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1a59d1b8 | 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
55f4fa4e RJ |
2 | /* |
3 | * max1586.h -- Voltage regulation for the Maxim 1586 | |
4 | * | |
5 | * Copyright (C) 2008 Robert Jarzmik | |
55f4fa4e RJ |
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 | ||
b110a8fb PZ |
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 | ||
55f4fa4e RJ |
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") | |
2e7e65ce | 26 | * @platform_data: regulator init data (constraints, supplies, ...) |
55f4fa4e RJ |
27 | */ |
28 | struct max1586_subdev_data { | |
29 | int id; | |
4e005179 | 30 | const char *name; |
55f4fa4e RJ |
31 | struct regulator_init_data *platform_data; |
32 | }; | |
33 | ||
34 | /** | |
35 | * max1586_platform_data - platform data for max1586 | |
2e7e65ce | 36 | * @num_subdevs: number of regulators used (may be 1 or 2) |
55f4fa4e RJ |
37 | * @subdevs: regulator used |
38 | * At most, there will be a regulator for V3 and one for V6 voltages. | |
b110a8fb PZ |
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). | |
55f4fa4e RJ |
43 | */ |
44 | struct max1586_platform_data { | |
45 | int num_subdevs; | |
46 | struct max1586_subdev_data *subdevs; | |
b110a8fb | 47 | int v3_gain; |
55f4fa4e RJ |
48 | }; |
49 | ||
50 | #endif |