include/linux/platform_data/voltage-omap.h

   1 /*
   2  * OMAP Voltage Management Routines
   3  *
   4  * Copyright (C) 2011, Texas Instruments, Inc.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 as
   8  * published by the Free Software Foundation.
   9  */
  10
  11 #ifndef __ARCH_ARM_OMAP_VOLTAGE_H
  12 #define __ARCH_ARM_OMAP_VOLTAGE_H
  13
  14 /**
  15  * struct omap_volt_data - Omap voltage specific data.
  16  * @voltage_nominal:    The possible voltage value in uV
  17  * @sr_efuse_offs:      The offset of the efuse register(from system
  18  *                      control module base address) from where to read
  19  *                      the n-target value for the smartreflex module.
  20  * @sr_errminlimit:     Error min limit value for smartreflex. This value
  21  *                      differs at differnet opp and thus is linked
  22  *                      with voltage.
  23  * @vp_errorgain:       Error gain value for the voltage processor. This
  24  *                      field also differs according to the voltage/opp.
  25  */
  26 struct omap_volt_data {
  27         u32     volt_nominal;
  28         u32     sr_efuse_offs;
  29         u8      sr_errminlimit;
  30         u8      vp_errgain;
  31 };
  32 struct voltagedomain;
  33
  34 struct voltagedomain *voltdm_lookup(const char *name);
  35 int voltdm_scale(struct voltagedomain *voltdm, unsigned long target_volt);
  36 unsigned long voltdm_get_voltage(struct voltagedomain *voltdm);
  37 struct omap_volt_data *omap_voltage_get_voltdata(struct voltagedomain *voltdm,
  38                 unsigned long volt);
  39 #endif