Merge tag 'iio-for-3.14b' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next

Jonathan writes:

2nd round of new IIO drivers, features and cleanups for the 3.14 cycle.

New drivers

* HID inclinometer driver.

* DHT11 humidity driver.  Note that previous humidity drivers have been in
  hwmon, but no one was ever entirely happy with that, and they should find
  a more comfortable home in IIO (their original placement in hwmon was my
  fault - oops).  As this is our first humidity driver, core support is also
  added.

New features

* Two of mxs-lradc channels are internally wired to a temperature sensor,
  make this explicit in the driver by providing the relevant temperature
  channel.

* Add support for blocking IO on buffers.

* Add a data_available call back to the interface between buffer implementations
  and the core.  This is much cleaner than the old, 'stufftoread' flag.
  Implemented in the kfifo buffer.

Cleanups

* Last user of the old event configuration interface is converted and the
  old interface dropped.  Nice to be rid of this thanks to Lars-Peter's hard
  work!

* Replace all remaining instances of the IIO_ST macro with explicit filling
  of the scan_type structure within struct iio_chan_spec.  This macro was a
  bad idea, that rapidly ceased to cover all elements of the structure.
  Miss reading of the macro arguements has led to a number of bugs so lets
  just get rid of it. The final removal patch is awaiting for some fixes
  to make their way into mainline.
  In a couple of drivers, no elements of scan_type were even being used so
  in those case, it has been dropped entirely.

* Drop a couple of of_match_ptr helper uses in drivers where devicetree is
  not optional and hence the structures being protected by this always exist.

* Fix up some cases where data was read from a device in a particular
  byte order, but he code placed it into a s16 or similar.  These were
  highlighted by Sparse.

* Use the new ATTRIBUTE_GROUPS macro to drop some boiler plate in the triggers
  core code.

* ad7746 and ad7280a - stop storing buffers on the stack, giving cleaner code
  and possibly avoiding issues with i2c bus drivers that assume they can dma
  directly into the buffer.  Note that this cannot currently happen as the the
  i2c_smbus_read_i2c_block_data function has a memcpy from the buffer actually
  passed to the bus driver.  I missed this element of the commit message
  and don't think it is major enough to rebase the iio tree.

* ad5791 and ad5504 stop storing buffers on the stack for an SPI driver.
  Unlike the i2c drivers, this is a real issue for SPI drivers which can dma
  directly into the buffer supplied.

1 files changed, 29 insertions, 6 deletions

diff --git a/drivers/iio/light/cm36651.c b/drivers/iio/light/cm36651.c
index 0922e39b0ea..0a142af83e2 100644
--- a/drivers/iio/light/cm36651.c
+++ b/drivers/iio/light/cm36651.c
@@ -488,7 +488,11 @@ static int cm36651_write_raw(struct iio_dev *indio_dev,
 }
 
 static int cm36651_read_prox_thresh(struct iio_dev *indio_dev,
-					u64 event_code, int *val)
+					const struct iio_chan_spec *chan,
+					enum iio_event_type type,
+					enum iio_event_direction dir,
+					enum iio_event_info info,
+					int *val, int *val2)
 {
 	struct cm36651_data *cm36651 = iio_priv(indio_dev);
 
@@ -498,7 +502,11 @@ static int cm36651_read_prox_thresh(struct iio_dev *indio_dev,
 }
 
 static int cm36651_write_prox_thresh(struct iio_dev *indio_dev,
-					u64 event_code, int val)
+					const struct iio_chan_spec *chan,
+					enum iio_event_type type,
+					enum iio_event_direction dir,
+					enum iio_event_info info,
+					int val, int val2)
 {
 	struct cm36651_data *cm36651 = iio_priv(indio_dev);
 	struct i2c_client *client = cm36651->client;
@@ -520,7 +528,10 @@ static int cm36651_write_prox_thresh(struct iio_dev *indio_dev,
 }
 
 static int cm36651_write_prox_event_config(struct iio_dev *indio_dev,
-					u64 event_code, int state)
+					const struct iio_chan_spec *chan,
+					enum iio_event_type type,
+					enum iio_event_direction dir,
+					int state)
 {
 	struct cm36651_data *cm36651 = iio_priv(indio_dev);
 	int cmd, ret = -EINVAL;
@@ -536,7 +547,9 @@ static int cm36651_write_prox_event_config(struct iio_dev *indio_dev,
 }
 
 static int cm36651_read_prox_event_config(struct iio_dev *indio_dev,
-							u64 event_code)
+					const struct iio_chan_spec *chan,
+					enum iio_event_type type,
+					enum iio_event_direction dir)
 {
 	struct cm36651_data *cm36651 = iio_priv(indio_dev);
 	int event_en;
@@ -559,12 +572,22 @@ static int cm36651_read_prox_event_config(struct iio_dev *indio_dev,
 	.channel2 = IIO_MOD_LIGHT_##_color,		\
 }							\
 
+static const struct iio_event_spec cm36651_event_spec[] = {
+	{
+		.type = IIO_EV_TYPE_THRESH,
+		.dir = IIO_EV_DIR_EITHER,
+		.mask_separate = BIT(IIO_EV_INFO_VALUE) |
+				BIT(IIO_EV_INFO_ENABLE),
+	}
+};
+
 static const struct iio_chan_spec cm36651_channels[] = {
 	{
 		.type = IIO_PROXIMITY,
 		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
 				BIT(IIO_CHAN_INFO_INT_TIME),
-		.event_mask = IIO_EV_BIT(IIO_EV_TYPE_THRESH, IIO_EV_DIR_EITHER)
+		.event_spec = cm36651_event_spec,
+		.num_event_specs = ARRAY_SIZE(cm36651_event_spec),
 	},
 	CM36651_LIGHT_CHANNEL(RED, CM36651_LIGHT_CHANNEL_IDX_RED),
 	CM36651_LIGHT_CHANNEL(GREEN, CM36651_LIGHT_CHANNEL_IDX_GREEN),
@@ -693,7 +716,7 @@ static const struct of_device_id cm36651_of_match[] = {
 static struct i2c_driver cm36651_driver = {
 	.driver = {
 		.name	= "cm36651",
-		.of_match_table = of_match_ptr(cm36651_of_match),
+		.of_match_table = cm36651_of_match,
 		.owner	= THIS_MODULE,
 	},
 	.probe		= cm36651_probe,