Commit Graph

32 Commits

Author SHA1 Message Date
Jonathan Cameron
6c5bffa80e iio:accel: drop assign iio_info.driver_module and iio_trigger_ops.owner
The equivalent of both of these are now done via macro magic when
the relevant register calls are made.  The actual structure
elements will shortly go away.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Lars-Peter Clausen <lars@metafoo.de>
2017-08-22 21:22:40 +01:00
Arvind Yadav
e05d83bc58 iio: accel: bma180: constify i2c_device_id
i2c_device_id are not supposed to change at runtime. All functions
working with i2c_device_id provided by <linux/i2c.h> work with
const i2c_device_id. So mark the non-const structs as const.

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2017-08-20 10:15:45 +01:00
Javier Martinez Canillas
16f1b4f0ba iio: accel: bma180: Add OF device ID table
The driver doesn't have a struct of_device_id table but supported devices
are registered via Device Trees. This is working on the assumption that a
I2C device registered via OF will always match a legacy I2C device ID and
that the MODALIAS reported will always be of the form i2c:<device>.

But this could change in the future so the correct approach is to have an
OF device ID table if the devices are registered via OF.

Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2017-03-19 10:55:17 +00:00
Miguel Robles
7fa6790c22 iio: accel: Prefer unsigned int to bare use of unsigned
Fix checkpatch warnings:
WARNING: Prefer 'unsigned int' to bare use of 'unsigned'

Signed-off-by: Miguel Robles <miguel.robles@farole.net>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2017-03-19 10:37:21 +00:00
Alison Schofield
b75b58b46b iio: accel: bma180: use iio helper function to guarantee direct mode
Replace the code that guarantees the device stays in direct mode
with iio_device_claim_direct_mode() which does same.

Signed-off-by: Alison Schofield <amsfield22@gmail.com>
Cc: Daniel Baluta <daniel.baluta@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-08-15 17:12:43 +01:00
Gregor Boirie
bc2b7dab62 iio:core: timestamping clock selection support
Adds a new per-device sysfs attribute "current_timestamp_clock" to allow
userspace to select a particular POSIX clock for buffered samples and
events timestamping.

Following clocks, as listed in clock_gettime(2), are supported:
CLOCK_REALTIME, CLOCK_MONOTONIC, CLOCK_MONOTONIC_RAW,
CLOCK_REALTIME_COARSE, CLOCK_MONOTONIC_COARSE, CLOCK_BOOTTIME and
CLOCK_TAI.

Signed-off-by: Gregor Boirie <gregor.boirie@parrot.com>
Acked-by: Sanchayan Maity <maitysanchayan@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-06-30 19:41:38 +01:00
Krzysztof Kozlowski
2155971a66 iio: Drop owner assignment from i2c_driver
i2c_driver does not need to set an owner because i2c_register_driver()
will set it.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-07-11 18:50:07 +01:00
Octavian Purdila
70dddeee89 iio: fix drivers that check buffer->scan_mask
If the in-kernel push interface is used we may have a different masks
on the device buffer and the kernel buffer and in this case the device
should generate data for the reunion of the buffers, which is
available at indio_dev->active_scan_mask.

Compiled tested only except for bmc150-accel which was tested at
runtime with the hardware.

Signed-off-by: Octavian Purdila <octavian.purdila@intel.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-03-07 19:17:07 +00:00
Greg Kroah-Hartman
8deab4754c staging: iio: fix up merge error
Fix up a build merge error in drivers/iio/accel/bma180.c that I caused.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-09-22 07:54:10 -07:00
Greg Kroah-Hartman
d84a2b0d6f Merge 3.17-rc6 into staging-next.
We want the fixes in there, and it resolves a merge issue with
drivers/iio/accel/bma180.c

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-09-22 07:30:03 -07:00
Peter Meerwald
2017cff24c iio:bma180: Add BMA250 chip support
the BMA250 has only 10-bit resolution; while the data readout registers
have identical layout, the configuration is completely different compared
to the BMA180

datasheet: http://ae-bst.resource.bosch.com/media/products/dokumente/bma250/BST-BMA250-DS002-05.pdf

Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Cc: Oleksandr Kravchenko <o.v.kravchenko@globallogic.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-09-14 20:52:25 +01:00
Peter Meerwald
402a324e61 iio:bma180: Implement _available sysfs attribute dynamically
makes it easier to add more chip variants and removes redundancy:
scales and frequencies are now stated just once

Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Cc: Oleksandr Kravchenko <o.v.kravchenko@globallogic.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-09-14 20:50:58 +01:00
Peter Meerwald
6377aa496a iio:bma180: Prepare for accelerometer channels with different resolutions
allow to specify channels resolution and compute shift assuming
16-bit registers and MSB allocation

Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Cc: Oleksandr Kravchenko <o.v.kravchenko@globallogic.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-09-14 20:26:08 +01:00
Peter Meerwald
c1949ec18e iio:bma180: Introduce part-specific _config() and disable() code
move part of bma180_init() to bma180_config() (split initialization and
configuration code); configuration is heavily chip-specific

Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Cc: Oleksandr Kravchenko <o.v.kravchenko@globallogic.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-09-14 20:25:59 +01:00
Peter Meerwald
1b9030f5a0 iio:bma180: Introduce part_info to differentiate further chip variants
Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Cc: Oleksandr Kravchenko <o.v.kravchenko@globallogic.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-09-14 20:21:30 +01:00
Peter Meerwald
b9a6a237ff iio:bma180: Drop _update_scan_mode()
statically allocate maximum size

Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Cc: Oleksandr Kravchenko <o.v.kravchenko@globallogic.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-09-14 20:19:52 +01:00
Peter Meerwald
b81fbab7f5 iio:bma180: Expose temperature channel
8-bit signed; 0 LSB @ 24 °C, 0.5 °C per LSB

Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Cc: Oleksandr Kravchenko <o.v.kravchenko@globallogic.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-09-14 18:48:39 +01:00
Peter Meerwald
c7c69e8540 iio:bma180: Use bool instead of int for state
Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Cc: Oleksandr Kravchenko <o.v.kravchenko@globallogic.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-09-14 18:48:13 +01:00
Peter Meerwald
9a70b147da iio:bma180: Rename BMA_180 to BMA180_
Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Cc: Oleksandr Kravchenko <o.v.kravchenko@globallogic.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-09-14 18:47:51 +01:00
Peter Meerwald
cab767d54d iio:bma180: Prefix remaining tables and functions with bma18_
and minor cleanups

Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Cc: Oleksandr Kravchenko <o.v.kravchenko@globallogic.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-09-14 18:47:23 +01:00
Peter Meerwald
16ed8692fa iio:bma180: Enable use of device without IRQ
Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Cc: Oleksandr Kravchenko <o.v.kravchenko@globallogic.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-09-14 18:46:49 +01:00
Srinivas Pandruvada
0668a4e4d2 iio: accel: bma180: Fix indio_dev->trig assignment
This can result in wrong reference count for trigger device, call
iio_trigger_get to increment reference.
Refer to http://www.spinics.net/lists/linux-iio/msg13669.html for discussion
with Jonathan.

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Cc: Stable@vger.kernel.org
2014-08-25 21:48:04 +01:00
Peter Meerwald
9b2a4d35a6 iio:bma180: Missing check for frequency fractional part
val2 should be zero

This will make no difference for correct inputs but will reject
incorrect ones with a decimal part in the value written to the sysfs
interface.

Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Cc: Oleksandr Kravchenko <o.v.kravchenko@globallogic.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Cc: Stable@vger.kernel.org
2014-07-20 17:39:47 +01:00
Peter Meerwald
381676d5e8 iio:bma180: Fix scale factors to report correct acceleration units
The userspace interface for acceleration sensors is documented as using
m/s^2 units [Documentation/ABI/testing/sysfs-bus-iio]

The fullscale raw values for the BMA80 corresponds to -/+ 1, 1.5, 2, etc G
depending on the selected mode.

The scale table was converting to G rather than m/s^2.
Change the scaling table to match the documented interface.

See commit 71702e6e, iio: mma8452: Use correct acceleration units,
for a related fix.

Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Cc: Oleksandr Kravchenko <o.v.kravchenko@globallogic.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Cc: Stable@vger.kernel.org
2014-07-20 17:38:39 +01:00
Peter Meerwald
5c1449d41e iio:accel:bma180: Make LOW_PASS_FILTER_3DB_FREQUENCY shared_by_type
the property is not per-channel, but shared by type

Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Cc: Kravchenko Oleksandr <x0199363@ti.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-02-15 11:05:02 +00:00
Peter Meerwald
5585215b6d iio:accel:bma180: Use modifier instead of index in channel specification
This driver was not complying with the ABI and the purpose of this patch
is to bring it inline so that userspace will correctly identify the channels.

Should use channel modifiers (X/Y/Z), not channel indices
timestamp channel has scan index 3, not 4

Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Cc: Kravchenko Oleksandr <x0199363@ti.com>
Cc: Stable@vger.kernel.org
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-02-08 11:31:50 +00:00
Jonathan Cameron
7d7feae706 iio:accel:bma180 replaces IIO_ST macro with explicit entries to struct scan_type
The IIO_ST macro no longer covers all the elements of struct scan_type
and has this has lead to some bugs being introduced.

The drivers are easier to follow with this structure being directly
filled so that is now preferred.

Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
2013-12-17 20:55:01 +00:00
Greg Kroah-Hartman
e2aad1d571 Merge 3.12-rc2 into staging-next.
This resolves the merge problem with two iio drivers that Stephen
Rothwell pointed out.

Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-25 08:59:04 -07:00
Lars-Peter Clausen
6bf9d87756 iio:bma180: Use iio_push_buffers_with_timestamp()
Makes the code shorter and a bit less ugly.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Cc: Oleksandr Kravchenko <o.v.kravchenko@globallogic.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2013-09-21 19:23:50 +01:00
Peter Meerwald
234efa1703 iio: Fix bma180 dev-to-indio_dev conversion in suspend/resume
dev_to_iio_dev() is a false friend

Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Cc: Oleksandr Kravchenko <o.v.kravchenko@globallogic.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2013-09-21 12:04:34 +01:00
Lars-Peter Clausen
8c60c7e75d iio: Remove unnecessary casts for iio_push_to_buffers()
Now that iio_push_to_buffers() takes a void pointer for the data parameter we
can remove those casts to u8*.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2013-09-15 19:05:07 +01:00
Oleksandr Kravchenko
fdadbce0da iio: add Bosch BMA180 acceleration sensor driver
This patch adds IIO driver for Bosch BMA180 triaxial
acceleration sensor.
http://dlnmh9ip6v2uc.cloudfront.net/datasheets/
		Sensors/Accelerometers/BST-BMA180-DS000-07_2.pdf

Signed-off-by: Oleksandr Kravchenko <o.v.kravchenko@globallogic.com>
Acked-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2013-08-28 20:12:22 +01:00