7 Commits

Author SHA1 Message Date
Matti Vaittinen
1402913c92 iio: mb1232: relax return value check for IRQ get
fwnode_irq_get() was changed to not return 0 anymore.

Drop check for return value 0.

Signed-off-by: Matti Vaittinen <mazziesaccount@gmail.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/9e18cf49a8bb581a84c3fa548ea577e2a3eb840d.1690890774.git.mazziesaccount@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2023-08-01 18:55:46 +01:00
Uwe Kleine-König
7cf15f4275 iio: Switch i2c drivers back to use .probe()
After commit b8a1a4cd5a98 ("i2c: Provide a temporary .probe_new()
call-back type"), all drivers being converted to .probe_new() and then
03c835f498b5 ("i2c: Switch .probe() to not take an id parameter") convert
back to (the new) .probe() to be able to eventually drop .probe_new() from
struct i2c_driver.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Link: https://lore.kernel.org/r/20230515205048.19561-1-u.kleine-koenig@pengutronix.de
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2023-05-21 18:54:53 +01:00
Uwe Kleine-König
5c5c482e02 iio: proximity: mb1232: Convert to i2c's .probe_new()
.probe_new() doesn't get the i2c_device_id * parameter, so determine
that explicitly in the probe function.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20221118224540.619276-181-uwe@kleine-koenig.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2022-11-23 20:20:31 +00:00
Andy Shevchenko
06f90dd492 iio: proximity: mb1232: Switch to use fwnode_irq_get()
We have OF-centric variant of fwnode_irq_get() in the driver.
Replace it with a call to an agnostic implementation.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Andreas Klinger <ak@it-klinger.de>
Link: https://lore.kernel.org/r/20220413183123.20292-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2022-04-28 19:28:41 +01:00
Jonathan Cameron
f60e8bb842 iio:proximity:mb1232: Fix timestamp alignment and prevent data leak.
One of a class of bugs pointed out by Lars in a recent review.
iio_push_to_buffers_with_timestamp assumes the buffer used is aligned
to the size of the timestamp (8 bytes).  This is not guaranteed in
this driver which uses a 16 byte s16 array on the stack   As Lars also noted
this anti pattern can involve a leak of data to userspace and that
indeed can happen here.  We close both issues by moving to
a suitable structure in the iio_priv() data with alignment
ensured by use of an explicit c structure.  This data is allocated
with kzalloc so no data can leak appart from previous readings.

In this case the forced alignment of the ts is necessary to ensure
correct padding on x86_32 where the s64 would only be 4 byte aligned.

Fixes: 16b05261537e ("mb1232.c: add distance iio sensor with i2c")
Reported-by: Lars-Peter Clausen <lars@metafoo.de>
Cc: Andreas Klinger <ak@it-klinger.de>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: <Stable@vger.kernel.org>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
2020-08-22 11:38:54 +01:00
Alexandru Ardelean
d3be83244c iio: remove explicit IIO device parent assignment
This patch applies the semantic patch:
@@
expression I, P, SP;
@@
   I = devm_iio_device_alloc(P, SP);
   ...
-  I->dev.parent = P;

It updates 302 files and does 307 deletions.
This semantic patch also removes some comments like
'/* Establish that the iio_dev is a child of the i2c device */'

But this is is only done in case where the block is left empty.

The patch does not seem to cover all cases. It looks like in some cases a
different variable is used in some cases to assign the parent, but it
points to the same reference.
In other cases, the block covered by ... may be just too big to be covered
by the semantic patch.

However, this looks pretty good as well, as it does cover a big bulk of the
drivers that should remove the parent assignment.

Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-06-14 11:49:59 +01:00
Andreas Klinger
16b0526153 mb1232.c: add distance iio sensor with i2c
Add I2CXL-MaxSonar ultrasonic distance sensors of types mb1202, mb1212,
mb1222, mb1232, mb1242, mb7040, mb7137 using an i2c interface

Implemented functionality:
- reading the distance via in_distance_raw
- buffered mode with trigger
- make use of interrupt to announce completion of ranging

Add mb1232 driver to Kconfig and Makefile

Signed-off-by: Andreas Klinger <ak@it-klinger.de>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-04 20:20:17 +01:00