staging: iio: squash chrdev handler remains into users.

[mirror_ubuntu-bionic-kernel.git] / drivers / staging / iio / chrdev.h

diff --git a/drivers/staging/iio/chrdev.h b/drivers/staging/iio/chrdev.h
index 3e31ee6220edab7659371a6cd84473362c217edb..28cce12346a30ba3eb00ac3024e3ea6884b18718 100644 (file)
--- a/drivers/staging/iio/chrdev.h
+++ b/drivers/staging/iio/chrdev.h
@@ -9,26 +9,6 @@
 
 #ifndef _IIO_CHRDEV_H_
 #define _IIO_CHRDEV_H_
-struct iio_dev;
-
-/**
- * struct iio_handler - Structure used to specify file operations
- *                     for a particular chrdev
- * @chrdev:    character device structure
- * @id:                the location in the handler table - used for deallocation.
- * @flags:     file operations related flags including busy flag.
- * @private:   handler specific data used by the fileops registered with
- *             the chrdev.
- */
-struct iio_handler {
-       struct cdev     chrdev;
-       int             id;
-       unsigned long   flags;
-       void            *private;
-};
-
-#define iio_cdev_to_handler(cd)                                \
-       container_of(cd, struct iio_handler, chrdev)
 
 /**
  * struct iio_event_data - The actual event being pushed to userspace
@@ -41,35 +21,5 @@ struct iio_event_data {
        s64     timestamp;
 };
 
-/**
- * struct iio_detected_event_list - list element for events that have occurred
- * @list:              linked list header
- * @ev:                        the event itself
- */
-struct iio_detected_event_list {
-       struct list_head                list;
-       struct iio_event_data           ev;
-};
-
-/**
- * struct iio_event_interface - chrdev interface for an event line
- * @dev:               device assocated with event interface
- * @handler:           fileoperations and related control for the chrdev
- * @wait:              wait queue to allow blocking reads of events
- * @event_list_lock:   mutex to protect the list of detected events
- * @det_events:                list of detected events
- * @max_events:                maximum number of events before new ones are dropped
- * @current_events:    number of events in detected list
- */
-struct iio_event_interface {
-       struct device                           dev;
-       struct iio_handler                      handler;
-       wait_queue_head_t                       wait;
-       struct mutex                            event_list_lock;
-       struct list_head                        det_events;
-       int                                     max_events;
-       int                                     current_events;
-       struct list_head dev_attr_list;
-};
-
+#define IIO_GET_EVENT_FD_IOCTL _IOR('i', 0x90, int)
 #endif