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* lis3lv02d: make regulator API usage unconditionalMark Brown2011-10-311-1/+0
| | | | | | | | | | | | | | | | The regulator API contains a range of features for stubbing itself out when not in use and for transparently restricting the actual effect of regulator API calls where they can't be supported on a particular system so that drivers don't need to individually implement this. Simplify the driver slightly by making use of this idiom. The only in tree user is ecovec24 which does not use the regulator API. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Cc: Éric Piel <eric.piel@tremplin-utc.net> Cc: Ilkka Koskinen <ilkka.koskinen@nokia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* hwmon: lis3: Short explanations of platform data fieldsSamu Onkalo2010-10-251-0/+46
| | | | | | | | | Short documentation at kernel doc format. 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>
* hwmon: lis3: use block read to access data registersSamu Onkalo2010-10-251-0/+1
| | | | | | | | | | | | | | 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>
* hwmon: lis3: New parameters to platform dataSamu Onkalo2010-10-251-1/+5
| | | | | | | | | | | | | | | | 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>
* hwmon: lis3: regulator controlSamu Onkalo2010-10-251-0/+2
| | | | | | | | | | | | 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>
* lis3: interrupt handlers for 8bit wakeup and click eventsSamu Onkalo2010-05-251-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | 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>
* lis3: add skeletons for interrupt handlersSamu Onkalo2010-05-251-0/+1
| | | | | | | | | | | | | | 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>
* lis3: introduce platform data for second ff / wu unitSamu Onkalo2010-05-251-0/+9
| | | | | | | | | | | | | | | | | | | | | 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>
* lis3: selftest supportSamu Onkalo2009-12-151-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* lis3lv02d: axis remap and resource setup/releaseSamu Onkalo2009-12-151-0/+12
| | | | | | | | | | | | | Add the possibility to remap axes via platform data. Function pointers for resource setup and release purposes 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> Cc: Jean Delvare <khali@linux-fr.org> Cc: "Trisal, Kalhan" <kalhan.trisal@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* lis3: add free-fall/wakeup function via platform_dataDaniel Mack2009-09-221-0/+9
| | | | | | | | | | | | | 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>
* lis3: fix typoDaniel Mack2009-09-221-1/+1
| | | | | | | | | | | Bit 0x80 in CTRL_REG3 is an ACTIVE_LOW rather than an ACTIVE_HIGH function, I got that wrong during my last change. 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>
* lis3: add click functionDaniel Mack2009-06-161-0/+39
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>
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