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