kernel/linux.git/include/linux/iio/iio.h, branch v3.6.3

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

iio: mark struct iio_enum elements with @ in comment

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

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

iio: clarify channel and indexed in struct iio_chan_spec

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

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

iio: fix typos in iio.h

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

v2: * "used in in-kernel" (Jonathan Cameron) Signed-off-by: Peter Meerwald Acked-by: Jonathan Cameron Signed-off-by: Greg Kroah-Hartman

iio: Add helper functions for enum style channel attributes

2012-06-05T04:47:29+00:00

We often have the case were we do have a enum style channel attribute. These attributes have in common that they are a list of string values which usually map in a 1-to-1 fashion to integer values. This patch implements some common helper code for implementing enum style channel attributes using extended channel attributes. The helper functions take care of converting between the string and integer values, as well providing a function for "_available" attributes which list all available enum items. Signed-off-by: Lars-Peter Clausen Acked-by: Jonathan Cameron Signed-off-by: Greg Kroah-Hartman

iio: Add iio_device_get()

2012-06-05T04:21:29+00:00

This patch add the iio_device_get() function, which increases the reference count of a iio device. The matching function to decrease the reference count - iio_device_put() - already exists. Signed-off-by: Lars-Peter Clausen Acked-by: Jonathan Cameron Signed-off-by: Greg Kroah-Hartman

iio: Add dev_to_iio_dev() helper function

2012-05-14T20:34:31+00:00

This patch adds a helper function for retriving a iio_dev struct from a device struct. Currently we open-code this in two different ways. One is using dev_get_drvdata on the device and the other is using container_of. The new helper function uses the container_of solution as it creates slightly smaller code and also will eventually free up the drvdata pointer for usage by invidual drivers. Signed-off-by: Lars-Peter Clausen Acked-by: Jonathan Cameron Signed-off-by: Greg Kroah-Hartman

iio: core: introduce IIO_CHAN_INFO_HARDWAREGAIN

2012-05-14T20:15:39+00:00

Signed-off-by: Michael Hennerich Acked-by: Jonathan Cameron Signed-off-by: Greg Kroah-Hartman