1<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>struct iio_dev</title><meta name="generator" content="DocBook XSL Stylesheets V1.78.1"><link rel="home" href="index.html" title="Industrial I/O driver developer's guide"><link rel="up" href="iiosubsys.html#iiodevice" title="Industrial I/O devices"><link rel="prev" href="iiosubsys.html" title="Chapter 2. Industrial I/O core"><link rel="next" href="API-iio-device-alloc.html" title="iio_device_alloc"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"><span class="phrase">struct iio_dev</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="iiosubsys.html">Prev</a> </td><th width="60%" align="center"> Industrial I/O devices </th><td width="20%" align="right"> <a accesskey="n" href="API-iio-device-alloc.html">Next</a></td></tr></table><hr></div><div class="refentry"><a name="API-struct-iio-dev"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>struct iio_dev — 
2  industrial I/O device
3 </p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><pre class="programlisting">
4struct iio_dev {
5  int id;
6  int modes;
7  int currentmode;
8  struct device dev;
9  struct iio_event_interface * event_interface;
10  struct iio_buffer * buffer;
11  struct list_head buffer_list;
12  int scan_bytes;
13  struct mutex mlock;
14  const unsigned long * available_scan_masks;
15  unsigned masklength;
16  const unsigned long * active_scan_mask;
17  bool scan_timestamp;
18  unsigned scan_index_timestamp;
19  struct iio_trigger * trig;
20  struct iio_poll_func * pollfunc;
21  struct iio_poll_func * pollfunc_event;
22  struct iio_chan_spec const * channels;
23  int num_channels;
24  struct list_head channel_attr_list;
25  struct attribute_group chan_attr_group;
26  const char * name;
27  const struct iio_info * info;
28  struct mutex info_exist_lock;
29  const struct iio_buffer_setup_ops * setup_ops;
30  struct cdev chrdev;
31#define IIO_MAX_GROUPS 6
32  const struct attribute_group * groups[IIO_MAX_GROUPS + 1];
33  int groupcounter;
34  unsigned long flags;
35#if defined(CONFIG_DEBUG_FS)
36  struct dentry * debugfs_dentry;
37  unsigned cached_reg_addr;
38#endif
39};  </pre></div><div class="refsect1"><a name="id-1.4.3.2.5"></a><h2>Members</h2><div class="variablelist"><dl class="variablelist"><dt><span class="term">id</span></dt><dd><p>
40[INTERN] used to identify device internally
41      </p></dd><dt><span class="term">modes</span></dt><dd><p>
42[DRIVER] operating modes supported by device
43      </p></dd><dt><span class="term">currentmode</span></dt><dd><p>
44[DRIVER] current operating mode
45      </p></dd><dt><span class="term">dev</span></dt><dd><p>
46[DRIVER] device structure, should be assigned a parent
47and owner
48      </p></dd><dt><span class="term">event_interface</span></dt><dd><p>
49[INTERN] event chrdevs associated with interrupt lines
50      </p></dd><dt><span class="term">buffer</span></dt><dd><p>
51[DRIVER] any buffer present
52      </p></dd><dt><span class="term">buffer_list</span></dt><dd><p>
53[INTERN] list of all buffers currently attached
54      </p></dd><dt><span class="term">scan_bytes</span></dt><dd><p>
55[INTERN] num bytes captured to be fed to buffer demux
56      </p></dd><dt><span class="term">mlock</span></dt><dd><p>
57[INTERN] lock used to prevent simultaneous device state
58changes
59      </p></dd><dt><span class="term">available_scan_masks</span></dt><dd><p>
60[DRIVER] optional array of allowed bitmasks
61      </p></dd><dt><span class="term">masklength</span></dt><dd><p>
62[INTERN] the length of the mask established from
63channels
64      </p></dd><dt><span class="term">active_scan_mask</span></dt><dd><p>
65[INTERN] union of all scan masks requested by buffers
66      </p></dd><dt><span class="term">scan_timestamp</span></dt><dd><p>
67[INTERN] set if any buffers have requested timestamp
68      </p></dd><dt><span class="term">scan_index_timestamp</span></dt><dd><p>
69[INTERN] cache of the index to the timestamp
70      </p></dd><dt><span class="term">trig</span></dt><dd><p>
71[INTERN] current device trigger (buffer modes)
72      </p></dd><dt><span class="term">pollfunc</span></dt><dd><p>
73[DRIVER] function run on trigger being received
74      </p></dd><dt><span class="term">pollfunc_event</span></dt><dd><p>
75[DRIVER] function run on events trigger being received
76      </p></dd><dt><span class="term">channels</span></dt><dd><p>
77[DRIVER] channel specification structure table
78      </p></dd><dt><span class="term">num_channels</span></dt><dd><p>
79[DRIVER] number of channels specified in <em class="parameter"><code>channels</code></em>.
80      </p></dd><dt><span class="term">channel_attr_list</span></dt><dd><p>
81[INTERN] keep track of automatically created channel
82attributes
83      </p></dd><dt><span class="term">chan_attr_group</span></dt><dd><p>
84[INTERN] group for all attrs in base directory
85      </p></dd><dt><span class="term">name</span></dt><dd><p>
86[DRIVER] name of the device.
87      </p></dd><dt><span class="term">info</span></dt><dd><p>
88[DRIVER] callbacks and constant info from driver
89      </p></dd><dt><span class="term">info_exist_lock</span></dt><dd><p>
90[INTERN] lock to prevent use during removal
91      </p></dd><dt><span class="term">setup_ops</span></dt><dd><p>
92[DRIVER] callbacks to call before and after buffer
93enable/disable
94      </p></dd><dt><span class="term">chrdev</span></dt><dd><p>
95[INTERN] associated character device
96      </p></dd><dt><span class="term">groups[IIO_MAX_GROUPS + 1]</span></dt><dd><p>
97[INTERN] attribute groups
98      </p></dd><dt><span class="term">groupcounter</span></dt><dd><p>
99[INTERN] index of next attribute group
100      </p></dd><dt><span class="term">flags</span></dt><dd><p>
101[INTERN] file ops related flags including busy flag.
102      </p></dd><dt><span class="term">debugfs_dentry</span></dt><dd><p>
103[INTERN] device specific debugfs dentry.
104      </p></dd><dt><span class="term">cached_reg_addr</span></dt><dd><p>
105[INTERN] cached register address for debugfs reads.
106      </p></dd></dl></div></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="iiosubsys.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="iiosubsys.html#iiodevice">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="API-iio-device-alloc.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Chapter 2. Industrial I/O core </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> <span class="phrase">iio_device_alloc</span></td></tr></table></div></body></html>
107