include/linux/regulator/max1586.h

   1 /*
   2  * max1586.h  --  Voltage regulation for the Maxim 1586
   3  *
   4  * Copyright (C) 2008 Robert Jarzmik
   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 as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #ifndef REGULATOR_MAX1586
  22 #define REGULATOR_MAX1586
  23
  24 #include <linux/regulator/machine.h>
  25
  26 #define MAX1586_V3 0
  27 #define MAX1586_V6 1
  28
  29 /* precalculated values for v3_gain */
  30 #define MAX1586_GAIN_NO_R24   1000000  /* 700000 .. 1475000 mV */
  31 #define MAX1586_GAIN_R24_3k32 1051098  /* 735768 .. 1550369 mV */
  32 #define MAX1586_GAIN_R24_5k11 1078648  /* 755053 .. 1591005 mV */
  33 #define MAX1586_GAIN_R24_7k5  1115432  /* 780802 .. 1645262 mV */
  34
  35 /**
  36  * max1586_subdev_data - regulator data
  37  * @id: regulator Id (either MAX1586_V3 or MAX1586_V6)
  38  * @name: regulator cute name (example for V3: "vcc_core")
  39  * @platform_data: regulator init data (constraints, supplies, ...)
  40  */
  41 struct max1586_subdev_data {
  42         int                             id;
  43         const char                      *name;
  44         struct regulator_init_data      *platform_data;
  45 };
  46
  47 /**
  48  * max1586_platform_data - platform data for max1586
  49  * @num_subdevs: number of regulators used (may be 1 or 2)
  50  * @subdevs: regulator used
  51  *           At most, there will be a regulator for V3 and one for V6 voltages.
  52  * @v3_gain: gain on the V3 voltage output multiplied by 1e6.
  53  *           This can be calculated as ((1 + R24/R25 + R24/185.5kOhm) * 1e6)
  54  *           for an external resistor configuration as described in the
  55  *           data sheet (R25=100kOhm).
  56  */
  57 struct max1586_platform_data {
  58         int num_subdevs;
  59         struct max1586_subdev_data *subdevs;
  60         int v3_gain;
  61 };
  62
  63 #endif