1*4882a593Smuzhiyun /* 2*4882a593Smuzhiyun * (C) Copyright 2014 Texas Instruments Incorporated - http://www.ti.com 3*4882a593Smuzhiyun * Author: Felipe Balbi <balbi@ti.com> 4*4882a593Smuzhiyun * 5*4882a593Smuzhiyun * SPDX-License-Identifier: GPL-2.0+ 6*4882a593Smuzhiyun */ 7*4882a593Smuzhiyun 8*4882a593Smuzhiyun #include <common.h> 9*4882a593Smuzhiyun #include <i2c.h> 10*4882a593Smuzhiyun #include <linux/errno.h> 11*4882a593Smuzhiyun #include <power/pmic.h> 12*4882a593Smuzhiyun #include <power/tps62362.h> 13*4882a593Smuzhiyun 14*4882a593Smuzhiyun /** 15*4882a593Smuzhiyun * tps62362_voltage_update() - Function to change a voltage level, as this 16*4882a593Smuzhiyun * is a multi-step process. 17*4882a593Smuzhiyun * @reg: Register address to write to 18*4882a593Smuzhiyun * @volt_sel: Voltage register value to write 19*4882a593Smuzhiyun * @return: 0 on success, 1 on failure 20*4882a593Smuzhiyun */ tps62362_voltage_update(unsigned char reg,unsigned char volt_sel)21*4882a593Smuzhiyunint tps62362_voltage_update(unsigned char reg, unsigned char volt_sel) 22*4882a593Smuzhiyun { 23*4882a593Smuzhiyun if (reg > TPS62362_NUM_REGS) 24*4882a593Smuzhiyun return 1; 25*4882a593Smuzhiyun 26*4882a593Smuzhiyun return i2c_write(TPS62362_I2C_ADDR, reg, 1, &volt_sel, 1); 27*4882a593Smuzhiyun } 28*4882a593Smuzhiyun power_tps62362_init(unsigned char bus)29*4882a593Smuzhiyunint power_tps62362_init(unsigned char bus) 30*4882a593Smuzhiyun { 31*4882a593Smuzhiyun static const char name[] = "TPS62362"; 32*4882a593Smuzhiyun struct pmic *p = pmic_alloc(); 33*4882a593Smuzhiyun 34*4882a593Smuzhiyun if (!p) { 35*4882a593Smuzhiyun printf("%s: POWER allocation error!\n", __func__); 36*4882a593Smuzhiyun return -ENOMEM; 37*4882a593Smuzhiyun } 38*4882a593Smuzhiyun 39*4882a593Smuzhiyun p->name = name; 40*4882a593Smuzhiyun p->interface = PMIC_I2C; 41*4882a593Smuzhiyun p->number_of_regs = TPS62362_NUM_REGS; 42*4882a593Smuzhiyun p->hw.i2c.addr = TPS62362_I2C_ADDR; 43*4882a593Smuzhiyun p->hw.i2c.tx_num = 1; 44*4882a593Smuzhiyun p->bus = bus; 45*4882a593Smuzhiyun 46*4882a593Smuzhiyun return 0; 47*4882a593Smuzhiyun } 48