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83d290c5 | 1 | // SPDX-License-Identifier: GPL-2.0+ |
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2 | /* |
3 | * (C) Copyright 2016 | |
4 | * Jelle van der Waa <jelle@vdwaa.nl> | |
0d8382ae JW |
5 | */ |
6 | #include <common.h> | |
7 | #include <i2c.h> | |
8 | #include <sy8106a.h> | |
9 | ||
10 | #define SY8106A_I2C_ADDR 0x65 | |
11 | #define SY8106A_VOUT1_SEL 1 | |
12 | #define SY8106A_VOUT1_SEL_ENABLE (1 << 7) | |
13 | ||
ae4e4dde | 14 | #ifdef CONFIG_SPL_BUILD |
0d8382ae JW |
15 | static u8 sy8106a_mvolt_to_cfg(int mvolt, int min, int max, int div) |
16 | { | |
17 | if (mvolt < min) | |
18 | mvolt = min; | |
19 | else if (mvolt > max) | |
20 | mvolt = max; | |
21 | ||
22 | return (mvolt - min) / div; | |
23 | } | |
24 | ||
25 | int sy8106a_set_vout1(unsigned int mvolt) | |
26 | { | |
27 | u8 data = sy8106a_mvolt_to_cfg(mvolt, 680, 1950, 10) | SY8106A_VOUT1_SEL_ENABLE; | |
28 | return i2c_write(SY8106A_I2C_ADDR, SY8106A_VOUT1_SEL, 1, &data, 1); | |
29 | } | |
ae4e4dde | 30 | #endif |