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847ec80b JC |
1 | /* The industrial I/O core |
2 | * | |
3 | *Copyright (c) 2008 Jonathan Cameron | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or modify it | |
6 | * under the terms of the GNU General Public License version 2 as published by | |
7 | * the Free Software Foundation. | |
8 | * | |
9 | * General attributes | |
10 | */ | |
11 | ||
12 | #ifndef _INDUSTRIAL_IO_SYSFS_H_ | |
13 | #define _INDUSTRIAL_IO_SYSFS_H_ | |
14 | ||
4bfd5421 | 15 | struct iio_chan_spec; |
847ec80b | 16 | |
847ec80b JC |
17 | /** |
18 | * struct iio_dev_attr - iio specific device attribute | |
19 | * @dev_attr: underlying device attribute | |
20 | * @address: associated register address | |
2854c098 CO |
21 | * @l: list head for maintaining list of dynamically created attrs |
22 | * @c: specification for the underlying channel | |
847ec80b JC |
23 | */ |
24 | struct iio_dev_attr { | |
25 | struct device_attribute dev_attr; | |
e614a54b | 26 | u64 address; |
1d892719 JC |
27 | struct list_head l; |
28 | struct iio_chan_spec const *c; | |
847ec80b JC |
29 | }; |
30 | ||
31 | #define to_iio_dev_attr(_dev_attr) \ | |
32 | container_of(_dev_attr, struct iio_dev_attr, dev_attr) | |
33 | ||
34 | ssize_t iio_read_const_attr(struct device *dev, | |
35 | struct device_attribute *attr, | |
36 | char *len); | |
37 | ||
38 | /** | |
39 | * struct iio_const_attr - constant device specific attribute | |
40 | * often used for things like available modes | |
4c572605 RD |
41 | * @string: attribute string |
42 | * @dev_attr: underlying device attribute | |
847ec80b JC |
43 | */ |
44 | struct iio_const_attr { | |
45 | const char *string; | |
46 | struct device_attribute dev_attr; | |
47 | }; | |
48 | ||
49 | #define to_iio_const_attr(_dev_attr) \ | |
50 | container_of(_dev_attr, struct iio_const_attr, dev_attr) | |
51 | ||
4c572605 | 52 | /* Some attributes will be hard coded (device dependent) and not require an |
847ec80b JC |
53 | address, in these cases pass a negative */ |
54 | #define IIO_ATTR(_name, _mode, _show, _store, _addr) \ | |
55 | { .dev_attr = __ATTR(_name, _mode, _show, _store), \ | |
56 | .address = _addr } | |
57 | ||
847ec80b JC |
58 | #define IIO_DEVICE_ATTR(_name, _mode, _show, _store, _addr) \ |
59 | struct iio_dev_attr iio_dev_attr_##_name \ | |
60 | = IIO_ATTR(_name, _mode, _show, _store, _addr) | |
61 | ||
ad313b10 JC |
62 | #define IIO_DEVICE_ATTR_NAMED(_vname, _name, _mode, _show, _store, _addr) \ |
63 | struct iio_dev_attr iio_dev_attr_##_vname \ | |
64 | = IIO_ATTR(_name, _mode, _show, _store, _addr) | |
847ec80b | 65 | |
847ec80b JC |
66 | #define IIO_CONST_ATTR(_name, _string) \ |
67 | struct iio_const_attr iio_const_attr_##_name \ | |
68 | = { .string = _string, \ | |
69 | .dev_attr = __ATTR(_name, S_IRUGO, iio_read_const_attr, NULL)} | |
70 | ||
fc5d0e42 JC |
71 | #define IIO_CONST_ATTR_NAMED(_vname, _name, _string) \ |
72 | struct iio_const_attr iio_const_attr_##_vname \ | |
73 | = { .string = _string, \ | |
74 | .dev_attr = __ATTR(_name, S_IRUGO, iio_read_const_attr, NULL)} | |
4c572605 | 75 | |
355e25c1 | 76 | /* Generic attributes of onetype or another */ |
4f0cd86d | 77 | |
847ec80b | 78 | /** |
4c572605 RD |
79 | * IIO_DEV_ATTR_SAMP_FREQ - sets any internal clock frequency |
80 | * @_mode: sysfs file mode/permissions | |
81 | * @_show: output method for the attribute | |
82 | * @_store: input method for the attribute | |
847ec80b JC |
83 | **/ |
84 | #define IIO_DEV_ATTR_SAMP_FREQ(_mode, _show, _store) \ | |
85 | IIO_DEVICE_ATTR(sampling_frequency, _mode, _show, _store, 0) | |
86 | ||
87 | /** | |
355e25c1 | 88 | * IIO_DEV_ATTR_SAMP_FREQ_AVAIL - list available sampling frequencies |
4c572605 | 89 | * @_show: output method for the attribute |
847ec80b | 90 | * |
4c572605 | 91 | * May be mode dependent on some devices |
847ec80b | 92 | **/ |
ff7723e2 JC |
93 | #define IIO_DEV_ATTR_SAMP_FREQ_AVAIL(_show) \ |
94 | IIO_DEVICE_ATTR(sampling_frequency_available, S_IRUGO, _show, NULL, 0) | |
847ec80b | 95 | /** |
b90406f1 | 96 | * IIO_CONST_ATTR_SAMP_FREQ_AVAIL - list available sampling frequencies |
4c572605 | 97 | * @_string: frequency string for the attribute |
847ec80b JC |
98 | * |
99 | * Constant version | |
100 | **/ | |
ff7723e2 JC |
101 | #define IIO_CONST_ATTR_SAMP_FREQ_AVAIL(_string) \ |
102 | IIO_CONST_ATTR(sampling_frequency_available, _string) | |
103 | ||
899d90bd PM |
104 | /** |
105 | * IIO_DEV_ATTR_INT_TIME_AVAIL - list available integration times | |
106 | * @_show: output method for the attribute | |
107 | **/ | |
108 | #define IIO_DEV_ATTR_INT_TIME_AVAIL(_show) \ | |
109 | IIO_DEVICE_ATTR(integration_time_available, S_IRUGO, _show, NULL, 0) | |
110 | /** | |
111 | * IIO_CONST_ATTR_INT_TIME_AVAIL - list available integration times | |
112 | * @_string: frequency string for the attribute | |
113 | * | |
114 | * Constant version | |
115 | **/ | |
116 | #define IIO_CONST_ATTR_INT_TIME_AVAIL(_string) \ | |
117 | IIO_CONST_ATTR(integration_time_available, _string) | |
118 | ||
ff7723e2 | 119 | #define IIO_DEV_ATTR_TEMP_RAW(_show) \ |
322c9563 | 120 | IIO_DEVICE_ATTR(in_temp_raw, S_IRUGO, _show, NULL, 0) |
ff7723e2 | 121 | |
51a0a5b0 | 122 | #define IIO_CONST_ATTR_TEMP_OFFSET(_string) \ |
322c9563 | 123 | IIO_CONST_ATTR(in_temp_offset, _string) |
51a0a5b0 MS |
124 | |
125 | #define IIO_CONST_ATTR_TEMP_SCALE(_string) \ | |
322c9563 | 126 | IIO_CONST_ATTR(in_temp_scale, _string) |
51a0a5b0 | 127 | |
847ec80b | 128 | #endif /* _INDUSTRIAL_IO_SYSFS_H_ */ |