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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 | |
1d892719 | 21 | * @l: list head for maintaining list of dynamically created attrs. |
847ec80b JC |
22 | */ |
23 | struct iio_dev_attr { | |
24 | struct device_attribute dev_attr; | |
e614a54b | 25 | u64 address; |
1d892719 JC |
26 | struct list_head l; |
27 | struct iio_chan_spec const *c; | |
847ec80b JC |
28 | }; |
29 | ||
30 | #define to_iio_dev_attr(_dev_attr) \ | |
31 | container_of(_dev_attr, struct iio_dev_attr, dev_attr) | |
32 | ||
33 | ssize_t iio_read_const_attr(struct device *dev, | |
34 | struct device_attribute *attr, | |
35 | char *len); | |
36 | ||
37 | /** | |
38 | * struct iio_const_attr - constant device specific attribute | |
39 | * often used for things like available modes | |
4c572605 RD |
40 | * @string: attribute string |
41 | * @dev_attr: underlying device attribute | |
847ec80b JC |
42 | */ |
43 | struct iio_const_attr { | |
44 | const char *string; | |
45 | struct device_attribute dev_attr; | |
46 | }; | |
47 | ||
48 | #define to_iio_const_attr(_dev_attr) \ | |
49 | container_of(_dev_attr, struct iio_const_attr, dev_attr) | |
50 | ||
4c572605 | 51 | /* Some attributes will be hard coded (device dependent) and not require an |
847ec80b JC |
52 | address, in these cases pass a negative */ |
53 | #define IIO_ATTR(_name, _mode, _show, _store, _addr) \ | |
54 | { .dev_attr = __ATTR(_name, _mode, _show, _store), \ | |
55 | .address = _addr } | |
56 | ||
847ec80b JC |
57 | #define IIO_DEVICE_ATTR(_name, _mode, _show, _store, _addr) \ |
58 | struct iio_dev_attr iio_dev_attr_##_name \ | |
59 | = IIO_ATTR(_name, _mode, _show, _store, _addr) | |
60 | ||
ad313b10 JC |
61 | #define IIO_DEVICE_ATTR_NAMED(_vname, _name, _mode, _show, _store, _addr) \ |
62 | struct iio_dev_attr iio_dev_attr_##_vname \ | |
63 | = IIO_ATTR(_name, _mode, _show, _store, _addr) | |
847ec80b | 64 | |
847ec80b JC |
65 | #define IIO_CONST_ATTR(_name, _string) \ |
66 | struct iio_const_attr iio_const_attr_##_name \ | |
67 | = { .string = _string, \ | |
68 | .dev_attr = __ATTR(_name, S_IRUGO, iio_read_const_attr, NULL)} | |
69 | ||
fc5d0e42 JC |
70 | #define IIO_CONST_ATTR_NAMED(_vname, _name, _string) \ |
71 | struct iio_const_attr iio_const_attr_##_vname \ | |
72 | = { .string = _string, \ | |
73 | .dev_attr = __ATTR(_name, S_IRUGO, iio_read_const_attr, NULL)} | |
4c572605 | 74 | |
355e25c1 | 75 | /* Generic attributes of onetype or another */ |
4f0cd86d BS |
76 | /** |
77 | * IIO_DEV_ATTR_RESET: resets the device | |
78 | **/ | |
79 | #define IIO_DEV_ATTR_RESET(_store) \ | |
983bbfd0 | 80 | IIO_DEVICE_ATTR(reset, S_IWUSR, NULL, _store, 0) |
4f0cd86d | 81 | |
847ec80b | 82 | /** |
4c572605 RD |
83 | * IIO_DEV_ATTR_SAMP_FREQ - sets any internal clock frequency |
84 | * @_mode: sysfs file mode/permissions | |
85 | * @_show: output method for the attribute | |
86 | * @_store: input method for the attribute | |
847ec80b JC |
87 | **/ |
88 | #define IIO_DEV_ATTR_SAMP_FREQ(_mode, _show, _store) \ | |
89 | IIO_DEVICE_ATTR(sampling_frequency, _mode, _show, _store, 0) | |
90 | ||
91 | /** | |
355e25c1 | 92 | * IIO_DEV_ATTR_SAMP_FREQ_AVAIL - list available sampling frequencies |
4c572605 | 93 | * @_show: output method for the attribute |
847ec80b | 94 | * |
4c572605 | 95 | * May be mode dependent on some devices |
847ec80b | 96 | **/ |
ff7723e2 JC |
97 | #define IIO_DEV_ATTR_SAMP_FREQ_AVAIL(_show) \ |
98 | IIO_DEVICE_ATTR(sampling_frequency_available, S_IRUGO, _show, NULL, 0) | |
847ec80b | 99 | /** |
b90406f1 | 100 | * IIO_CONST_ATTR_SAMP_FREQ_AVAIL - list available sampling frequencies |
4c572605 | 101 | * @_string: frequency string for the attribute |
847ec80b JC |
102 | * |
103 | * Constant version | |
104 | **/ | |
ff7723e2 JC |
105 | #define IIO_CONST_ATTR_SAMP_FREQ_AVAIL(_string) \ |
106 | IIO_CONST_ATTR(sampling_frequency_available, _string) | |
107 | ||
ff7723e2 | 108 | #define IIO_DEV_ATTR_TEMP_RAW(_show) \ |
322c9563 | 109 | IIO_DEVICE_ATTR(in_temp_raw, S_IRUGO, _show, NULL, 0) |
ff7723e2 | 110 | |
51a0a5b0 | 111 | #define IIO_CONST_ATTR_TEMP_OFFSET(_string) \ |
322c9563 | 112 | IIO_CONST_ATTR(in_temp_offset, _string) |
51a0a5b0 MS |
113 | |
114 | #define IIO_CONST_ATTR_TEMP_SCALE(_string) \ | |
322c9563 | 115 | IIO_CONST_ATTR(in_temp_scale, _string) |
51a0a5b0 | 116 | |
847ec80b | 117 | #endif /* _INDUSTRIAL_IO_SYSFS_H_ */ |