linux-toradex.git/drivers/iio/industrialio-buffer.c, branch v3.11

iio: buffer: cleanup messages in iio_update_buffers()

2013-05-22T21:16:47+00:00

1. make messages grepable (in one line)
2. include returned errno in them

Signed-off-by: Michał Mirosław 
Signed-off-by: Jonathan Cameron

staging:iio: Add support for multiple buffers

2012-11-10T10:17:21+00:00

Route all buffer writes through the demux.
Addition or removal of a buffer results in tear down and
setup of all the buffers for a given device.

Signed-off-by: Jonathan Cameron 
Tested-by: srinivas pandruvada

iio: Use strict_strtouint instead of kstrtoul

2012-10-19T17:46:50+00:00

strict_strto* has been deprecated in favor of kstrto*. Use strict_strtouint
respective strict_strtoint, since that is what the functions we pass the
converted values to expect.

Signed-off-by: Lars-Peter Clausen 
Signed-off-by: Jonathan Cameron

iio: Drop timestamp parameter from buffer store_to callback

2012-09-08T09:14:34+00:00

Drop timestamp parameter from buffer store_to callback and subsequently from
iio_push_to_buffer. The timestamp parameter is unused and it seems likely that
it will stay unused in the future, so it should be safe to remove it.

Signed-off-by: Lars-Peter Clausen 
Signed-off-by: Jonathan Cameron

iio: whitespace cleanup and removal of semicolon after functions

2012-09-03T19:26:43+00:00

Signed-off-by: Peter Meerwald 
Signed-off-by: Jonathan Cameron

Merge tag 'togreg-3.6a' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next

2012-07-12T19:29:44+00:00

IIO: One new driver and a couple of nice cleanups.

iio: Introduce iio_validate_scan_mask_onehot

2012-07-09T17:18:15+00:00

Add a helper function for validating a scan mask for devices where exactly one
channel must be selected during sampling. This is a common case among devices
which have scan mask restrictions so it makes sense to provide this function in
the core.

Signed-off-by: Lars-Peter Clausen 
Signed-off-by: Jonathan Cameron

iio: Add callback to check whether a scan mask is valid

2012-07-09T17:18:15+00:00

This is useful for cases where the number of valid scan masks grows
exponentially, but it is rather easy to check whether a mask is valid or not
programmatically.

An example of such a case is a device with multiple ADCs where each ADC has a
upstream MUX, which allows to select from a number of physical channels.

  +-------+   +-------+
  |       |   |       | --- Channel 1
  | ADC 1 |---| MUX 1 | ---   ...
  |       |   |       | --- Channel M
  +-------+   +-------+

     .            .            .
     .            .            .
     .            .            .

  +-------+   +-------+
  |       |   |       | --- Channel M * N + 1
  | ADC N |---| MUX N | ---       ...
  |       |   |       | --- Channel M * N + M
  +-------+   +-------+

The number of necessary scan masks for this case is (M+1)**N - 1, on the other
hand it is easy to check whether subsets for each ADC of the scanmask have only
one bit set.

Signed-off-by: Lars-Peter Clausen 
Signed-off-by: Jonathan Cameron

iio: iio_buffer_register: Use correct channel when calculating masklength

2012-07-08T19:02:23+00:00

The channel set assigned to the iio device is not necessarily the same has the
channel set passed to iio_buffer_register. So to avoid possible complications
always work with the channel set pass to iio_buffer_register and ignore the
channel set assigned to the iio device.

Signed-off-by: Lars-Peter Clausen 
Signed-off-by: Jonathan Cameron

iio: iio_buffer_register: Skip channels with negative scan index

2012-06-19T00:26:09+00:00

It is not always the case that all channels can be used in buffered mode. This
patch allows channels, which can not be used in buffered mode, to set their scan
index to a negative number, which will cause iio_buffer_register to ignore the
channel.

Signed-off-by: Lars-Peter Clausen 
Acked-by: Jonathan Cameron 
Signed-off-by: Greg Kroah-Hartman