/*
* max1586.h -- Voltage regulation for the Maxim 1586
*
* Copyright (C) 2008 Robert Jarzmik
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/

#ifndef REGULATOR_MAX1586
#define REGULATOR_MAX1586

#include <linux/regulator/machine.h>

#define MAX1586_V3 0
#define MAX1586_V6 1

/* precalculated values for v3_gain */
#define MAX1586_GAIN_NO_R24 1000000 /* 700000 .. 1475000 mV */
#define MAX1586_GAIN_R24_3k32 1051098 /* 735768 .. 1550369 mV */
#define MAX1586_GAIN_R24_5k11 1078648 /* 755053 .. 1591005 mV */
#define MAX1586_GAIN_R24_7k5 1115432 /* 780802 .. 1645262 mV */

/**
* max1586_subdev_data - regulator data
* @id: regulator Id (either MAX1586_V3 or MAX1586_V6)
* @name: regulator cute name (example for V3: "vcc_core")
* @platform_data: regulator init data (constraints, supplies, ...)
*/
struct max1586_subdev_data {
int id;
char *name;
struct regulator_init_data *platform_data;
};

/**
* max1586_platform_data - platform data for max1586
* @num_subdevs: number of regulators used (may be 1 or 2)
* @subdevs: regulator used
* At most, there will be a regulator for V3 and one for V6 voltages.
* @v3_gain: gain on the V3 voltage output multiplied by 1e6.
* This can be calculated as ((1 + R24/R25 + R24/185.5kOhm) * 1e6)
* for an external resistor configuration as described in the
* data sheet (R25=100kOhm).
*/
struct max1586_platform_data {
int num_subdevs;
struct max1586_subdev_data *subdevs;
int v3_gain;
};

#endif