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 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 64