include/linux/platform_data/hwmon-s3c.h

   1 /*
   2  * Copyright 2005 Simtec Electronics
   3  *      Ben Dooks <ben@simtec.co.uk>
   4  *      http://armlinux.simtec.co.uk/
   5  *
   6  * S3C - HWMon interface for ADC
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 as
  10  * published by the Free Software Foundation.
  11 */
  12
  13 #ifndef __HWMON_S3C_H__
  14 #define __HWMON_S3C_H__
  15
  16 /**
  17  * s3c_hwmon_chcfg - channel configuration
  18  * @name: The name to give this channel.
  19  * @mult: Multiply the ADC value read by this.
  20  * @div: Divide the value from the ADC by this.
  21  *
  22  * The value read from the ADC is converted to a value that
  23  * hwmon expects (mV) by result = (value_read * @mult) / @div.
  24  */
  25 struct s3c_hwmon_chcfg {
  26         const char      *name;
  27         unsigned int    mult;
  28         unsigned int    div;
  29 };
  30
  31 /**
  32  * s3c_hwmon_pdata - HWMON platform data
  33  * @in: One configuration for each possible channel used.
  34  */
  35 struct s3c_hwmon_pdata {
  36         struct s3c_hwmon_chcfg  *in[8];
  37 };
  38
  39 /**
  40  * s3c_hwmon_set_platdata - Set platform data for S3C HWMON device
  41  * @pd: Platform data to register to device.
  42  *
  43  * Register the given platform data for use with the S3C HWMON device.
  44  * The call will copy the platform data, so the board definitions can
  45  * make the structure itself __initdata.
  46  */
  47 extern void __init s3c_hwmon_set_platdata(struct s3c_hwmon_pdata *pd);
  48
  49 #endif /* __HWMON_S3C_H__ */