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1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
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2 | /* |
3 | * Copyright 2005 Simtec Electronics |
4 | * Ben Dooks <ben@simtec.co.uk> |
5 | * http://armlinux.simtec.co.uk/ |
6 | * |
7 | * S3C - HWMon interface for ADC |
8 | */ |
9 | |
10 | #ifndef __HWMON_S3C_H__ |
11 | #define __HWMON_S3C_H__ |
12 | |
13 | /** |
14 | * s3c_hwmon_chcfg - channel configuration |
15 | * @name: The name to give this channel. |
16 | * @mult: Multiply the ADC value read by this. |
17 | * @div: Divide the value from the ADC by this. |
18 | * |
19 | * The value read from the ADC is converted to a value that |
20 | * hwmon expects (mV) by result = (value_read * @mult) / @div. |
21 | */ |
22 | struct s3c_hwmon_chcfg { |
23 | const char *name; |
24 | unsigned int mult; |
25 | unsigned int div; |
26 | }; |
27 | |
28 | /** |
29 | * s3c_hwmon_pdata - HWMON platform data |
30 | * @in: One configuration for each possible channel used. |
31 | */ |
32 | struct s3c_hwmon_pdata { |
33 | struct s3c_hwmon_chcfg *in[8]; |
34 | }; |
35 | |
36 | /** |
37 | * s3c_hwmon_set_platdata - Set platform data for S3C HWMON device |
38 | * @pd: Platform data to register to device. |
39 | * |
40 | * Register the given platform data for use with the S3C HWMON device. |
41 | * The call will copy the platform data, so the board definitions can |
42 | * make the structure itself __initdata. |
43 | */ |
44 | extern void __init s3c_hwmon_set_platdata(struct s3c_hwmon_pdata *pd); |
45 | |
46 | #endif /* __HWMON_S3C_H__ */ |
47 |
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