staging:iio:buffer move setup ops from buffer instance to iio_dev

[cascardo/linux.git] / drivers / staging / iio / iio.h

diff --git a/drivers/staging/iio/iio.h b/drivers/staging/iio/iio.h
index 11c2f25..45b6d75 100644 (file)
--- a/drivers/staging/iio/iio.h
+++ b/drivers/staging/iio/iio.h
@@ -271,6 +271,21 @@ struct iio_info {
                                const unsigned long *scan_mask);
 };
 
+/**
+ * struct iio_buffer_setup_ops - buffer setup related callbacks
+ * @preenable:         [DRIVER] function to run prior to marking buffer enabled
+ * @postenable:                [DRIVER] function to run after marking buffer enabled
+ * @predisable:                [DRIVER] function to run prior to marking buffer
+ *                     disabled
+ * @postdisable:       [DRIVER] function to run after marking buffer disabled
+ */
+struct iio_buffer_setup_ops {
+       int                             (*preenable)(struct iio_dev *);
+       int                             (*postenable)(struct iio_dev *);
+       int                             (*predisable)(struct iio_dev *);
+       int                             (*postdisable)(struct iio_dev *);
+};
+
 /**
  * struct iio_dev - industrial I/O device
  * @id:                        [INTERN] used to identify device internally
@@ -324,6 +339,7 @@ struct iio_dev {
        struct attribute_group          chan_attr_group;
        const char                      *name;
        const struct iio_info           *info;
+       const struct iio_buffer_setup_ops       *setup_ops;
        struct cdev                     chrdev;
 #define IIO_MAX_GROUPS 6
        const struct attribute_group    *groups[IIO_MAX_GROUPS + 1];