linux-toradex.git/drivers/iio/accel, branch v4.10

iio: accel: st_accel: fix LIS3LV02 reading and scaling

2016-12-31T14:35:04+00:00

The LIS3LV02 has a special bit that need to be set to get the
read values left aligned. Before this patch we get gibberish
like this:

iio_generic_buffer -a -c10 -n lis3lv02dl_accel
(...)
0.000000 -0.010042 -0.642688 19155832931907
0.000000 -0.010042 -0.642688 19155858751073

Which is because we read a raw value for 1g as 64 which is
the nominal 1024 for 1g shifted 4 bits to the left by being
right-aligned rather than left aligned.

Since all other sensors are left aligned, add some code to
set the special DAS (data alignment setting) bit to 1 so that
the right value is now read like this:

iio_generic_buffer -a -c10 -n lis3lv02dl_accel
(...)
0.000000 -0.147095 -10.120135 24761614364956
-0.029419 -0.176514 -10.120135 24761631624540

The scaling was weird as well: we have a gain of 1000 for 1g
and 3000 for 6g. I don't even remember how I came up with the
old values but they are wrong.

Fixes: 3acddf74f807 ("iio: st-sensors: add support for lis3lv02d accelerometer")
Cc: Lorenzo Bianconi 
Cc: Giuseppe Barba 
Cc: Denis Ciocca 
Signed-off-by: Linus Walleij 
Signed-off-by: Jonathan Cameron

iio: accel: st_accel: inline per-sensor data

2016-11-19T12:25:36+00:00

We have #defines for all the individual sensor registers and
value/mask pairs #defined at the top of the file and used at
exactly one spot.

This is usually good if the #defines give a meaning to the
opaque magic numbers.

However in this case, the semantic meaning is inherent in the
name of the C99-addressable fields, and that means duplication
of information, and only makes the code hard to maintain since
you every time have to add a new #define AND update the site
where it is to be used.

Get rid of the #defines and just open code the values into the
appropriate struct elements. Make sure to explicitly address
the .hz and .value fields in the st_sensor_odr_avl struct
so that the meaning of all values is clear.

This patch is purely syntactic should have no semantic effect.

Cc: Lorenzo Bianconi 
Signed-off-by: Linus Walleij 
Acked-by: Lorenzo Bianconi 
Signed-off-by: Jonathan Cameron

Merge 4.9-rc5 into staging-next

2016-11-14T07:53:56+00:00

We want the staging/iio fixes in here as well to resolve issues and
merge problems.

Signed-off-by: Greg Kroah-Hartman

iio: accel: st_accel: add support to lng2dm

2016-11-01T18:50:02+00:00

add support to STMicroelectronics LNG2DM accelerometer to
st_accel framework

Signed-off-by: Lorenzo Bianconi 
Signed-off-by: Jonathan Cameron

iio: st_sensors: fix scale configuration for h3lis331dl

2016-10-30T16:46:46+00:00

fix scale configuration/parsing for h3lis331dl accel driver
when sensitivity is higher than 1(m/s^2)/digit

Signed-off-by: Lorenzo Bianconi 
Fixes: 1e52fefc9b0c ("iio: accel: Add support for the h3lis331dl accelerometer")
Cc: 
Signed-off-by: Jonathan Cameron

staging:iio:accel:sca3000 Move out of staging.

2016-10-23T18:34:07+00:00

Now the driver is in a reasonable state, lets get it (finally) out
of staging.

Signed-off-by: Jonathan Cameron 
Reviewed-by: Lars-Peter Clausen

iio: accel: mma8452: claim direct mode during write raw

2016-10-23T18:33:54+00:00

Driver was checking for direct mode but not locking it.  Use
claim/release helper functions to guarantee the device stays
in direct mode during all write raw operations.

Signed-off-by: Alison Schofield 
Signed-off-by: Jonathan Cameron

iio: accel: mma8452: claim direct mode during raw reads

2016-10-23T18:33:54+00:00

Driver was checking for direct mode but not locking it.  Use
claim/release helper functions to guarantee the device stays
in direct mode during raw reads.

Signed-off-by: Alison Schofield 
Signed-off-by: Jonathan Cameron

iio: accel: Add driver for the MiraMEMS DA280 3-axis 14-bit digital accelerometer

2016-10-11T18:40:15+00:00

Add an iio driver for the MiraMEMS DA280 3-axis 14-bit accelerometer, as
well as for the DA226 which is a fully compatible 2-axis version.

Datasheets for the DA280 and DA226 can be found at the manufacturers site:
http://www.miramems.com/en/products.asp?list=1

Signed-off-by: Hans de Goede 
Acked-by: Rob Herring 
Signed-off-by: Jonathan Cameron

iio: accel: Add driver for the MiraMEMS DA311 3-axis 12-bit digital accelerometer

2016-10-11T18:39:14+00:00

This driver is based on the DA311 Android driver which can be found here:
https://git.matricom.net/Firmware/kernel_amlogic_meson-common/tree/1e70113a5befd07debb68f537156def84c5be57a/drivers/amlogic/input/sensor
the mir3da_* files are the DA311 driver.

Unfortunately there is no datasheet.

Signed-off-by: Hans de Goede 
Acked-by: Rob Herring 
Signed-off-by: Jonathan Cameron