release/src-rt-6.x.4708/linux/linux-2.6.36/arch/arm/plat-samsung/include/plat/hwmon.h

   1 /* linux/arch/arm/plat-s3c/include/plat/hwmon.h
   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  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License version 2 as
  11  * published by the Free Software Foundation.
  12 */
  13
  14 #ifndef __ASM_ARCH_ADC_HWMON_H
  15 #define __ASM_ARCH_ADC_HWMON_H __FILE__
  16
  17 /**
  18  * s3c_hwmon_chcfg - channel configuration
  19  * @name: The name to give this channel.
  20  * @mult: Multiply the ADC value read by this.
  21  * @div: Divide the value from the ADC by this.
  22  *
  23  * The value read from the ADC is converted to a value that
  24  * hwmon expects (mV) by result = (value_read * @mult) / @div.
  25  */
  26 struct s3c_hwmon_chcfg {
  27         const char      *name;
  28         unsigned int    mult;
  29         unsigned int    div;
  30 };
  31
  32 /**
  33  * s3c_hwmon_pdata - HWMON platform data
  34  * @in: One configuration for each possible channel used.
  35  */
  36 struct s3c_hwmon_pdata {
  37         struct s3c_hwmon_chcfg  *in[8];
  38 };
  39
  40 /**
  41  * s3c_hwmon_set_platdata - Set platform data for S3C HWMON device
  42  * @pd: Platform data to register to device.
  43  *
  44  * Register the given platform data for use with the S3C HWMON device.
  45  * The call will copy the platform data, so the board definitions can
  46  * make the structure itself __initdata.
  47  */
  48 extern void __init s3c_hwmon_set_platdata(struct s3c_hwmon_pdata *pd);
  49
  50 #endif /* __ASM_ARCH_ADC_HWMON_H */