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Date: Mon, 30 Nov 2009 16:18:42 +0100 From: Éric Piel <eric.piel@...mplin-utc.net> To: Samu Onkalo <samu.p.onkalo@...ia.com> CC: linux-kernel@...r.kernel.org, lm-sensors@...sensors.org Subject: Re: [PATCH v3 5/5] LIS3: Update documentation to match latest changes Op 19-11-09 10:27, Samu Onkalo schreef: Acked-by: Éric Piel <eric.piel@...mplin-utc.net> > Signed-off-by: Samu Onkalo <samu.p.onkalo@...ia.com> > --- > Documentation/hwmon/lis3lv02d | 31 ++++++++++++++++++++++++------- > 1 files changed, 24 insertions(+), 7 deletions(-) > > diff --git a/Documentation/hwmon/lis3lv02d b/Documentation/hwmon/lis3lv02d > index 21f0902..cd354e3 100644 > --- a/Documentation/hwmon/lis3lv02d > +++ b/Documentation/hwmon/lis3lv02d > @@ -20,18 +20,35 @@ sporting the feature officially called "HP Mobile Data Protection System 3D" or > models (full list can be found in drivers/hwmon/hp_accel.c) will have their > axis automatically oriented on standard way (eg: you can directly play > neverball). The accelerometer data is readable via > -/sys/devices/platform/lis3lv02d. > +/sys/devices/platform/lis3lv02d. Reported values are scaled > +to mg values (1/1000th of earth gravity). > > Sysfs attributes under /sys/devices/platform/lis3lv02d/: > position - 3D position that the accelerometer reports. Format: "(x,y,z)" > -calibrate - read: values (x, y, z) that are used as the base for input > - class device operation. > - write: forces the base to be recalibrated with the current > - position. > -rate - reports the sampling rate of the accelerometer device in HZ > +rate - read reports the sampling rate of the accelerometer device in HZ. > + write changes sampling rate of the accelerometer device. > + Only values which are supported by HW are accepted. > +selftest - performs selftest for the chip as specified by chip manufacturer. > > This driver also provides an absolute input class device, allowing > -the laptop to act as a pinball machine-esque joystick. > +the laptop to act as a pinball machine-esque joystick. Joystick device can be > +calibrated. Joystick device can be in two different modes. > +By default output values are scaled between -32768 .. 32767. In joystick raw > +mode, joystick and sysfs position entry have the same scale. There can be > +small difference due to input system fuzziness feature. > +Events are also available as input event device. > + > +Selftest is meant only for hardware diagnostic purposes. It is not meant to be > +used during normal operations. Position data is not corrupted during selftest > +but interrupt behaviour is not quaranteed to work reliably. In test mode, the > +sensing element is internally moved little bit. Selftest measures difference > +between normal mode and test mode. Chip specifications tell the acceptance > +limit for each type of the chip. Limits are provided via platform data > +to allow adjustment of the limits without a change to the actual driver. > +Seltest returns either "OK x y z" or "FAIL x y z" where x, y and z are > +measured difference between modes. Axes are not remapped in selftest mode. > +Measurement values are provided to help HW diagnostic applications to make > +final decision. > > On HP laptops, if the led infrastructure is activated, support for a led > indicating disk protection will be provided as /sys/class/leds/hp::hddprotect. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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