It is quite strange that BMA222 and BMA222E have very close, yet
subtly different values in their scale tables. Comparing the datasheets
this is simply because the "Resolution" for the different measurement
ranges are documented with different precision.
For example, for +-2g the BMA222 datasheet [1] suggests a resolution
of 15.6 mg/LSB, while the BMA222E datasheet [2] suggests 15.63 mg/LSB.
Actually, there is no need to rely on the resolution given by the Bosch
datasheets. The resolution and scale can be calculated more consistently
and accurately using the range (e.g. +-2g) and the channel size (e.g. 8 bits).
Distributing 4g (-2g to 2g) over 8 bits results in an exact resolution
of (4g / 2^8) = 15.625 mg/LSB which is the same value as in both datasheets,
just slightly more accurate. Multiplying g = 9.80665 m/s^2 we get a more
accurate value for the IIO scale table.
Generalizing this we can calculate the scale tables more accurately using
(range / 2^bits) * g * 10^6 (because of IIO_VAL_INT_PLUS_MICRO).
Document this and make the scale tables more consistent and accurate
for all the variants using that formula. Now the scale tables for
BMA222 and BMA222E are consistent and probably slightly more accurate.
[1]: https://media.digikey.com/pdf/Data%20Sheets/Bosch/BMA222.pdf
[2]: https://www.mouser.com/datasheet/2/783/BST-BMA222E-DS004-06-1021076.pdf
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gnail.com>
Link: https://lore.kernel.org/r/20210611182442.1971-1-stephan@gerhold.net
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
General driver churn doesn't always include updates of header includes.
Manual review of the output of the include-what-you-use checker lead to the
following cleanup. Hopefuly this brings things back to a good state for the
hid-sensor drivers.
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Jiri Kosina <jikos@kernel.org>
Cc: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Link: https://lore.kernel.org/r/20210608205510.4033887-1-jic23@kernel.org
A namespace for exported symbols makes clear who is a provider
and who is a consumer of the certain resources. Besides that,
it doesn't pollute the common namespace.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Link: https://lore.kernel.org/r/20210614162447.5392-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Commit c1d1c4a62d ("iio: accel: bma180: BMA254 support") added
BMA254 support to the bma180 driver and changed some naming to BMA25x
to make it easier to add support for BMA253 and BMA255.
Unfortunately, there is quite some overlap between the bma180 driver
and the bmc150-accel driver. Back when the commit was made, the
bmc150-accel driver actually already had support for BMA255, and
adding support for BMA254 would have been as simple as adding a new
compatible to bmc150-accel.
The bmc150-accel driver is a bit better for BMA254 since it also
supports the motion trigger/interrupt functionality. Fortunately,
moving BMA254 support over to bmc150-accel is fairly simple because
the drivers have compatible device tree bindings.
Revert most of the changes for BMA254 support in bma180 and move
BMA254 over to bmc150-accel. This has the following advantages:
- Support for motion trigger/interrupt
- Fix incorrect scale values (BMA254 currently uses the same as
BMA250 but actually they're different because of 10 vs 12 bits
data size)
- Less code than before :)
BMA250 could be potentially also moved but it's more complicated
because its chip_id conflicts with the one for BMA222 in bmc150-accel.
Perhaps there are also other register differences, I did not investigate
further yet (and I have no way to test it).
Cc: Peter Meerwald <pmeerw@pmeerw.net>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
Link: https://lore.kernel.org/r/20210611080903.14384-11-stephan@gerhold.net
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
BMA253 is mostly like BMA255 and has exactly the same register layout
as used by the bmc150-accel driver as far I can tell. Making it work
is as simple as adding new device IDs for it since it has the same
chip_id = 0xFA (250) as BMA255 and others.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
Link: https://lore.kernel.org/r/20210611080903.14384-8-stephan@gerhold.net
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Right now all the device IDs are listed in seemingly random order,
make this consistent by ordering those alphabetically. Also, order
bmc150_accel_chip_info_tbl by chip ID for the same reason.
Suggested-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
Link: https://lore.kernel.org/r/20210611080903.14384-6-stephan@gerhold.net
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
The chips supported by the bmc150-accel driver are clearly documented
in Kconfig, in the bmc150_accel_chip_info_tbl as well as in all the
device ID tables in the I2C/SPI drivers. It's easy to forget to update
the lists in the file header. Drop those entirely to reduce the amount
of changes required to add new chip variants.
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
Link: https://lore.kernel.org/r/20210611080903.14384-5-stephan@gerhold.net
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Commit 0ad4bf3701 ("iio:accel:bmc150-accel: Use the chip ID to detect
sensor variant") stopped using the I2C/ACPI match data to look up the
bmc150_accel_chip_info. However, the bmc150_accel_chip_info_tbl remained
as-is, with multiple entries with the same chip_id (e.g. 0xFA for
BMC150/BMI055/BMA255). This is redundant now because actually the driver
will always select the first entry with a matching chip_id.
So even if a device probes e.g. with BMA0255 it will end up using the
chip_info for BMC150. And in general that's fine for now, the entries
for BMC150/BMI055/BMA255 were exactly the same anyway (except for the
name, which is replaced with the more accurate one later).
But in this case it's misleading because it suggests that one should
add even more entries with the same chip_id when adding support for
new variants. Let's make that more clear by removing the enum with
the chip identifiers entirely and instead have only one entry per
chip_id.
Note that we may need to bring back some mechanism to differentiate
between different chips with the same chip_id in the future.
For example, BMA250 (currently supported by the bma180 driver) has the
same chip_id = 0x03 as BMA222 even though they have different channel
sizes (8 bits vs 10 bits). But in any case, that mechanism would
need to look quite different from what we have right now.
Cc: Bastien Nocera <hadess@hadess.net>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
Link: https://lore.kernel.org/r/20210611080903.14384-4-stephan@gerhold.net
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
The Kconfig option currently says that all Bosch accelerometers
supported by the bmc150-accel driver are combo chips with both
accelerometer and magnetometer. This is wrong: actually only BMC150
is such a combo. The BMA* variants only contain an accelerometer
and the BMI055 actually is a accelerometer + gyroscope combo.
Clarify this in the help text and also make the list of supported
variants complete and sorted for consistency.
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
Link: https://lore.kernel.org/r/20210611080903.14384-3-stephan@gerhold.net
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
According to sysfs-bus-iio documentation the unit for accelerometer
values after applying scale/offset should be m/s^2, not g, which explains
why the scale values for the other variants in bmc150-accel do not match
exactly the values given in the datasheet.
To get the correct values, we need to multiply the BMA222 scale values
by g = 9.80665 m/s^2.
Fixes: a1a210bf29 ("iio: accel: bmc150-accel: Add support for BMA222")
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
Link: https://lore.kernel.org/r/20210611080903.14384-2-stephan@gerhold.net
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
According to the BMA253 datasheet [1] and BMA250 datasheet [2] the
bandwidth value for BMA25x should be set as 01xxx:
"Settings 00xxx result in a bandwidth of 7.81 Hz; [...]
It is recommended [...] to use the range from ´01000b´ to ´01111b´
only in order to be compatible with future products."
However, at the moment the drivers sets bandwidth values from 0 to 6,
which is not recommended and always results into 7.81 Hz bandwidth
according to the datasheet.
Fix this by introducing a bw_offset = 8 = 01000b for BMA25x,
so the additional bit is always set for BMA25x.
[1]: https://www.bosch-sensortec.com/media/boschsensortec/downloads/datasheets/bst-bma253-ds000.pdf
[2]: https://datasheet.octopart.com/BMA250-Bosch-datasheet-15540103.pdf
Cc: Peter Meerwald <pmeerw@pmeerw.net>
Fixes: 2017cff24c ("iio:bma180: Add BMA250 chip support")
Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20210526094408.34298-2-stephan@gerhold.net
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Some Yoga laptops with 1 accelerometer in the display and 1 in the base,
use an ACPI HID of DUAL250E instead of BOSC0200.
Set the iio-device's label for DUAL250E devices to a value indicating which
sensor is which, mirroring how we do this for BOSC0200 dual sensor devices.
Note the DUAL250E fwnode unfortunately does not include a mount-matrix.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20210523170103.176958-10-hdegoede@redhat.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Factor the BOSC0200 ACPI HID handling out into a new
bmc150_apply_bosc0200_acpi_orientation() function and make
bmc150_apply_acpi_orientation() call that when dealing with
a BOSC0200 ACPI device (and make it return false otherwise).
This is a preparation patch for adding special handling for other
ACPI HIDs (the "DUAL250E" HID).
Suggested-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20210523170103.176958-9-hdegoede@redhat.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Some 360 degree hinges (yoga) style 2-in-1 devices use 2 bmc150 accels
to allow the OS to determine the angle between the display and the base
of the device, so that the OS can determine if the 2-in-1 is in laptop
or in tablet-mode.
On Windows both accelerometers are read (polled) by a special service
and this service calls the DSM (Device Specific Method), which in turn
translates the angles to one of laptop/tablet/tent/stand mode and then
notifies the EC about the new mode and the EC then enables or disables
the builtin keyboard and touchpad based in the mode.
When the 2-in-1 is powered-on or resumed folded in tablet mode the
EC senses this independent of the DSM by using a HALL effect sensor
which senses that the keyboard has been folded away behind the display.
At power-on or resume the EC disables the keyboard based on this and
the only way to get the keyboard to work after this is to call the
DSM to re-enable it.
Call the DSM on probe() and resume() to fix the keyboard not working
when powered-on / resumed in tablet-mode.
This patch was developed and tested on a Lenovo Yoga 300-IBR.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20210523170103.176958-8-hdegoede@redhat.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Now that the definition of the bmc150_accel_data struct is no longer
private to bmc150-accel-core.c, bmc150-accel-i2c.c can simply directly
access the second_dev member and the accessor functions are no longer
necessary.
Note if the i2c_acpi_new_device() for the second-client now fails,
an ERR_PTR gets stored in data->second_dev this is fine since it is only
ever passed to i2c_unregister_device() which has an IS_ERR_OR_NULL() check.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20210523170103.176958-7-hdegoede@redhat.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Further patches to bmc150-accel-i2c.c need to store some extra info
(on top of the second_dev pointer) in the bmc150_accel_data struct,
rather then adding yet more accessor functions for this lets just
move the struct bmc150_accel_data definition to bmc150-accel.h.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20210523170103.176958-6-hdegoede@redhat.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
The Lenovo Yoga 300-11IBR has a ACPI fwnode with a HID of DUAL250E
which contains I2C and IRQ resources for 2 accelerometers, 1 in the
display and one in the base of the device. Add support for this.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20210523170103.176958-5-hdegoede@redhat.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Move the check for a second ACPI device for BOSC0200 ACPI fwnodes into
a new bmc150_acpi_dual_accel_probe() helper function.
This is a preparation patch for adding support for a new "DUAL250E" ACPI
Hardware-ID (HID) used on some devices.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20210523170103.176958-4-hdegoede@redhat.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
On machines with dual accelerometers described in a single ACPI fwnode,
the bmc150_accel_probe() instantiates a second i2c-client for the second
accelerometer.
A pointer to this manually instantiated second i2c-client is stored
inside the iio_dev's private-data through bmc150_set_second_device(),
so that the i2c-client can be unregistered from bmc150_accel_remove().
Before this commit bmc150_set_second_device() took only 1 argument so it
would store the pointer in private-data of the iio_dev belonging to the
manually instantiated i2c-client, leading to the bmc150_accel_remove()
call for the second_dev trying to unregister *itself* while it was
being removed, leading to a deadlock and rmmod hanging.
Change bmc150_set_second_device() to take 2 arguments: 1. The i2c-client
which is instantiating the second i2c-client for the 2nd accelerometer and
2. The second-device pointer itself (which also is an i2c-client).
This will store the second_device pointer in the private data of the
iio_dev belonging to the (ACPI instantiated) i2c-client for the first
accelerometer and will make bmc150_accel_remove() unregister the
second_device i2c-client when called for the first client,
avoiding the deadlock.
Fixes: 5bfb3a4bd8 ("iio: accel: bmc150: Check for a second ACPI device for BOSC0200")
Cc: Jeremy Cline <jeremy@jcline.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
The drvdata for iio-parent devices points to the struct iio_dev for
the iio-device. So by directly casting the return from i2c_get_clientdata()
to struct bmc150_accel_data * the code was ending up storing the second_dev
pointer in (and retrieving it from) some semi-random offset inside
struct iio_dev, rather then storing it in the second_dev member of the
bmc150_accel_data struct.
Fix the code to get the struct bmc150_accel_data * pointer to call
iio_priv() on the struct iio_dev * returned by i2c_get_clientdata(),
so that the correct pointer gets dereferenced.
This fixes the following oops on rmmod, caused by trying to
dereference the wrong return of bmc150_get_second_device():
[ 238.980737] BUG: unable to handle page fault for address: 0000000000004710
[ 238.980755] #PF: supervisor read access in kernel mode
[ 238.980760] #PF: error_code(0x0000) - not-present page
...
[ 238.980841] i2c_unregister_device.part.0+0x19/0x60
[ 238.980856] 0xffffffffc0815016
[ 238.980863] i2c_device_remove+0x25/0xb0
[ 238.980869] __device_release_driver+0x180/0x240
[ 238.980876] driver_detach+0xd4/0x120
[ 238.980882] bus_remove_driver+0x5b/0xd0
[ 238.980888] i2c_del_driver+0x44/0x70
While at it also remove the now no longer sensible checks for data
being NULL, iio_priv never returns NULL for an iio_dev with non 0
sized private-data.
Fixes: 5bfb3a4bd8 ("iio: accel: bmc150: Check for a second ACPI device for BOSC0200")
Cc: Jeremy Cline <jeremy@jcline.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
0-day recently added the include-what-you-use header checker and
it gave a warning on an adis patch. As such I decided to
run it on all the adis drivers and see if it made sensible suggestions.
Note this doesn't represent a complete list of what it suggested changing
as I filtered out a few on the basis they are standard headers used to
effectively include a bunch of other headers.
Could split this into a patch per driver if people prefer.
Note to anyone else trying this tool is that it is somewhat
of a loose cannon so you will be wanting to carefully check any
suggestions before proposing patches!
I thought about also reorganising the headers whilst here, but
that would make this patch harder to read, or lead to another rather
noisy patch across most of the files.
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Alexandru Ardelean <ardeleanalex@gmail.com>
Link: https://lore.kernel.org/r/20210603193616.3708447-1-jic23@kernel.org
The channels were copied only so that the .ext_info member should become
assignable. We now have compile-time static assignment so drop this code.
Cc: Hans de Goede <hdegoede@redhat.com>
Cc: Denis Ciocca <denis.ciocca@st.com>
Cc: Daniel Drake <drake@endlessm.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20210518230722.522446-3-linus.walleij@linaro.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
The ST accelerators support a special type of quirky mounting matrix found
in ACPI systems, but not a generic mounting matrix such as from the device
tree.
Augment the ACPI hack to be a bit more generic and accept a mounting
matrix from device properties.
This makes it possible to fix orientation on the Ux500 HREF device.
Cc: Hans de Goede <hdegoede@redhat.com>
Cc: Denis Ciocca <denis.ciocca@st.com>
Cc: Daniel Drake <drake@endlessm.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20210518230722.522446-2-linus.walleij@linaro.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
All of the users of iio_read_mount_matrix() are using the very same
property name. Moreover, the property name is hard coded in the API
documentation.
Make this clear and avoid duplication now and in the future.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Sean Nyekjaer <sean@geanix.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20210518112546.44592-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
To make code more readable, use a structure to express the channel
layout and ensure the timestamp is 8 byte aligned.
Found during an audit of all calls of this function.
Fixes: db6a19b825 ("iio: accel: Add trigger support for STK8BA50")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20210501170121.512209-8-jic23@kernel.org
To make code more readable, use a structure to express the channel
layout and ensure the timestamp is 8 byte aligned.
Found during an audit of all calls of this function.
Fixes: 95c12bba51 ("iio: accel: Add buffer mode for Sensortek STK8312")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20210501170121.512209-7-jic23@kernel.org
The bulk read size is based on the size of an array that also has
space for the timestamp alongside the channels.
Fix that and also fix alignment of the buffer passed
to iio_push_to_buffers_with_timestamp.
Found during an audit of all calls to this function.
Fixes: 1ce0eda0f7 ("iio: mxc4005: add triggered buffer mode for mxc4005")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20210501170121.512209-6-jic23@kernel.org
To make code more readable, use a structure to express the channel
layout and ensure the timestamp is 8 byte aligned.
Found during an audit of all calls of this function.
Fixes: 1a4fbf6a92 ("iio: accel: kxcjk1013 3-axis accelerometer driver")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20210501170121.512209-5-jic23@kernel.org
To make code more readable, use a structure to express the channel
layout and ensure the timestamp is 8 byte aligned.
Note this matches what was done in all the other hid sensor drivers.
This one was missed previously due to an extra level of indirection.
Found during an audit of all calls of this function.
Fixes: a96cd0f901 ("iio: accel: hid-sensor-accel-3d: Add timestamp")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20210501170121.512209-4-jic23@kernel.org
To make code more readable, use a structure to express the channel
layout and ensure the timestamp is 8 byte aligned.
Found during an audit of all calls of this function.
Fixes: 194dc4c714 ("iio: accel: Add triggered buffer support for BMA220")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20210501170121.512209-3-jic23@kernel.org
To make code more readable, use a structure to express the channel
layout and ensure the timestamp is 8 byte aligned.
Found during an audit of all calls of this function.
Fixes: b9a6a237ff ("iio:bma180: Drop _update_scan_mode()")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Peter Meerwald <pmeerw@pmeerw.net>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20210501170121.512209-2-jic23@kernel.org
Remove() callback calls pm_runtime_put_noidle() but there it is not
balancing a get. No actual affect because the runtime pm core prevents
the reference count going negative.
Whilst here use pm_runtime_resume_and_get() rather than open coded version.
Again, coccinelle script missed this one due to more complex code
structure.
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Sean Nyekjaer <sean@geanix.com>
Reviewed-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/20210509113354.660190-6-jic23@kernel.org
The call to pm_runtime_put_noidle() in remove() is not balanced by a get so
drop it.
Using pm_runtime_resume_and_get() allows for simple introduction of
error handling to allow for runtime resume failing.
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Mike Looijmans <mike.looijmans@topic.nl>
Reviewed-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/20210509113354.660190-13-jic23@kernel.org
This driver alls pm_runtime_put_noidle() in it's remove function, but there
is no matching get call. This isn't a bug as runtime pm will not allow
the reference counter to go negative, but it is missleading so lets remove
it.
Whilst here use pm_runtime_resume_and_get() to tidy up some boilerplate.
The coccicheck script didn't get this one due to the less obvious
structure. Found by inspection.
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/20210509113354.660190-8-jic23@kernel.org
Both these drivers call pm_runtime_put_no_idle() when the reference
count should already be zero as there is no matching get()
Whilst here use pm_runtime_resume_and_get() rather than open coding.
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/20210509113354.660190-7-jic23@kernel.org
A call to pm_runtime_put_noidle() doesn't match any call that would
result in a get(). It is safe because runtime pm core protects against
the reference counter going 0, but it makes it harder to understand the
code.
Whilst here use pm_runtime_resume_and_get() to tidy things up.
The Coccinelle script didn't get this one due to more complex code
structure.
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/20210509113354.660190-5-jic23@kernel.org
The KX023-1025 accelerometer [1] seems to be some mixture of
KXCJK and KXTF9. It has the motion interrupt functionality from KXCJK
but also the tap detection from KXTF9, and a lot more functionality.
The configuration register map seems fairly different at first,
but actually all register bits used by the kxcjk-1013 driver are
available at the same bit positions on KX023-1025. It's just quite
misleading because:
1. The registers have entirely different names and are at different
addresses, but the bits are mostly named the same (and mean the same).
2. There are many more registers and bits used that are reserved on KXCJK
to enable additional functionality.
Ignoring all additionally available functionality for now, the KX023
works just fine after setting up the struct with the correct register
addresses. The only difference that needs to be handled additionally
is that the KX023 supports two configurable interrupt lines (INT1/2).
For now only INT1 is supported so we route all interrupts used by
the driver there.
[1]: https://kionixfs.azureedge.net/en/datasheet/KX023-1025%20Specifications%20Rev%2012.0.pdf
Cc: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Most Kionix accelerometers seem to use fairly consistent register bits,
but the register addresses are not necessarily the same. This is already
partially the case for the KXTF9 (added in commit 1540d0106b
("iio: accel: kxcjk1013: add support for KXTF9")), which has some
registers at different addresses.
However, it's even much worse for the KX023-1025. All register bits
used by the kxcjk-1013 driver seem to be fully compatible with KX023,
but it has most registers at totally different addresses.
In preparation to add support for KX023-1025, move the fixed register
addresses into a struct so we can change them for KX023 more easily.
Cc: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Cc: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
When flushing the hw fifo there is a bug in the I2C that prevents burst
reads of more than one sample pair.
Signed-off-by: Sean Nyekjaer <sean@geanix.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
When buffered sampling is enabled, the accelerometer will dump data into
the internal fifo and interrupt at watermark. Then the driver flushes
all data to the iio buffer.
As the accelerometer doesn't have internal timestamps, they are
approximated between the current and last interrupt.
Signed-off-by: Sean Nyekjaer <sean@geanix.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Preparation commit for the next that adds hw buffered sampling.
Adds the interrupt function and reads the devicetree for which
interrupt pin that is used.
Signed-off-by: Sean Nyekjaer <sean@geanix.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This adds support for setting de accelerometers output data rate.
Primarily used for hardware buffered reads.
Signed-off-by: Sean Nyekjaer <sean@geanix.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Add basic support for NXP FXLS8962AF/FXLS8964AF Automotive
accelerometers.
It will allow setting up scale/gain and reading x,y,z
axis.
Datasheet: https://www.nxp.com/docs/en/data-sheet/FXLS8962AF.pdf
Datasheet: https://www.nxp.com/docs/en/data-sheet/FXLS8964AF.pdf
Signed-off-by: Sean Nyekjaer <sean@geanix.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
With CONFIG_ACPI=n, W=1 and -Werror, 0-day reports:
drivers/iio/accel/stk8312.c:644:36: error:
'stk8312_acpi_id' defined but not used
Apparently STK8312 is not a valid ACPI ID. Remove the ID table
as this is the only entry. If ACPI support is desired an explicit
of_device_id table should be added (rather than relying on the fallback
to the existing ID table).
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
We can utilize separate drivers for accelerometer and magnetometer,
so here is the glue driver to enable LSM9DS0 IMU support.
The idea was suggested by Crestez Dan Leonard in [1]. The proposed change
was sent as RFC due to race condition concerns, which are indeed possible.
In order to amend the initial change, I went further by providing a specific
multi-instantiate probe driver that reuses existing accelerometer and
magnetometer.
[1]: https://lore.kernel.org/patchwork/patch/670353/
Suggested-by: Crestez Dan Leonard <leonard.crestez@intel.com>
Cc: mr.lahorde@laposte.net
Cc: Matija Podravec <matija_podravec@fastmail.fm>
Cc: Sergey Borishchenko <borischenko.sergey@gmail.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20210414195454.84183-6-andriy.shevchenko@linux.intel.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Some IMUs may utilize existing library code for STMicro accelerometer,
gyroscope, magnetometer and pressure. Let's share them via st_sensors.h.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20210414195454.84183-5-andriy.shevchenko@linux.intel.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
In case we would initialize two IIO devices from one physical device,
we shouldn't have a clash on regulators. That's why move
st_sensors_power_enable() call from core to bus drivers.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20210414195454.84183-4-andriy.shevchenko@linux.intel.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Platform data is solely used by one file. Don't share it with others.
While at it, drop unneeded anymore __maybe_unused and fix kernel doc
to avoid warning:
st_accel_core.c:1079: error: Cannot parse struct or union!
by converting to a simple comment. It is described at the declaration.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20210414195454.84183-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Continuing from Alexandru Ardelean's introduction of the split between
driver modifiable fields and those that should only be set by the core.
This could have been done in two steps to make the actual move after
introducing iio_device_id() but there seemed limited point to that
given how mechanical the majority of the patch is.
Includes fixup from Alex for missing mxs-lradc-adc conversion.
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Alexandru Ardelean <ardeleanalex@gmail.com>
Link: https://lore.kernel.org/r/20210426174911.397061-2-jic23@kernel.org
Stephan Gerhold