1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * (C) Copyright 2016
4 * Jelle van der Waa <jelle@vdwaa.nl>
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
14 #ifdef CONFIG_SPL_BUILD
sy8106a_mvolt_to_cfg(int mvolt,int min,int max,int div)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
sy8106a_set_vout1(unsigned int mvolt)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 }
30 #endif
31