talos-op-linux/include/linux/iio/iio.h, branch v3.7

iio: Add some helper macros for unit conversion

2012-10-19T15:12:38+00:00

Some datasheets use a different unit to specify the channel scale than what IIO expects it to be. This patch adds two helper macros which allow to convert units commonly used in datasheets to IIO units: * acceleration: g -> meter / second**2 * angular velocity: degree (/ second) -> rad (/ second) This makes it much more convenient to specify and also easier to verify a channel's scale attribute. Signed-off-by: Lars-Peter Clausen Signed-off-by: Jonathan Cameron

iio:inkern: Add function to read the processed value

2012-09-17T20:48:51+00:00

Add a function to read a processed value from a channel. The function will first attempt to read the IIO_CHAN_INFO_PROCESSED attribute. If that fails it will read the IIO_CHAN_INFO_RAW attribute and convert the result from a raw value to a processed value. The patch also introduces a function to convert raw value to a processed value and exports it, in case a user needs or wants to do the conversion by itself. Signed-off-by: Lars-Peter Clausen Signed-off-by: Jonathan Cameron

iio: core: Add hysteresis in channel spec

2012-09-06T18:04:45+00:00

Added hysteresis to the list of channel info enumeration, shared /separate bit defines and to postfix channel info strings. Signed-off-by: srinivas pandruvada 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

iio: fix typos

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

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

iio: document missing elements

2012-09-03T19:26:42+00:00

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

iio: Introduce iio_device_{set,get}_drvdata()

2012-08-27T16:52:26+00:00

Introduce two new helper functions to attach a arbitrary pointer to a IIO device. This is useful to get access to external non-global data from within a IIO device callbacks where only the IIO device is available. Internally these functions use dev_{set,get}_drvdata() on the struct device embedded in the IIO device. 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: typo in iio_chan_spec.ext_info comment

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

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

iio: cleanup iio/iio.h

2012-06-12T21:53:31+00:00

indentation of parameter description, fix parameter name (@dev -> @indio_dev) in comments, IIO device info structure -> IIO device structure Signed-off-by: Peter Meerwald Acked-by: Jonathan Cameron Signed-off-by: Greg Kroah-Hartman