linux-toradex.git/include/linux/iio, branch v3.6.1

iio: frequency: ADF4350: Fix potential reference div factor overflow.

2012-08-16T19:24:33+00:00

With small channel spacing values and high reference frequencies it is
possible to exceed the range of the 10-bit counter.
Workaround by checking the range and widening some constrains.

We don't use the REG1_PHASE value in this case the datasheet recommends to set
it to 1 if not used.

Signed-off-by: Michael Hennerich 
Signed-off-by: Jonathan Cameron

IIO channel type and modifiers for CCT and RGBC data

2012-07-10T17:49:26+00:00

Add iio channel type and modifiers for Correlated Color Temperature (CCT)
and RGBC (red/green/blue/clear) data.
Add CCT and RGBC descriptions to documentation.

Changes:
Revised/condensed RGBC descriptions.

Merge and trivial fix done by Jonathan Cameron.

Signed-off-by: Jon Brenner 
Signed-off-by: Jonathan Cameron

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: cleanup buffer.h comments

2012-07-07T15:52:19+00:00

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

IIO: Add a modifier for x^2+y^2+z^2

2012-06-30T09:15:28+00:00

There will probably be a number of such modifiers eventually but
this one is used in the adis16240 accelerometer driver.

Signed-off-by: Jonathan Cameron

IIO: Add a modifier for sqrt(x^2+y^2)

2012-06-30T09:15:22+00:00

There will probably be a number of such modifiers eventually but
this one is used in the adis16204 accelerometer driver.

Signed-off-by: Jonathan Cameron

iio: Rename _st_ functions to loose the bit that meant the staging version.

2012-06-30T09:15:12+00:00

These were originally introduced when the plan was to have parallel
IIO cores in and out of staging with a slow move between them.
Now we have reached the point where the whole core has moved,
they need clearing up!

Signed-off-by: Jonathan Cameron

iio: remove extra ; after function definition

2012-06-19T00:31:42+00:00

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

iio: correct documentation for IIO_CONST_ATTR_SAMP_FREQ_AVAIL, match name of #define

2012-06-19T00:31:42+00:00

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