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authorJonathan Cameron <jic23@kernel.org>2012-04-25 18:54:59 +0400
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2012-04-25 22:11:38 +0400
commita980e046098b0a40eaff5e4e7fcde6cf035b7c06 (patch)
tree23375fc2bba39f088974cf621f7abf006d43d087 /drivers/iio/iio_core.h
parent06458e277eac2b8761b0a04d3c808d57be281a2e (diff)
downloadlinux-a980e046098b0a40eaff5e4e7fcde6cf035b7c06.tar.xz
IIO: Move the core files to drivers/iio
Take the core support + the kfifo buffer implentation out of staging. Whilst we are far from done in improving this subsystem it is now at a stage where the userspae interfaces (provided by the core) can be considered stable. Drivers will follow over a longer time scale. Signed-off-by: Jonathan Cameron <jic23@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/iio/iio_core.h')
-rw-r--r--drivers/iio/iio_core.h62
1 files changed, 62 insertions, 0 deletions
diff --git a/drivers/iio/iio_core.h b/drivers/iio/iio_core.h
new file mode 100644
index 000000000000..f652e6ae5a35
--- /dev/null
+++ b/drivers/iio/iio_core.h
@@ -0,0 +1,62 @@
+/* The industrial I/O core function defs.
+ *
+ * Copyright (c) 2008 Jonathan Cameron
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ *
+ * These definitions are meant for use only within the IIO core, not individual
+ * drivers.
+ */
+
+#ifndef _IIO_CORE_H_
+#define _IIO_CORE_H_
+#include <linux/kernel.h>
+#include <linux/device.h>
+
+struct iio_chan_spec;
+struct iio_dev;
+
+
+int __iio_add_chan_devattr(const char *postfix,
+ struct iio_chan_spec const *chan,
+ ssize_t (*func)(struct device *dev,
+ struct device_attribute *attr,
+ char *buf),
+ ssize_t (*writefunc)(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf,
+ size_t len),
+ u64 mask,
+ bool generic,
+ struct device *dev,
+ struct list_head *attr_list);
+
+/* Event interface flags */
+#define IIO_BUSY_BIT_POS 1
+
+#ifdef CONFIG_IIO_BUFFER
+struct poll_table_struct;
+
+unsigned int iio_buffer_poll(struct file *filp,
+ struct poll_table_struct *wait);
+ssize_t iio_buffer_read_first_n_outer(struct file *filp, char __user *buf,
+ size_t n, loff_t *f_ps);
+
+
+#define iio_buffer_poll_addr (&iio_buffer_poll)
+#define iio_buffer_read_first_n_outer_addr (&iio_buffer_read_first_n_outer)
+
+#else
+
+#define iio_buffer_poll_addr NULL
+#define iio_buffer_read_first_n_outer_addr NULL
+
+#endif
+
+int iio_device_register_eventset(struct iio_dev *indio_dev);
+void iio_device_unregister_eventset(struct iio_dev *indio_dev);
+int iio_event_getfd(struct iio_dev *indio_dev);
+
+#endif