linux-stable.git/drivers/staging/iio, branch linux-4.20.y

staging: iio: ad7780: update voltage on read

2019-02-12T19:02:08+00:00

[ Upstream commit 336650c785b62c3bea7c8cf6061c933a90241f67 ]

The ad7780 driver previously did not read the correct device output, as
it read an outdated value set at initialization. It now updates its
voltage on read.

Signed-off-by: Renato Lui Geh 
Acked-by: Alexandru Ardelean 
Signed-off-by: Jonathan Cameron 
Signed-off-by: Sasha Levin

staging:iio:ad2s90: Make probe handle spi_setup failure

2019-02-12T19:02:07+00:00

[ Upstream commit b3a3eafeef769c6982e15f83631dcbf8d1794efb ]

Previously, ad2s90_probe ignored the return code from spi_setup, not
handling its possible failure. This patch makes ad2s90_probe check if
the code is an error code and, if so, do the following:

- Call dev_err with an appropriate error message.
- Return the spi_setup's error code.

Note: The 'return ret' statement could be out of the 'if' block, but
this whole block will be moved up in the function in the patch:
'staging:iio:ad2s90: Move device registration to the end of probe'.

Signed-off-by: Matheus Tavares 
Signed-off-by: Jonathan Cameron 
Signed-off-by: Sasha Levin

staging: iio: adc: ad7280a: handle error from __ad7280_read32()

2019-02-12T19:02:04+00:00

[ Upstream commit 0559ef7fde67bc6c83c6eb6329dbd6649528263e ]

Inside __ad7280_read32(), the spi_sync_transfer() can fail with negative
error code. This change will ensure that this error is being passed up
in the call stack, so it can be handled.

Signed-off-by: Slawomir Stepien 
Signed-off-by: Jonathan Cameron 
Signed-off-by: Sasha Levin

Merge tag 'staging-4.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging

2018-10-29T17:38:10+00:00

Pull staging/IIO driver updates from Greg KH:
 "Here is the big staging and IIO driver pull request for 4.20-rc1.

  There are lots of things here, we ended up adding more lines than
  removing, thanks to a large influx of Comedi National Instrument
  device support. Someday soon we need to get comedi out of staging...

  Other than the comedi drivers, the "big" things here are:

   - new iio drivers

   - delete dgnc driver (no one used it and no one had the hardware
     anymore)

   - vbox driver updates and fixes

   - erofs fixes

   - tons and tons of tiny checkpatch fixes for almost all staging
     drivers

  All of these have been in linux-next, with the last few happening a
  bit "late" due to them getting stuck on my laptop during travel to the
  Mantainers summit"

* tag 'staging-4.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (690 commits)
  staging: gasket: Fix sparse "incorrect type in assignment" warnings.
  staging: gasket: remove debug logs for callback invocation
  staging: gasket: remove debug logs in page table mapping calls
  staging: rtl8188eu: core: Use sizeof(*p) instead of sizeof(struct P) for memory allocation
  staging: ks7010: Remove extra blank line
  staging: gasket: Remove extra blank line
  staging: media: davinci_vpfe: Fix spelling mistake in enum
  staging: speakup: Add a pair of braces
  staging: wlan-ng: Replace long int with long
  staging: MAINTAINERS: remove obsolete IPX staging directory
  staging: MAINTAINERS: remove NCP filesystem entry
  staging: rtl8188eu: cleanup comparsions to false
  staging: gasket: Update device virtual address comment
  staging: gasket: sysfs: fix attribute release comment
  staging: gasket: apex: fix sysfs_show
  staging: gasket: page_table: simplify gasket_components_to_dev_address
  staging: gasket: page_table: fix comment in components_to_dev_address
  staging: gasket: page table: fixup error path allocating coherent mem
  staging: gasket: page_table: rearrange gasket_page_table_entry
  staging: gasket: page_table: remove unnecessary PTE status set to free
  ...

staging:iio:ad7606: Add support for the ad7605-4

2018-09-22T15:42:57+00:00

Add support for the AD7605-4 to the AD7606 driver. The AD7605-4 is mostly
interface compatible to the AD7606-6 with the only difference being not
having support for oversampling.

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

staging:iio:ad7606: update structs with doc annotations

2018-09-22T13:45:40+00:00

The current structs are only partially documented via annotations. This
change updates annotations for all structs in the ad7606.h file.

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

staging:iio:ad7606: Remove incorrect kernel doc annotations

2018-09-16T11:18:36+00:00

The ad7606_chip_info struct does not have the lock & name fields. Remove
the kernel documentation annotations for it.

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

staging:iio:ad7606: fix voltage scales

2018-09-16T11:18:20+00:00

Fixes commit 17be2a2905a6ec9aa27cd59521495e2f490d2af0 ("staging: iio:
ad7606: replace range/range_available with corresponding scale").

The AD7606 devices don't have a 2.5V voltage range, they have 5V & 10V
voltage range, which is selectable via the `gpio_range` descriptor.

The scales also seem to have been miscomputed, because when they were
applied to the raw values, the results differ from the expected values.
After checking the ADC transfer function in the datasheet, these were
re-computed.

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

gpiolib: Pass array info to get/set array functions

2018-09-13T09:16:54+00:00

In order to make use of array info obtained from gpiod_get_array() and
speed up processing of arrays matching single GPIO chip layout, that
information must be passed to get/set array functions.  Extend the
functions' API with that additional parameter and update all users.
Pass NULL if a user builds an array itself from single GPIOs.

Cc: Jonathan Corbet 
Cc: Miguel Ojeda Sandonis 
Cc: Geert Uytterhoeven 
Cc: Sebastien Bourdelin 
Cc: Lukas Wunner 
Cc: Peter Korsgaard 
Cc: Peter Rosin 
Cc: Andrew Lunn 
Cc: Florian Fainelli 
Cc: "David S. Miller" 
Cc: Rojhalat Ibrahim 
Cc: Dominik Brodowski 
Cc: Russell King 
Cc: Kishon Vijay Abraham I 
Cc: Tony Lindgren 
Cc: Lars-Peter Clausen 
Cc: Michael Hennerich 
Cc: Jonathan Cameron 
Cc: Hartmut Knaack 
Cc: Peter Meerwald-Stadler 
Cc: Greg Kroah-Hartman 
Cc: Jiri Slaby 
Cc: Yegor Yefremov 
Cc: Uwe Kleine-König 
Signed-off-by: Janusz Krzysztofik 
Acked-by: Ulf Hansson 
Signed-off-by: Linus Walleij

gpiolib: Pass bitmaps, not integer arrays, to get/set array

2018-09-13T09:15:30+00:00

Most users of get/set array functions iterate consecutive bits of data,
usually a single integer, while processing array of results obtained
from, or building an array of values to be passed to those functions.
Save time wasted on those iterations by changing the functions' API to
accept bitmaps.

All current users are updated as well.

More benefits from the change are expected as soon as planned support
for accepting/passing those bitmaps directly from/to respective GPIO
chip callbacks if applicable is implemented.

Cc: Jonathan Corbet 
Cc: Miguel Ojeda Sandonis 
Cc: Sebastien Bourdelin 
Cc: Lukas Wunner 
Cc: Peter Korsgaard 
Cc: Peter Rosin 
Cc: Andrew Lunn 
Cc: Florian Fainelli 
Cc: "David S. Miller" 
Cc: Rojhalat Ibrahim 
Cc: Dominik Brodowski 
Cc: Russell King 
Cc: Kishon Vijay Abraham I 
Cc: Tony Lindgren 
Cc: Lars-Peter Clausen 
Cc: Michael Hennerich 
Cc: Jonathan Cameron 
Cc: Hartmut Knaack 
Cc: Peter Meerwald-Stadler 
Cc: Greg Kroah-Hartman 
Cc: Jiri Slaby 
Cc: Yegor Yefremov 
Cc: Uwe Kleine-König 
Signed-off-by: Janusz Krzysztofik 
Acked-by: Ulf Hansson 
Reviewed-by: Geert Uytterhoeven 
Tested-by: Geert Uytterhoeven 
Signed-off-by: Linus Walleij