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 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 } 30 #endif 31