staging:iio:imu:adis16400 move to irq based triggers and channel spec…

… channel registration.

V2: rebase fixup.

Signed-off-by: Jonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/staging/iio/imu/adis16400.h

@@ -126,9 +126,6 @@
 /**
  * struct adis16400_state - device instance specific data
  * @us:			actual spi_device
- * @work_trigger_to_ring: bh for triggered event handling
- * @inter:		used to check if new interrupt has been triggered
- * @last_timestamp:	passing timestamp from th to bh of interrupt handler
  * @indio_dev:		industrial I/O device structure
  * @trig:		data ready trigger registered with iio
  * @tx:			transmit buffer
@@ -137,16 +134,14 @@
  **/
 struct adis16400_state {
 	struct spi_device		*us;
-	struct work_struct		work_trigger_to_ring;
-	s64				last_timestamp;
 	struct iio_dev			*indio_dev;
 	struct iio_trigger		*trig;
 	u8				*tx;
 	u8				*rx;
 	struct mutex			buf_lock;
 };
 
-int adis16400_set_irq(struct device *dev, bool enable);
+int adis16400_set_irq(struct iio_dev *indio_dev, bool enable);
 
 #ifdef CONFIG_IIO_RING_BUFFER
 /* At the moment triggers are only used for ring buffer