1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0-or-later */ 2*4882a593Smuzhiyun /* 3*4882a593Smuzhiyun * max1586.h -- Voltage regulation for the Maxim 1586 4*4882a593Smuzhiyun * 5*4882a593Smuzhiyun * Copyright (C) 2008 Robert Jarzmik 6*4882a593Smuzhiyun */ 7*4882a593Smuzhiyun 8*4882a593Smuzhiyun #ifndef REGULATOR_MAX1586 9*4882a593Smuzhiyun #define REGULATOR_MAX1586 10*4882a593Smuzhiyun 11*4882a593Smuzhiyun #include <linux/regulator/machine.h> 12*4882a593Smuzhiyun 13*4882a593Smuzhiyun #define MAX1586_V3 0 14*4882a593Smuzhiyun #define MAX1586_V6 1 15*4882a593Smuzhiyun 16*4882a593Smuzhiyun /* precalculated values for v3_gain */ 17*4882a593Smuzhiyun #define MAX1586_GAIN_NO_R24 1000000 /* 700000 .. 1475000 mV */ 18*4882a593Smuzhiyun #define MAX1586_GAIN_R24_3k32 1051098 /* 735768 .. 1550369 mV */ 19*4882a593Smuzhiyun #define MAX1586_GAIN_R24_5k11 1078648 /* 755053 .. 1591005 mV */ 20*4882a593Smuzhiyun #define MAX1586_GAIN_R24_7k5 1115432 /* 780802 .. 1645262 mV */ 21*4882a593Smuzhiyun 22*4882a593Smuzhiyun /** 23*4882a593Smuzhiyun * max1586_subdev_data - regulator data 24*4882a593Smuzhiyun * @id: regulator Id (either MAX1586_V3 or MAX1586_V6) 25*4882a593Smuzhiyun * @name: regulator cute name (example for V3: "vcc_core") 26*4882a593Smuzhiyun * @platform_data: regulator init data (constraints, supplies, ...) 27*4882a593Smuzhiyun */ 28*4882a593Smuzhiyun struct max1586_subdev_data { 29*4882a593Smuzhiyun int id; 30*4882a593Smuzhiyun const char *name; 31*4882a593Smuzhiyun struct regulator_init_data *platform_data; 32*4882a593Smuzhiyun }; 33*4882a593Smuzhiyun 34*4882a593Smuzhiyun /** 35*4882a593Smuzhiyun * max1586_platform_data - platform data for max1586 36*4882a593Smuzhiyun * @num_subdevs: number of regulators used (may be 1 or 2) 37*4882a593Smuzhiyun * @subdevs: regulator used 38*4882a593Smuzhiyun * At most, there will be a regulator for V3 and one for V6 voltages. 39*4882a593Smuzhiyun * @v3_gain: gain on the V3 voltage output multiplied by 1e6. 40*4882a593Smuzhiyun * This can be calculated as ((1 + R24/R25 + R24/185.5kOhm) * 1e6) 41*4882a593Smuzhiyun * for an external resistor configuration as described in the 42*4882a593Smuzhiyun * data sheet (R25=100kOhm). 43*4882a593Smuzhiyun */ 44*4882a593Smuzhiyun struct max1586_platform_data { 45*4882a593Smuzhiyun int num_subdevs; 46*4882a593Smuzhiyun struct max1586_subdev_data *subdevs; 47*4882a593Smuzhiyun int v3_gain; 48*4882a593Smuzhiyun }; 49*4882a593Smuzhiyun 50*4882a593Smuzhiyun #endif 51