linux.git/drivers/staging/iio/resolver, branch v5.5

staging: iio: ad2s1210: Use device-managed API

2019-07-27T21:52:06+00:00

Use device-managed API to simplify the code.
The remove function is redundant now and can
be deleted.

Signed-off-by: Chuhong Yuan 
Reviewed-by: Alexandru Ardelean 
Signed-off-by: Jonathan Cameron

staging: iio: ad2s1210: Remove platform data NULL check in probe

2019-06-17T20:06:43+00:00

The driver only needs to access GPIOs via GPIOLIB. And SPI can be
configured via device-tree or ACPI.

The platform data is a remnant from another time, and should not cause the
driver to error out during probing if it is NULL.
Also, it's not used.

Signed-off-by: Alexandru Ardelean 
Signed-off-by: Jonathan Cameron

staging: iio: add proper SPDX identifiers to remaining driver files

2019-04-03T09:10:17+00:00

There are a number of IIO staging drivers that do not have a proper SPDX
identifier on it.  So fix that up and at the same time, remove the "free
form" license text, as that's pretty much impossible for any tool to
parse.

Cc: Lars-Peter Clausen 
Cc: Michael Hennerich 
Cc: Jonathan Cameron 
Cc: Hartmut Knaack 
Cc: Peter Meerwald-Stadler 
Signed-off-by: Greg Kroah-Hartman

staging: add missing SPDX lines to Makefile files

2019-04-03T09:10:15+00:00

There are a few remaining drivers/staging/*/Makefile files that do not
have SPDX identifiers in them.  Add the correct GPL-2.0 identifier to
them to make scanning tools happy.

Reviewed-by: Mukesh Ojha 
Signed-off-by: Greg Kroah-Hartman

staging: add missing SPDX lines to Kconfig files

2019-04-03T09:10:15+00:00

There are a few remaining drivers/staging/*/Kconfig files that do not
have SPDX identifiers in them.  Add the correct GPL-2.0 identifier to
them to make scanning tools happy.

Signed-off-by: Greg Kroah-Hartman

staging:iio:ad2s90: Move out of staging

2018-12-01T15:40:39+00:00

Move ad2s90 resolver driver out of staging to the main tree.

Signed-off-by: Matheus Tavares 
Signed-off-by: Victor Colombo 
Acked-by: Alexandru Ardelean 
Signed-off-by: Jonathan Cameron

staging:iio:ad2s90: Add comment to device state mutex

2018-12-01T15:40:22+00:00

Fix the checkpatch.pl issue:
"CHECK: struct mutex definition without comment".

Signed-off-by: Victor Colombo 
Signed-off-by: Matheus Tavares 
Acked-by: Alexandru Ardelean 
Signed-off-by: Jonathan Cameron

staging:iio:ad2s90: Replace license text w/ SPDX identifier

2018-12-01T15:38:01+00:00

This patch removes the license boilerplate text at the top of ad2s90.c
and, instead, adds the SPDX GPL-2.0 license identifier, which solves the
checkpatch.pl warning:
"WARNING: Missing or malformed SPDX-License-Identifier tag in line 1".

Signed-off-by: Matheus Tavares 
Acked-by: Alexandru Ardelean 
Signed-off-by: Jonathan Cameron

staging:iio:ad2s90: Add max frequency check at probe

2018-12-01T15:35:33+00:00

This patch adds a max frequency check at the beginning of ad2s90_probe
function so that when it is set to a value above 0.83Mhz, dev_err is
called with an appropriate message and -EINVAL is returned.

The defined limit is 0.83Mhz instead of 2Mhz, which is the chip's max
frequency as specified in the datasheet, because, as also specified in
the datasheet, a 600ns delay is expected between the application of a
logic LO to CS and the application of SCLK. Since the delay is not
implemented in the spi code, to satisfy it, SCLK's period should be at
most 2 * 600ns, so the max frequency should be 1 / (2 * 6e-7), which
gives roughly 830000Hz.

Signed-off-by: Alexandru Ardelean 
Signed-off-by: Matheus Tavares 
Signed-off-by: Jonathan Cameron

staging:iio:ad2s90: Remove spi setup that should be done via dt

2018-12-01T15:35:25+00:00

The ad2s90 driver currently sets some spi settings (max_speed_hz and
mode) at ad2s90_probe. Since the maximum frequency is a required element
in DT binding for spi slave devices and because the spi mode for the
device can be either (0,0) or (1,1), these settings should be handled
via device tree, not in the driver's code. This patch removes them from
the probe function.

Note: The way in which the mentioned spi settings need to be specified
on the ad2s90's node of a device tree will be documented in the future
patch "dt-bindings:iio:resolver: Add docs for ad2s90".

Signed-off-by: Matheus Tavares 
Acked-by: Alexandru Ardelean 
Signed-off-by: Jonathan Cameron