked-by: Eric Piel <eric.piel@tremplin-utc.net> Tested-by: Daniel Mack <daniel@caiaq.de> Cc: Pavel Machek <pavel@ucw.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-12-15lis3: scale output values to mgSamu Onkalo
Report output values as 1/1000 of earth gravity. Output values from lis3 can be read from sysfs position entry and from input device. Input device can be accessed as event device and as joystick device. Joystick device can be in two modes. Meaning of the output values varies from case to case depending on the chip type and configuration (scale). Only joystick interface in JS_CORR_BROKEN mode returned somehow similar output values in different configurations. Joystick device is in that state by default in case of lis3. Position sysfs entry, input event device and raw joystick device have been little bit broken since meaning of the output values has been varied between 12 and 8 bit devices. Applications which relayed on those methods failed if the chip is different than the expected one. This patch converts output values to mean similar thing in different configurations. Both 8 and 12 bit devices reports now same acceleration values. If somebody implements full scale support to the driver, output values will still mean the same. Scaling factor and input device range must be updated in that case. Joystick interface in JS_CORR_BROKEN mode is not touched by this patch. All other interfaces have different scale after this change. For 12 bit device scaling factor is 0.977 which keeps scaled and unscaled values are quite close to each others. For 8 bit device, scaled values are 18 times bigger than unscaled values. Signed-off-by: Samu Onkalo <samu.p.onkalo@nokia.com> Acked-by: Éric Piel <Eric.Piel@tremplin-utc.net> Cc: Pavel Machek <pavel@ucw.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-12-15lis3: sysfs entry for setting chip measurement rateSamu Onkalo
It is possible to read position information at the chip measurement rate via sysfs. This patch adds possibility to configure chip measurement rate. Signed-off-by: Samu Onkalo <samu.p.onkalo@nokia.com> Signed-off-by: Éric Piel <Eric.Piel@tremplin-utc.net> Cc: Pavel Machek <pavel@ucw.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-12-15lis3lv02d: remove calibaration functionalitySamu Onkalo
Chip is calibrated by the manufacturer. There is no need to calibarate it at driver level. If the chip is used as a joystick, calibaration can be done using joystick device calibration mechanism. Signed-off-by: Samu Onkalo <samu.p.onkalo@nokia.com> Acked-by: Éric Piel <Eric.Piel@tremplin-utc.net> Cc: Pavel Machek <pavel@ucw.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-12-15lis3: selftest supportSamu Onkalo
Implement selftest feature as specified by chip manufacturer. Control: read selftest sysfs entry Response: "OK x y z" or "FAIL x y z" where x, y, and z are difference between selftest mode and normal mode. Test is passed when values are within acceptance limit values. Acceptance limits are provided via platform data. See chip spesifications for acceptance limits. If limits are not properly set, OK / FAIL decision is meaningless. However, userspace application can still make decision based on the numeric x, y, z values. Selftest is meant for HW diagnostic purposes. It is not meant to be called during normal use of the chip. It may cause false interrupt events. Selftest mode delays polling of the normal results but it doesn't cause wrong values. Chip must be in static state during selftest. Any acceration during the test causes most probably failure. Signed-off-by: Samu Onkalo <samu.p.onkalo@nokia.com> Acked-by: Éric Piel <Eric.Piel@tremplin-utc.net> Cc: Pavel Machek <pavel@ucw.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-12-15lis3lv02d: proper power on sequenceSamu Onkalo
Lis3 accelerometer sensors have quite long power on delay (up to 125 ms). This patch adds necessary delay to power on sequence for currently supported lis3 chips. Signed-off-by: Samu Onkalo <samu.p.onkalo@nokia.com> Tested-by: Éric Piel <eric.piel@tremplin-utc.net> Acked-by: Éric Piel <eric.piel@tremplin-utc.net> Cc: Pavel Machek <pavel@ucw.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-12-15lis3: fix show rate for 8 bits chipsÉric Piel
Originally the driver was only targeted to 12bits sensors. When support for 8bits sensors was added, some slight difference in the registers were overlooked. This should fix it, both for initialization, and for displaying the rate. Reported-by: Kalhan Trisal <kalhan.trisal@intel.com> Reported-by: Christoph Plattner <christoph.plattner@gmx.at> Tested-by: Christoph Plattner <christoph.plattner@gmx.at> Tested-by: Samu Onkalo <samu.p.onkalo@nokia.com> Signed-off-by: Éric Piel <eric.piel@tremplin-utc.net> Signed-off-by: Samu Onkalo <samu.p.onkalo@nokia.com> Cc: Pavel Machek <pavel@ucw.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-12-15lis3: update documentation and commentsÉric Piel
Most of the documentation and comments were written when the driver was only supporting one type of chip, only via ACPI/HP. Update the info to the much clearer understanding that we have now. Signed-off-by: Éric Piel <eric.piel@tremplin-utc.net> Signed-off-by: Samu Onkalo <samu.p.onkalo@nokia.com> Cc: Pavel Machek <pavel@ucw.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-12-15lis3lv02d: correct memory leak in module unloadSamu Onkalo
polled input device itself was not free'd. Signed-off-by: Samu Onkalo <samu.p.onkalo@nokia.com> Tested-by: Éric Piel <eric.piel@tremplin-utc.net> Acked-by: Éric Piel <eric.piel@tremplin-utc.net> Cc: Pavel Machek <pavel@ucw.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-12-15lis3lv02d: send sync eventSamu Onkalo
Send input_sync after each measurement round. This helps userspace to detect which reported values belongs to the same measurement. Signed-off-by: Samu Onkalo <samu.p.onkalo@nokia.com> Tested-by: Éric Piel <eric.piel@tremplin-utc.net> Acked-by: Éric Piel <eric.piel@tremplin-utc.net> Cc: Pavel Machek <pavel@ucw.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-09-22lis3: add free-fall/wakeup function via platform_dataDaniel Mack
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: Daniel Mack <daniel@caiaq.de> Acked-by: Pavel Machek <pavel@ucw.cz> Cc: 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: 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>
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